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739 vulnerabilities found for Junos OS by Juniper Networks
CERTFR-2026-AVI-0416
Vulnerability from certfr_avis
Une vulnérabilité a été découverte dans les produits Juniper Networks. Elle permet à un attaquant de provoquer une élévation de privilèges.
Solutions
Se référer au bulletin de sécurité de l'éditeur pour l'obtention des correctifs (cf. section Documentation).
Impacted products
| Vendor | Product | Description | ||
|---|---|---|---|---|
| Juniper Networks | Junos OS Evolved | Junos OS Evolved versions 23.4 antérieures à 23.4R2-S6-EVO | ||
| Juniper Networks | Junos OS | Junos OS versions 24.2R2 antérieures à 24.2R2, | ||
| Juniper Networks | Junos OS | Junos OS versions 25.2 antérieures à 25.2R1 | ||
| Juniper Networks | Junos OS Evolved | Junos OS Evolved versions 24.4R1 antérieures à 24.4R1-S1-EVO | ||
| Juniper Networks | Junos OS | Junos OS versions 23.4R2 antérieures à 23.4R2-S6 | ||
| Juniper Networks | Junos OS Evolved | Junos OS Evolved versions 24.4R2 antérieures à 24.4R2-EVO | ||
| Juniper Networks | Junos OS | Junos OS versions 24.2R1 antérieures à 24.2R1-S2 | ||
| Juniper Networks | Junos OS Evolved | Junos OS Evolved versions 25.2 antérieures à 25.2R1-EVO | ||
| Juniper Networks | Junos OS Evolved | Junos OS Evolved versions antérieures à 22.4R3-S7-EVO | ||
| Juniper Networks | Junos OS | Junos OS versions 23.2R2 antérieures à 23.2R2-S4 | ||
| Juniper Networks | Junos OS | Junos OS versions 24.4R1 antérieures à 24.4R1-S2 ou 24.4R2 | ||
| Juniper Networks | Junos OS Evolved | Junos OS Evolved versions 23.2 antérieures à 23.2R2-S4-EVO | ||
| Juniper Networks | Junos OS | Junos OS versions antérieures à 22.4R3-S7 | ||
| Juniper Networks | Junos OS Evolved | Junos OS Evolved versions 24.2 antérieures à 24.2R2-EVO |
References
| Title | Publication Time | Tags | |||
|---|---|---|---|---|---|
|
|||||
{
"$ref": "https://www.cert.ssi.gouv.fr/openapi.json",
"affected_systems": [
{
"description": "Junos OS Evolved versions 23.4 ant\u00e9rieures \u00e0 23.4R2-S6-EVO",
"product": {
"name": "Junos OS Evolved",
"vendor": {
"name": "Juniper Networks",
"scada": false
}
}
},
{
"description": "Junos OS versions 24.2R2 ant\u00e9rieures \u00e0 24.2R2, ",
"product": {
"name": "Junos OS",
"vendor": {
"name": "Juniper Networks",
"scada": false
}
}
},
{
"description": "Junos OS versions 25.2 ant\u00e9rieures \u00e0 25.2R1",
"product": {
"name": "Junos OS",
"vendor": {
"name": "Juniper Networks",
"scada": false
}
}
},
{
"description": "Junos OS Evolved versions 24.4R1 ant\u00e9rieures \u00e0 24.4R1-S1-EVO",
"product": {
"name": "Junos OS Evolved",
"vendor": {
"name": "Juniper Networks",
"scada": false
}
}
},
{
"description": "Junos OS versions 23.4R2 ant\u00e9rieures \u00e0 23.4R2-S6",
"product": {
"name": "Junos OS",
"vendor": {
"name": "Juniper Networks",
"scada": false
}
}
},
{
"description": "Junos OS Evolved versions 24.4R2 ant\u00e9rieures \u00e0 24.4R2-EVO",
"product": {
"name": "Junos OS Evolved",
"vendor": {
"name": "Juniper Networks",
"scada": false
}
}
},
{
"description": "Junos OS versions 24.2R1 ant\u00e9rieures \u00e0 24.2R1-S2 ",
"product": {
"name": "Junos OS",
"vendor": {
"name": "Juniper Networks",
"scada": false
}
}
},
{
"description": "Junos OS Evolved versions 25.2 ant\u00e9rieures \u00e0 25.2R1-EVO",
"product": {
"name": "Junos OS Evolved",
"vendor": {
"name": "Juniper Networks",
"scada": false
}
}
},
{
"description": "Junos OS Evolved versions ant\u00e9rieures \u00e0 22.4R3-S7-EVO",
"product": {
"name": "Junos OS Evolved",
"vendor": {
"name": "Juniper Networks",
"scada": false
}
}
},
{
"description": "Junos OS versions 23.2R2 ant\u00e9rieures \u00e0 23.2R2-S4",
"product": {
"name": "Junos OS",
"vendor": {
"name": "Juniper Networks",
"scada": false
}
}
},
{
"description": "Junos OS versions 24.4R1 ant\u00e9rieures \u00e0 24.4R1-S2 ou 24.4R2",
"product": {
"name": "Junos OS",
"vendor": {
"name": "Juniper Networks",
"scada": false
}
}
},
{
"description": "Junos OS Evolved versions 23.2 ant\u00e9rieures \u00e0 23.2R2-S4-EVO ",
"product": {
"name": "Junos OS Evolved",
"vendor": {
"name": "Juniper Networks",
"scada": false
}
}
},
{
"description": "Junos OS versions ant\u00e9rieures \u00e0 22.4R3-S7",
"product": {
"name": "Junos OS",
"vendor": {
"name": "Juniper Networks",
"scada": false
}
}
},
{
"description": "Junos OS Evolved versions 24.2 ant\u00e9rieures \u00e0 24.2R2-EVO",
"product": {
"name": "Junos OS Evolved",
"vendor": {
"name": "Juniper Networks",
"scada": false
}
}
}
],
"affected_systems_content": "",
"content": "## Solutions\n\nSe r\u00e9f\u00e9rer au bulletin de s\u00e9curit\u00e9 de l\u0027\u00e9diteur pour l\u0027obtention des correctifs (cf. section Documentation).",
"cves": [
{
"name": "CVE-2026-33793",
"url": "https://www.cve.org/CVERecord?id=CVE-2026-33793"
}
],
"initial_release_date": "2026-04-10T00:00:00",
"last_revision_date": "2026-04-10T00:00:00",
"links": [],
"reference": "CERTFR-2026-AVI-0416",
"revisions": [
{
"description": "Version initiale",
"revision_date": "2026-04-10T00:00:00.000000"
}
],
"risks": [
{
"description": "\u00c9l\u00e9vation de privil\u00e8ges"
}
],
"summary": "Une vuln\u00e9rabilit\u00e9 a \u00e9t\u00e9 d\u00e9couverte dans les produits Juniper Networks. Elle permet \u00e0 un attaquant de provoquer une \u00e9l\u00e9vation de privil\u00e8ges.",
"title": "Vuln\u00e9rabilit\u00e9 dans les produits Juniper Networks",
"vendor_advisories": [
{
"published_at": "2026-04-09",
"title": "Bulletin de s\u00e9curit\u00e9 Juniper Networks CVE-2026-33793",
"url": "https://supportportal.juniper.net/s/article/2026-04-Security-Bulletin-Junos-OS-and-Junos-OS-Evolved-When-an-unsigned-Python-op-script-configuration-is-present-a-local-low-privileged-user-can-compromise-the-system-CVE-2026-33793"
}
]
}
CVE-2026-33791 (GCVE-0-2026-33791)
Vulnerability from cvelistv5
Published
2026-04-09 21:38
Modified
2026-04-14 03:55
Severity ?
VLAI Severity ?
EPSS score ?
CWE
- CWE-78 - Improper Neutralization of Special Elements used in an OS Command ('OS Command Injection')
Summary
An OS Command Injection vulnerability in the CLI processing of Juniper Networks Junos OS and Junos OS Evolved allows a local, high-privileged attacker executing specific, crafted CLI commands to inject arbitrary shell commands as root, leading to a complete compromise of the system.
Certain 'set system' commands, when executed with crafted arguments, are not properly sanitized, allowing for arbitrary shell injection. These shell commands are executed as root, potentially allowing for complete control of the vulnerable system.
This issue affects:
Junos OS:
* all versions before 22.4R3-S8,
* from 23.2 before 23.2R2-S5,
* from 23.4 before 23.4R2-S7,
* from 24.2 before 24.2R2-S2,
* from 24.4 before 24.4R2,
* from 25.2 before 25.2R2;
Junos OS Evolved:
* all versions before 22.4R3-S8-EVO,
* from 23.2 before 23.2R2-S5-EVO,
* from 23.4 before 23.4R2-S7-EVO,
* from 24.2 before 24.2R2-S2-EVO,
* from 24.4 before 24.4R2-EVO,
* from 25.2 before 25.2R1-S1-EVO, 25.2R2-EVO.
References
| URL | Tags | ||||
|---|---|---|---|---|---|
|
|||||
Impacted products
| Vendor | Product | Version | |||||||
|---|---|---|---|---|---|---|---|---|---|
| Juniper Networks | Junos OS |
Version: 0 ≤ Version: 23.2 ≤ Version: 23.4 ≤ Version: 24.2 ≤ Version: 24.4 ≤ Version: 25.2 ≤ |
|||||||
|
|||||||||
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"datePublic": "2026-04-08T16:00:00.000Z",
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"value": "An OS Command Injection vulnerability in the CLI processing of Juniper Networks Junos OS and Junos OS Evolved allows a local, high-privileged attacker executing specific, crafted CLI commands to inject arbitrary shell commands as root, leading to a complete compromise of the system.\u003cbr\u003e\u003cbr\u003eCertain \u0027set system\u0027 commands, when executed with crafted arguments, are not properly sanitized, allowing for arbitrary shell injection. These shell commands are executed as root, potentially allowing for complete control of the vulnerable system.\u003cbr\u003e\u003cp\u003eThis issue affects:\u003c/p\u003e\u003cp\u003eJunos OS:\u0026nbsp;\u003c/p\u003e\u003cp\u003e\u003c/p\u003e\u003cul\u003e\u003cli\u003eall versions before 22.4R3-S8,\u0026nbsp;\u003c/li\u003e\u003cli\u003efrom 23.2 before 23.2R2-S5,\u0026nbsp;\u003c/li\u003e\u003cli\u003efrom 23.4 before 23.4R2-S7,\u0026nbsp;\u003c/li\u003e\u003cli\u003efrom 24.2 before 24.2R2-S2,\u0026nbsp;\u003c/li\u003e\u003cli\u003efrom 24.4 before 24.4R2,\u0026nbsp;\u003c/li\u003e\u003cli\u003efrom 25.2 before 25.2R2;\u0026nbsp;\u003c/li\u003e\u003c/ul\u003e\u003cp\u003e\u003c/p\u003e\u003cp\u003eJunos OS Evolved:\u0026nbsp;\u003c/p\u003e\u003cp\u003e\u003c/p\u003e\u003cul\u003e\u003cli\u003eall versions before 22.4R3-S8-EVO,\u0026nbsp;\u003c/li\u003e\u003cli\u003efrom 23.2 before 23.2R2-S5-EVO,\u0026nbsp;\u003c/li\u003e\u003cli\u003efrom 23.4 before 23.4R2-S7-EVO,\u0026nbsp;\u003c/li\u003e\u003cli\u003efrom 24.2 before 24.2R2-S2-EVO,\u0026nbsp;\u003c/li\u003e\u003cli\u003efrom 24.4 before 24.4R2-EVO,\u0026nbsp;\u003c/li\u003e\u003cli\u003efrom 25.2 before 25.2R1-S1-EVO, 25.2R2-EVO.\u003c/li\u003e\u003c/ul\u003e\u003cp\u003e\u003c/p\u003e"
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"cvssV3_1": {
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"baseScore": 6.7,
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"confidentialityImpact": "HIGH",
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"privilegesRequired": "HIGH",
"scope": "UNCHANGED",
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"datePublished": "2026-04-09T21:38:52.747Z",
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CVE-2026-33790 (GCVE-0-2026-33790)
Vulnerability from cvelistv5
Published
2026-04-09 21:38
Modified
2026-04-10 13:56
Severity ?
VLAI Severity ?
EPSS score ?
CWE
- CWE-754 - Improper Check for Unusual or Exceptional Conditions
Summary
An Improper Check for Unusual or Exceptional Conditions vulnerability in the flow daemon (flowd) of Juniper Networks Junos OS on SRX Series allows an attacker sending a specific, malformed ICMPv6 packet to cause the srxpfe process to crash and restart. Continued receipt and processing of these packets will repeatedly crash the srxpfe process and sustain the Denial of Service (DoS) condition.
During NAT64 translation, receipt of a specific, malformed ICMPv6 packet destined to the device will cause the srxpfe process to crash and restart.
This issue cannot be triggered using IPv4 nor other IPv6 traffic.
This issue affects Junos OS on SRX Series:
* all versions before 21.2R3-S10,
* all versions of 21.3,
* from 21.4 before 21.4R3-S12,
* all versions of 22.1,
* from 22.2 before 22.2R3-S8,
* all versions of 22.4,
* from 22.4 before 22.4R3-S9,
* from 23.2 before 23.2R2-S6,
* from 23.4 before 23.4R2-S7,
* from 24.2 before 24.2R2-S3,
* from 24.4 before 24.4R2-S3,
* from 25.2 before 25.2R1-S2, 25.2R2.
References
| URL | Tags | ||||
|---|---|---|---|---|---|
|
|||||
Impacted products
| Vendor | Product | Version | ||
|---|---|---|---|---|
| Juniper Networks | Junos OS |
Version: 0 ≤ Version: 21.4 ≤ Version: 22.2 ≤ Version: 22.4 ≤ Version: 23.2 ≤ Version: 23.4 ≤ Version: 24.2 ≤ Version: 24.4 ≤ Version: 25.2 ≤ Version: 21.3 ≤ Version: 22.1 ≤ Version: 22.3 ≤ |
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CVE-2026-33787 (GCVE-0-2026-33787)
Vulnerability from cvelistv5
Published
2026-04-09 21:37
Modified
2026-04-13 18:06
Severity ?
5.5 (Medium) - CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
6.8 (Medium) - CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:L/AU:Y/RE:M
6.8 (Medium) - CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:L/AU:Y/RE:M
VLAI Severity ?
EPSS score ?
CWE
- CWE-754 - Improper Check for Unusual or Exceptional Conditions
Summary
An Improper Check for Unusual or Exceptional Conditions vulnerability in the chassis control daemon (chassisd) of Juniper Networks Junos OS on SRX1500, SRX4100, SRX4200 and SRX4600 allows a local attacker with low privileges to cause a complete Denial of Service (DoS).
When a specific 'show chassis' CLI command is executed, chassisd crashes and restarts which causes a momentary impact to all traffic until all modules are online again.
This issue affects Junos OS on SRX1500, SRX4100, SRX4200 and SRX4600:
* 23.2 versions before 23.2R2-S6,
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* 24.2 versions before 24.2R2-S2,
* 24.4 versions before 24.4R2,
* 25.2 versions before 25.2R1-S1, 25.2R2.
References
| URL | Tags | ||||
|---|---|---|---|---|---|
|
|||||
Impacted products
| Vendor | Product | Version | ||
|---|---|---|---|---|
| Juniper Networks | Junos OS |
Version: 0 ≤ Version: 23.4 ≤ Version: 24.2 ≤ Version: 24.4 ≤ Version: 25.2 ≤ |
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CVE-2026-33785 (GCVE-0-2026-33785)
Vulnerability from cvelistv5
Published
2026-04-09 21:37
Modified
2026-04-14 03:55
Severity ?
VLAI Severity ?
EPSS score ?
CWE
- CWE-862 - Missing Authorization
Summary
A Missing Authorization vulnerability in the CLI of Juniper Networks Junos OS on MX Series allows a local, authenticated user with low privileges to execute specific commands which will lead to a complete compromise of managed devices.
Any user logged in, without requiring specific privileges, can issue 'request csds' CLI operational commands. These commands are only meant to be executed by high privileged or users designated for Juniper Device Manager (JDM) / Connected Security Distributed Services (CSDS) operations as they will impact all aspects of the devices managed via the respective MX.
This issue affects Junos OS on MX Series:
* 24.4 releases before 24.4R2-S3,
* 25.2 releases before 25.2R2.
This issue does not affect Junos OS releases before 24.4.
References
| URL | Tags | ||||
|---|---|---|---|---|---|
|
|||||
Impacted products
| Vendor | Product | Version | ||
|---|---|---|---|---|
| Juniper Networks | Junos OS |
Version: 24.4 ≤ Version: 25.2 ≤ |
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CVE-2026-33781 (GCVE-0-2026-33781)
Vulnerability from cvelistv5
Published
2026-04-09 21:35
Modified
2026-04-10 14:10
Severity ?
VLAI Severity ?
EPSS score ?
CWE
- CWE-754 - Improper Check for Unusual or Exceptional Conditions
Summary
An Improper Check for Unusual or Exceptional Conditions vulnerability in the packet forwarding engine (pfe) of Juniper Networks Junos OS on specific EX and QFX Series devices allow an unauthenticated, adjacent attacker to cause a complete Denial of Service (DoS).
On EX4k, and QFX5k platforms configured as service-provider edge devices, if L2PT is enabled on the UNI and VSTP is enabled on NNI in VXLAN scenarios, receiving VSTP BPDUs on UNI leads to packet buffer allocation failures, resulting in the device to not pass traffic anymore until it is manually recovered with a restart.This issue affects Junos OS:
* 24.4 releases before 24.4R2,
* 25.2 releases before 25.2R1-S1, 25.2R2.
This issue does not affect Junos OS releases before 24.4R1.
References
| URL | Tags | ||||
|---|---|---|---|---|---|
|
|||||
Impacted products
| Vendor | Product | Version | ||
|---|---|---|---|---|
| Juniper Networks | Junos OS |
Version: 24.4 ≤ Version: 25.2 ≤ |
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CVE-2026-33778 (GCVE-0-2026-33778)
Vulnerability from cvelistv5
Published
2026-04-09 21:35
Modified
2026-04-10 14:11
Severity ?
VLAI Severity ?
EPSS score ?
CWE
- CWE-1286 - Improper Validation of Syntactic Correctness of Input
Summary
An Improper Validation of Syntactic Correctness of Input vulnerability in the IPsec library used by kmd and iked of Juniper Networks Junos OS on SRX Series and MX Series allows an unauthenticated, network-based attacker to cause a complete Denial-of-Service (DoS).
If an affected device receives a specifically malformed first ISAKMP packet from the initiator, the kmd/iked process will crash and restart, which momentarily prevents new security associations (SAs) for from being established. Repeated exploitation of this vulnerability causes a complete inability to establish new VPN connections.
This issue affects Junos OS on
SRX Series and MX Series:
* all versions before 22.4R3-S9,
* 23.2 version before 23.2R2-S6,
* 23.4 version before 23.4R2-S7,
* 24.2 versions before 24.2R2-S4,
* 24.4 versions before 24.4R2-S3,
* 25.2 versions before 25.2R1-S2, 25.2R2.
References
| URL | Tags | ||||
|---|---|---|---|---|---|
|
|||||
Impacted products
| Vendor | Product | Version | ||
|---|---|---|---|---|
| Juniper Networks | Junos OS |
Version: 0 ≤ Version: 23.2 ≤ Version: 23.4 ≤ Version: 24.2 ≤ Version: 24.4 ≤ Version: 25.2 ≤ |
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CVE-2026-33776 (GCVE-0-2026-33776)
Vulnerability from cvelistv5
Published
2026-04-09 21:34
Modified
2026-04-10 14:13
Severity ?
5.5 (Medium) - CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N
6.8 (Medium) - CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:H/VI:N/VA:N/SC:N/SI:N/SA:N/AU:Y/RE:M
6.8 (Medium) - CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:H/VI:N/VA:N/SC:N/SI:N/SA:N/AU:Y/RE:M
VLAI Severity ?
EPSS score ?
CWE
- CWE-862 - Missing Authorization
Summary
A Missing Authorization vulnerability in the CLI of Juniper Networks Junos OS and Junos OS Evolved allows a local user with low privileges to read sensitive information.
A local user with low privileges can execute the CLI command 'show mgd' with specific arguments which will expose sensitive information.
This issue affects
Junos OS:
* all versions before 22.4R3-S8,
* 23.2 versions before 23.2R2-S6,
* 23.4 versions before 23.4R2-S6,
* 24.2 versions before 24.2R2-S4,
* 24.4 versions before 24.4R2-S1,
* 25.2 version before 25.2R1-S2, 25.2R2;
Junos OS Evolved:
* all versions before 23.2R2-S6-EVO,
* 23.4 version before 23.4R2-S6-EVO,
* 24.2 version before 24.2R2-S4-EVO,
* 24.4 versions before 24.4R2-S1-EVO,
* 25.2 versions before 25.2R2-EVO.
References
| URL | Tags | ||||
|---|---|---|---|---|---|
|
|||||
Impacted products
| Vendor | Product | Version | |||||||
|---|---|---|---|---|---|---|---|---|---|
| Juniper Networks | Junos OS |
Version: 0 ≤ Version: 23.2 ≤ Version: 23.4 ≤ Version: 24.2 ≤ Version: 24.4 ≤ Version: 25.2 ≤ |
|||||||
|
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CVE-2026-33774 (GCVE-0-2026-33774)
Vulnerability from cvelistv5
Published
2026-04-09 21:34
Modified
2026-04-10 14:14
Severity ?
6.5 (Medium) - CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:N
6.9 (Medium) - CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:L/VI:L/VA:N/SC:N/SI:N/SA:N/AU:Y/R:U/RE:L
6.9 (Medium) - CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:L/VI:L/VA:N/SC:N/SI:N/SA:N/AU:Y/R:U/RE:L
VLAI Severity ?
EPSS score ?
CWE
- CWE-754 - Improper Check for Unusual or Exceptional Conditions
Summary
An Improper Check for Unusual or Exceptional Conditions vulnerability in the packet forwarding engine (pfe) of Juniper Networks Junos OS on MX Series allows an unauthenticated, network-based attacker to bypass the configured firewall filter and access the control-plane of the device.
On MX platforms with
MPC10, MPC11, LC4800 or LC9600
line cards, and MX304, firewall filters applied on a loopback interface lo0.n (where n is a non-0 number) don't get executed when lo0.n is in the global VRF / default routing-instance.
An affected configuration would be:
user@host# show configuration interfaces lo0 | display set
set interfaces lo0 unit 1 family inet filter input <filter-name>
where a firewall filter is applied to a non-0 loopback interface, but that loopback interface is not referred to in any routing-instance (RI) configuration, which implies that it's used in the default RI.
The issue can be observed with the CLI command:
user@device> show firewall counter filter <filter_name>
not showing any matches.
This issue affects Junos OS on MX Series:
* all versions before 23.2R2-S6,
* 23.4 versions before 23.4R2-S7,
* 24.2 versions before 24.2R2,
* 24.4 versions before 24.4R2.
References
| URL | Tags | ||||
|---|---|---|---|---|---|
|
|||||
Impacted products
| Vendor | Product | Version | ||
|---|---|---|---|---|
| Juniper Networks | Junos OS |
Version: 0 ≤ Version: 23.4 ≤ Version: 24.2 ≤ Version: 24.4 ≤ |
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CVE-2026-33797 (GCVE-0-2026-33797)
Vulnerability from cvelistv5
Published
2026-04-09 21:31
Modified
2026-04-13 18:06
Severity ?
VLAI Severity ?
EPSS score ?
CWE
- CWE-20 - Improper Input Validation
Summary
An Improper Input Validation vulnerability in Juniper Networks Junos OS and Junos OS Evolved allows an unauthenticated, adjacent attacker, sending a specific genuine BGP packet in an already established BGP session to reset only that session causing a Denial of Service (DoS).
An attacker repeatedly sending the packet will sustain the Denial of Service (DoS).This issue affects Junos OS:
* 25.2 versions before 25.2R2
This issue doesn't not affected Junos OS versions before 25.2R1.
This issue affects Junos OS Evolved:
* 25.2-EVO versions before 25.2R2-EVO
This issue doesn't not affected Junos OS Evolved versions before 25.2R1-EVO.
eBGP and iBGP are affected.
IPv4 and IPv6 are affected.
References
| URL | Tags | ||||
|---|---|---|---|---|---|
|
|||||
Impacted products
| Vendor | Product | Version | |||||||
|---|---|---|---|---|---|---|---|---|---|
| Juniper Networks | Junos OS |
Version: 25.2 ≤ |
|||||||
|
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CVE-2026-33779 (GCVE-0-2026-33779)
Vulnerability from cvelistv5
Published
2026-04-09 21:30
Modified
2026-04-13 18:06
Severity ?
6.5 (Medium) - CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:L/A:N
8.3 (High) - CVSS:4.0/AV:N/AC:H/AT:N/PR:N/UI:N/VC:H/VI:L/VA:N/SC:N/SI:N/SA:N/RE:M
8.3 (High) - CVSS:4.0/AV:N/AC:H/AT:N/PR:N/UI:N/VC:H/VI:L/VA:N/SC:N/SI:N/SA:N/RE:M
VLAI Severity ?
EPSS score ?
CWE
- CWE-296 - Improper Following of a Certificate's Chain of Trust
Summary
An Improper Following of a Certificate's Chain of Trust vulnerability in J-Web of Juniper Networks Junos OS on SRX Series allows a PITM to intercept the communication of the device and get access to confidential information and potentially modify it.
When an SRX device is provisioned to connect to Security Director (SD) cloud, it doesn't perform sufficient verification of the received server certificate. This allows a PITM to intercept the communication between the SRX and SD cloud and access credentials and other sensitive information.
This issue affects Junos OS:
* all versions before 22.4R3-S9,
* 23.2 versions before 23.2R2-S6,
* 23.4 versions before 23.4R2-S7,
* 24.2 versions before 24.2R2-S3,
* 24.4 versions before 24.4R2-S2,
* 25.2 versions before 25.2R1-S2, 25.2R2.
References
| URL | Tags | ||||
|---|---|---|---|---|---|
|
|||||
Impacted products
| Vendor | Product | Version | ||
|---|---|---|---|---|
| Juniper Networks | Junos OS |
Version: 0 ≤ Version: 23.2 ≤ Version: 23.4 ≤ Version: 24.2 ≤ Version: 24.4 ≤ Version: 25.2 ≤ |
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CVE-2026-33775 (GCVE-0-2026-33775)
Vulnerability from cvelistv5
Published
2026-04-09 21:30
Modified
2026-04-13 18:06
Severity ?
VLAI Severity ?
EPSS score ?
CWE
- CWE-401 - Missing Release of Memory after Effective Lifetime
Summary
A Missing Release of Memory after Effective Lifetime vulnerability in the BroadBand Edge subscriber management daemon (bbe-smgd) of Juniper Networks Junos OS on MX Series allows an adjacent, unauthenticated attacker to cause a Denial of Service (DoS).
If the authentication packet-type option is configured and a received packet does not match that packet type, the memory leak occurs. When all memory
available to bbe-smgd has been consumed, no new subscribers will be able to login.
The memory utilization of bbe-smgd can be monitored with the following show command:
user@host> show system processes extensive | match bbe-smgd
The below log message can be observed when this limit has been reached:
bbesmgd[<PID>]: %DAEMON-3-SMD_DPROF_RSMON_ERROR: Resource unavailability, Reason: Daemon Heap Memory exhaustion
This issue affects Junos OS on MX Series:
* all versions before 22.4R3-S8,
* 23.2 versions before 23.2R2-S5,
* 23.4 versions before 23.4R2-S6,
* 24.2 versions before 24.2R2-S2,
* 24.4 versions before 24.4R2,
* 25.2 versions before 25.2R2.
References
| URL | Tags | ||||
|---|---|---|---|---|---|
|
|||||
Impacted products
| Vendor | Product | Version | ||
|---|---|---|---|---|
| Juniper Networks | Junos OS |
Version: 0 ≤ Version: 23.2 ≤ Version: 23.4 ≤ Version: 24.2 ≤ Version: 24.4 ≤ Version: 25.2 ≤ |
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CVE-2026-33782 (GCVE-0-2026-33782)
Vulnerability from cvelistv5
Published
2026-04-09 21:29
Modified
2026-04-13 18:06
Severity ?
VLAI Severity ?
EPSS score ?
CWE
- CWE-401 - Missing Release of Memory after Effective Lifetime
Summary
A Missing Release of Memory after Effective Lifetime vulnerability in the DHCP daemon (jdhcpd) of Juniper Networks Junos OS on MX Series, allows an adjacent, unauthenticated attacker to cause a memory leak, that will eventually cause a complete Denial-of-Service (DoS).
In a DHCPv6 over PPPoE, or DHCPv6 over VLAN with Active lease query or Bulk lease query scenario, every subscriber logout will leak a small amount of memory. When all available memory has been exhausted, jdhcpd will crash and restart which causes a complete service impact until the process has recovered.
The memory usage of jdhcpd can be monitored with:
user@host> show system processes extensive | match jdhcpd
This issue affects Junos OS:
* all versions before 22.4R3-S1,
* 23.2 versions before 23.2R2,
* 23.4 versions before 23.4R2.
References
| URL | Tags | ||||
|---|---|---|---|---|---|
|
|||||
Impacted products
| Vendor | Product | Version | ||
|---|---|---|---|---|
| Juniper Networks | Junos OS |
Version: 0 ≤ Version: 23.2 ≤ Version: 23.4 ≤ |
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CVE-2026-33780 (GCVE-0-2026-33780)
Vulnerability from cvelistv5
Published
2026-04-09 21:29
Modified
2026-04-13 18:06
Severity ?
VLAI Severity ?
EPSS score ?
CWE
- CWE-401 - Missing Release of Memory after Effective Lifetime
Summary
A Missing Release of Memory after Effective Lifetime vulnerability in the Layer 2 Address Learning Daemon (l2ald) of Juniper Networks Junos OS and Junos OS Evolved allows an adjacent, unauthenticated attacker to cause a memory leak ultimately leading to a Denial of Service (DoS).
In an EVPN-MPLS scenario, routes learned from remote multi-homed Provider Edge (PE) devices are programmed as ESI routes. Due to a logic issue in the l2ald memory management, memory allocated for these routes is not released when there is churn for these routes. As a result, memory leaks in the l2ald process which will ultimately lead to a crash and restart of l2ald.
Use the following command to monitor the memory consumption by l2ald:
user@device> show system process extensive | match "PID|l2ald"
This issue affects:
Junos OS:
* all versions before 22.4R3-S5,
* 23.2 versions before 23.2R2-S3,
* 23.4 versions before 23.4R2-S4,
* 24.2 versions before 24.2R2;
Junos OS Evolved:
* all versions before 22.4R3-S5-EVO,
* 23.2 versions before 23.2R2-S3-EVO,
* 23.4 versions before 23.4R2-S4-EVO,
* 24.2 versions before 24.2R2-EVO.
References
| URL | Tags | ||||
|---|---|---|---|---|---|
|
|||||
Impacted products
| Vendor | Product | Version | |||||||
|---|---|---|---|---|---|---|---|---|---|
| Juniper Networks | Junos OS |
Version: 0 ≤ Version: 23.2 ≤ Version: 23.4 ≤ Version: 24.2 ≤ |
|||||||
|
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CVE-2026-33773 (GCVE-0-2026-33773)
Vulnerability from cvelistv5
Published
2026-04-09 21:28
Modified
2026-04-13 18:06
Severity ?
5.8 (Medium) - CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:N/I:L/A:N
6.9 (Medium) - CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:N/SC:N/SI:L/SA:N/AU:Y/R:U/RE:M
6.9 (Medium) - CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:N/SC:N/SI:L/SA:N/AU:Y/R:U/RE:M
VLAI Severity ?
EPSS score ?
CWE
- CWE-1419 - Incorrect Initialization of Resource
Summary
An Incorrect Initialization of Resource vulnerability in the packet forwarding engine (pfe) of Juniper Networks Junos OS on specific EX Series and QFX Series device allows an unauthenticated, network-based attacker to cause an integrity impact to downstream networks.
When the same family inet or inet6 filter is applied on an IRB interface and on a physical interface as egress filter on EX4100, EX4400, EX4650 and QFX5120 devices, only one of the two filters will be applied, which can lead to traffic being sent out one of these interfaces which should have been blocked.
This issue affects Junos OS on EX Series and QFX Series:
* 23.4 version 23.4R2-S6,
* 24.2 version 24.2R2-S3.
No other Junos OS versions are affected.
References
| URL | Tags | ||||
|---|---|---|---|---|---|
|
|||||
Impacted products
| Vendor | Product | Version | ||
|---|---|---|---|---|
| Juniper Networks | Junos OS |
Version: 23.4R2-S6 ≤ Version: 24.2R2-S3 ≤ |
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CVE-2026-33786 (GCVE-0-2026-33786)
Vulnerability from cvelistv5
Published
2026-04-09 21:28
Modified
2026-04-13 18:06
Severity ?
5.5 (Medium) - CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
6.8 (Medium) - CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:L/AU:Y/R:A/RE:M
6.8 (Medium) - CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:L/AU:Y/R:A/RE:M
VLAI Severity ?
EPSS score ?
CWE
- CWE-754 - Improper Check for Unusual or Exceptional Conditions
Summary
An Improper Check for Unusual or Exceptional Conditions vulnerability in the chassis control daemon (chassisd) of Juniper Networks Junos OS on SRX1600, SRX2300 and SRX4300 allows a local attacker with low privileges to cause a complete Denial of Service (DoS).
When a specific 'show chassis' CLI command is executed, chassisd crashes and restarts which causes a momentary impact to all traffic until all modules are online again.
This issue affects Junos OS on SRX1600, SRX2300 and SRX4300:
* 24.4 versions before 24.4R1-S3, 24.4R2.
This issue does not affect Junos OS versions before 24.4R1.
References
| URL | Tags | ||||
|---|---|---|---|---|---|
|
|||||
Impacted products
| Vendor | Product | Version | ||
|---|---|---|---|---|
| Juniper Networks | Junos OS |
Version: 24.4 ≤ |
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CVE-2026-21916 (GCVE-0-2026-21916)
Vulnerability from cvelistv5
Published
2026-04-09 21:28
Modified
2026-04-13 13:04
Severity ?
VLAI Severity ?
EPSS score ?
CWE
- CWE-61 - UNIX Symbolic Link (Symlink) Following
Summary
A UNIX Symbolic Link (Symlink) Following vulnerability in the CLI of Juniper Networks Junos OS allows a local, authenticated attacker with low privileges to escalate their privileges to root which will lead to a complete compromise of the system.
When after a user has performed a specific 'file link ...' CLI operation, another user commits (unrelated configuration changes), the first user can login as root.
This issue affects Junos OS:
* all versions before 23.2R2-S7,
* 23.4 versions before 23.4R2-S6,
* 24.2 versions before 24.2R2-S3,
* 24.4 versions before 24.4R2-S2,
* 25.2 versions before 25.2R2.
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References
| URL | Tags | ||||
|---|---|---|---|---|---|
|
|||||
Impacted products
| Vendor | Product | Version | ||
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| Juniper Networks | Junos OS |
Version: 0 ≤ Version: 23.4 ≤ Version: 24.2 ≤ Version: 24.4 ≤ Version: 25.2 ≤ |
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CVE-2026-21919 (GCVE-0-2026-21919)
Vulnerability from cvelistv5
Published
2026-04-09 21:26
Modified
2026-04-13 18:06
Severity ?
VLAI Severity ?
EPSS score ?
CWE
- CWE-821 - Incorrect Synchronization
Summary
An Incorrect Synchronization vulnerability in the management daemon (mgd) of Juniper Networks Junos OS and Junos OS Evolved allows a network-based attacker with low privileges to cause a complete Denial-of-Service (DoS) of the management plane.
When NETCONF sessions are quickly established and disconnected, a locking issue causes mgd processes to hang in an unusable state. When the maximum number of mgd processes has been reached, no new logins are possible. This leads to the inability to manage the device and requires a power-cycle to recover.
This issue can be monitored by checking for mgd processes in lockf state in the output of 'show system processes extensive':
user@host> show system processes extensive | match mgd
<pid> root 20 0 501M 4640K lockf 1 0:01 0.00% mgd
If the system still can be accessed (either via the CLI or as root, which might still be possible as last resort as this won't invoke mgd), mgd processes in this state can be killed with 'request system process terminate <PID>' from the CLI or with 'kill -9 <PID>' from the shell.
This issue affects:
Junos OS:
* 23.4 versions before 23.4R2-S4,
* 24.2 versions before 24.2R2-S1,
* 24.4 versions before 24.4R1-S3, 24.4R2;
This issue does not affect Junos OS versions before 23.4R1;
Junos OS Evolved:
* 23.4 versions before 23.4R2-S5-EVO,
* 24.2 versions before 24.2R2-S1-EVO,
* 24.4 versions before 24.4R1-S3-EVO, 24.4R2-EVO.
This issue does not affect Junos OS Evolved versions before 23.4R1-EVO;
References
| URL | Tags | ||||
|---|---|---|---|---|---|
|
|||||
Impacted products
| Vendor | Product | Version | |||||||
|---|---|---|---|---|---|---|---|---|---|
| Juniper Networks | Junos OS |
Version: 23.4 ≤ Version: 24.2 ≤ Version: 24.4 ≤ |
|||||||
|
|||||||||
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CVE-2026-33793 (GCVE-0-2026-33793)
Vulnerability from cvelistv5
Published
2026-04-09 21:24
Modified
2026-04-16 15:14
Severity ?
VLAI Severity ?
EPSS score ?
CWE
- CWE-250 - Execution with Unnecessary Privileges
Summary
An Execution with Unnecessary Privileges vulnerability in the User Interface (UI) of Juniper Networks Junos OS and Junos OS Evolved allows a local, low-privileged attacker to gain root privileges, thus compromising the system.
When a configuration that allows unsigned Python op scripts is present on the device, a non-root user is able to execute malicious op scripts as a root-equivalent user, leading to privilege escalation.
This issue affects Junos OS:
* All versions before 22.4R3-S7,
* from 23.2 before 23.2R2-S4,
* from 23.4 before 23.4R2-S6,
* from 24.2 before 24.2R1-S2, 24.2R2,
* from 24.4 before 24.4R1-S2, 24.4R2;
Junos OS Evolved:
* All versions before 22.4R3-S7-EVO,
* from 23.2 before 23.2R2-S4-EVO,
* from 23.4 before 23.4R2-S6-EVO,
* from 24.2 before 24.2R2-EVO,
* from 24.4 before 24.4R1-S1-EVO, 24.4R2-EVO.
References
| URL | Tags | ||||
|---|---|---|---|---|---|
|
|||||
Impacted products
| Vendor | Product | Version | |||||||
|---|---|---|---|---|---|---|---|---|---|
| Juniper Networks | Junos OS |
Version: 0 ≤ Version: 23.2 ≤ Version: 23.4 ≤ Version: 24.2 ≤ Version: 24.4 ≤ |
|||||||
|
|||||||||
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"value": "This issue can affect all systems with Python 3 op scripts enabled:\u003cbr\u003e\u003cbr\u003e\u003ctt\u003e[ system scripts language python3 ]\u003c/tt\u003e\u003cbr\u003e\u003cbr\u003eHowever, the risk of malicious exploitation is significantly higher when the ability to execute Python 3 op scripts from a remote location is enabled:\u003cbr\u003e\u003cbr\u003e\n\n\u003ctt\u003e[ system scripts op allow-url-for-python ]\u003c/tt\u003e\n\n\u003cbr\u003e\u003cbr\u003eStarting in Junos OS Evolved Release 21.2R1, the \u003ctt\u003ejunos-defaults\u003c/tt\u003e configuration group includes \u0027\u003ctt\u003esystem scripts language python3\u003c/tt\u003e\u0027 enabled by default.\u003cbr\u003e\u003cbr\u003e\n\n\u003cbr\u003e"
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"value": "This issue can affect all systems with Python 3 op scripts enabled:\n\n[ system scripts language python3 ]\n\nHowever, the risk of malicious exploitation is significantly higher when the ability to execute Python 3 op scripts from a remote location is enabled:\n\n\n\n[ system scripts op allow-url-for-python ]\n\n\n\nStarting in Junos OS Evolved Release 21.2R1, the junos-defaults configuration group includes \u0027system scripts language python3\u0027 enabled by default."
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CVE-2025-30650 (GCVE-0-2025-30650)
Vulnerability from cvelistv5
Published
2026-04-08 17:26
Modified
2026-04-13 21:17
Severity ?
VLAI Severity ?
EPSS score ?
CWE
- CWE-306 - Missing Authentication for Critical Function
Summary
A Missing Authentication for Critical Function vulnerability in command processing of Juniper Networks Junos OS allows a privileged local attacker to gain access to Linux-based line cards as root.
This issue affects systems running Junos OS using Linux-based line cards. Affected line cards include:
* MPC7, MPC8, MPC9, MPC10, MPC11
* LC2101, LC2103
* LC480, LC4800, LC9600
* MX304 (built-in FPC)
* MX-SPC3
* SRX5K-SPC3
* EX9200-40XS
* FPC3-PTX-U2, FPC3-PTX-U3
* FPC3-SFF-PTX
* LC1101, LC1102, LC1104, LC1105
This issue affects Junos OS:
* all versions before 22.4R3-S8,
* from 23.2 before 23.2R2-S6,
* from 23.4 before 23.4R2-S6,
* from 24.2 before 24.2R2-S3,
* from 24.4 before 24.4R2,
* from 25.2 before 25.2R2.
References
| URL | Tags | |||||||
|---|---|---|---|---|---|---|---|---|
|
||||||||
Impacted products
| Vendor | Product | Version | ||
|---|---|---|---|---|
| Juniper Networks | Junos OS |
Version: 0 ≤ Version: 23.2 ≤ Version: 23.4 ≤ Version: 24.2 ≤ Version: 24.4 ≤ Version: 25.2 ≤ |
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CVE-2026-21921 (GCVE-0-2026-21921)
Vulnerability from cvelistv5
Published
2026-01-15 20:28
Modified
2026-01-15 20:55
Severity ?
VLAI Severity ?
EPSS score ?
CWE
- CWE-416 - Use After Free
Summary
A Use After Free vulnerability in the chassis daemon (chassisd) of Juniper Networks Junos OS and Junos OS Evolved allows a network-based attacker authenticated with low privileges to cause a Denial-of-Service (DoS).
When telemetry collectors are frequently subscribing and unsubscribing to sensors continuously over a long period of time, telemetry-capable processes like chassisd, rpd or mib2d will crash and restart, which - depending on the process - can cause a complete outage until the system has recovered.
This issue affects:
Junos OS:
* all versions before 22.4R3-S8,
* 23.2 versions before 23.2R2-S5,
* 23.4 versions before 23.4R2;
Junos OS Evolved:
* all versions before 22.4R3-S8-EVO,
* 23.2 versions before 23.2R2-S5-EVO,
* 23.4 versions before 23.4R2-EVO.
References
| URL | Tags | |||||||
|---|---|---|---|---|---|---|---|---|
|
||||||||
Impacted products
| Vendor | Product | Version | |||||||
|---|---|---|---|---|---|---|---|---|---|
| Juniper Networks | Junos OS |
Version: 0 ≤ Version: 23.2 ≤ Version: 23.4 ≤ |
|||||||
|
|||||||||
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CVE-2026-21920 (GCVE-0-2026-21920)
Vulnerability from cvelistv5
Published
2026-01-15 20:28
Modified
2026-01-15 20:59
Severity ?
VLAI Severity ?
EPSS score ?
CWE
- CWE-252 - Unchecked Return Value
Summary
An Unchecked Return Value vulnerability in the DNS module of Juniper Networks Junos OS on SRX Series allows an unauthenticated, network-based attacker to cause a Denial-of-Service (DoS).
If an SRX Series device configured for DNS processing, receives a specifically formatted DNS request flowd will crash and restart, which causes a service interruption until the process has recovered.
This issue affects Junos OS on SRX Series:
* 23.4 versions before 23.4R2-S5,
* 24.2 versions before 24.2R2-S1,
* 24.4 versions before 24.4R2.
This issue does not affect Junos OS versions before 23.4R1.
References
| URL | Tags | |||||||
|---|---|---|---|---|---|---|---|---|
|
||||||||
Impacted products
| Vendor | Product | Version | ||
|---|---|---|---|---|
| Juniper Networks | Junos OS |
Version: 23.4 ≤ Version: 24.2 ≤ Version: 24.4 ≤ |
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CVE-2026-21918 (GCVE-0-2026-21918)
Vulnerability from cvelistv5
Published
2026-01-15 20:27
Modified
2026-01-15 21:13
Severity ?
VLAI Severity ?
EPSS score ?
CWE
- CWE-415 - Double Free
Summary
A Double Free vulnerability in the flow processing daemon (flowd) of Juniper Networks Junos OS on SRX and MX Series allows an unauthenticated, network-based attacker to cause a Denial-of-Service (DoS). On all SRX and MX Series platforms, when during TCP session establishment a specific sequence of packets is encountered a double free happens. This causes flowd to crash and the respective FPC to restart.
This issue affects Junos OS on SRX and MX Series:
* all versions before 22.4R3-S7,
* 23.2 versions before 23.2R2-S3,
* 23.4 versions before 23.4R2-S4,
* 24.2 versions before 24.2R2.
References
| URL | Tags | |||||||
|---|---|---|---|---|---|---|---|---|
|
||||||||
Impacted products
| Vendor | Product | Version | ||
|---|---|---|---|---|
| Juniper Networks | Junos OS |
Version: 0 ≤ Version: 23.2 ≤ Version: 23.4 ≤ Version: 24.2 ≤ |
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CVE-2026-21917 (GCVE-0-2026-21917)
Vulnerability from cvelistv5
Published
2026-01-15 20:27
Modified
2026-01-15 21:12
Severity ?
VLAI Severity ?
EPSS score ?
CWE
- CWE-1286 - Improper Validation of Syntactic Correctness of Input
Summary
An Improper Validation of Syntactic Correctness of Input vulnerability in the Web-Filtering module of Juniper Networks Junos OS on SRX Series allows an unauthenticated, network-based attacker to cause a Denial-of-Service (DoS).
If an SRX device configured for UTM Web-Filtering receives a specifically malformed SSL packet, this will cause an FPC crash and restart.
This issue affects Junos OS on SRX Series:
* 23.2 versions from 23.2R2-S2 before 23.2R2-S5,
* 23.4 versions from 23.4R2-S1 before 23.4R2-S5,
* 24.2 versions before 24.2R2-S2,
* 24.4 versions before 24.4R1-S3, 24.4R2.
Earlier versions of Junos are also affected, but no fix is available.
References
| URL | Tags | |||||||
|---|---|---|---|---|---|---|---|---|
|
||||||||
Impacted products
| Vendor | Product | Version | ||
|---|---|---|---|---|
| Juniper Networks | Junos OS |
Version: 23.2R2-S2 ≤ Version: 23.4R2-S1 ≤ Version: 24.2 ≤ Version: 24.4 ≤ |
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CVE-2026-21914 (GCVE-0-2026-21914)
Vulnerability from cvelistv5
Published
2026-01-15 20:25
Modified
2026-01-15 20:44
Severity ?
VLAI Severity ?
EPSS score ?
CWE
- CWE-667 - Improper Locking
Summary
An Improper Locking vulnerability in the GTP plugin of Juniper Networks Junos OS on SRX Series allows an unauthenticated, network-based attacker to cause a Denial-of-Service (Dos).
If an SRX Series device receives a specifically malformed GPRS Tunnelling Protocol (GTP) Modify Bearer Request message, a lock is acquired and never released. This results in other threads not being able to acquire a lock themselves, causing a watchdog timeout leading to FPC crash and restart. This issue leads to a complete traffic outage until the device has automatically recovered.
This issue affects Junos OS on SRX Series:
* all versions before 22.4R3-S8,
* 23.2 versions before 23.2R2-S5,
* 23.4 versions before 23.4R2-S6,
* 24.2 versions before 24.2R2-S3,
* 24.4 versions before 24.4R2-S2,
* 25.2 versions before 25.2R1-S1, 25.2R2.
References
| URL | Tags | |||||||
|---|---|---|---|---|---|---|---|---|
|
||||||||
Impacted products
| Vendor | Product | Version | ||
|---|---|---|---|---|
| Juniper Networks | Junos OS |
Version: 0 ≤ Version: 23.2 ≤ Version: 23.4 ≤ Version: 24.2 ≤ Version: 24.4 ≤ Version: 25.2 ≤ |
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CVE-2026-21913 (GCVE-0-2026-21913)
Vulnerability from cvelistv5
Published
2026-01-15 20:25
Modified
2026-01-15 20:45
Severity ?
VLAI Severity ?
EPSS score ?
CWE
- CWE-1419 - Incorrect Initialization of Resource
Summary
An Incorrect Initialization of Resource vulnerability in the Internal Device Manager (IDM) of Juniper Networks Junos OS on EX4000 models allows an unauthenticated, network-based attacker to cause a Denial-of-Service (DoS).
On EX4000 models with 48 ports (EX4000-48T, EX4000-48P, EX4000-48MP) a high volume of traffic destined to the device will cause an FXPC crash and restart, which leads to a complete service outage until the device has automatically restarted.
The following reboot reason can be seen in the output of 'show chassis routing-engine' and as a log message:
reason=0x4000002 reason_string=0x4000002:watchdog + panic with core dump
This issue affects Junos OS on EX4000-48T, EX4000-48P and EX4000-48MP:
* 24.4 versions before 24.4R2,
* 25.2 versions before 25.2R1-S2, 25.2R2.
This issue does not affect versions before 24.4R1 as the first Junos OS version for the EX4000 models was 24.4R1.
References
| URL | Tags | |||||||
|---|---|---|---|---|---|---|---|---|
|
||||||||
Impacted products
| Vendor | Product | Version | ||
|---|---|---|---|---|
| Juniper Networks | Junos OS |
Version: 24.4 ≤ Version: 25.2 ≤ |
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CVE-2026-21912 (GCVE-0-2026-21912)
Vulnerability from cvelistv5
Published
2026-01-15 20:24
Modified
2026-01-15 20:50
Severity ?
VLAI Severity ?
EPSS score ?
CWE
- CWE-367 - Time-of-check Time-of-use (TOCTOU) Race Condition
Summary
A Time-of-check Time-of-use (TOCTOU) Race Condition vulnerability in the method to collect FPC Ethernet firmware statistics of Juniper Networks Junos OS on MX10k Series allows a local, low-privileged attacker executing the 'show system firmware' CLI command to cause an LC480 or LC2101 line card to reset.
On MX10k Series systems with LC480 or LC2101 line cards, repeated execution of the 'show system firmware' CLI command can cause the line card to crash and restart. Additionally, some time after the line card crashes, chassisd may also crash and restart, generating a core dump.This issue affects Junos OS on MX10k Series:
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* from 22.4 before 22.4R3-S6,
* from 23.2 before 23.2R2-S2,
* from 23.4 before 23.4R2-S3,
* from 24.2 before 24.2R2.
References
| URL | Tags | |||||||
|---|---|---|---|---|---|---|---|---|
|
||||||||
Impacted products
| Vendor | Product | Version | ||
|---|---|---|---|---|
| Juniper Networks | Junos OS |
Version: 0 ≤ Version: 21.4 ≤ Version: 22.2 ≤ Version: 22.4 ≤ Version: 23.2 ≤ Version: 23.4 ≤ Version: 24.2 ≤ |
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CVE-2026-21910 (GCVE-0-2026-21910)
Vulnerability from cvelistv5
Published
2026-01-15 20:23
Modified
2026-01-15 20:51
Severity ?
VLAI Severity ?
EPSS score ?
CWE
- CWE-754 - Improper Check for Unusual or Exceptional Conditions
Summary
An Improper Check for Unusual or Exceptional Conditions vulnerability in the packet forwarding engine (PFE) of Juniper Networks Junos OS on EX4k Series and QFX5k Series platforms allows an unauthenticated network-adjacent attacker flapping an interface to cause traffic between VXLAN Network Identifiers (VNIs) to drop, leading to a Denial of Service (DoS).
On all EX4k and QFX5k platforms, a link flap in an
EVPN-VXLAN configuration Link Aggregation Group (LAG)
results in Inter-VNI traffic dropping when there are multiple load-balanced next-hop routes for the same destination.
This issue is only applicable to systems that support EVPN-VXLAN Virtual Port-Link Aggregation Groups (VPLAG), such as the QFX5110, QFX5120, QFX5200, EX4100, EX4300, EX4400, and EX4650.
Service can only be restored by restarting the affected FPC via the 'request chassis fpc restart slot <slot-number>' command.
This issue affects Junos OS
on EX4k and QFX5k Series:
* all versions before 21.4R3-S12,
* all versions of 22.2
* from 22.4 before 22.4R3-S8,
* from 23.2 before 23.2R2-S5,
* from 23.4 before 23.4R2-S5,
* from 24.2 before 24.2R2-S3,
* from 24.4 before 24.4R2.
References
| URL | Tags | |||||||
|---|---|---|---|---|---|---|---|---|
|
||||||||
Impacted products
| Vendor | Product | Version | ||
|---|---|---|---|---|
| Juniper Networks | Junos OS |
Version: 0 ≤ Version: 22.2 ≤ Version: 22.4 ≤ Version: 23.2 ≤ Version: 23.4 ≤ Version: 24.2 ≤ Version: 24.4 ≤ |
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CVE-2026-21909 (GCVE-0-2026-21909)
Vulnerability from cvelistv5
Published
2026-01-15 20:22
Modified
2026-01-15 20:52
Severity ?
VLAI Severity ?
EPSS score ?
CWE
- CWE-401 - Missing Release of Memory after Effective Lifetime
Summary
A Missing Release of Memory after Effective Lifetime vulnerability in the routing protocol daemon (rpd) Juniper Networks Junos OS and Junos OS Evolved allows an unauthenticated attacker controlling an adjacent IS-IS neighbor to send a specific update packet causing a memory leak. Continued receipt and processing of these packets will exhaust all available memory, crashing rpd and creating a Denial of Service (DoS) condition.
Memory usage can be monitored through the use of the 'show task memory detail' command. For example:
user@junos> show task memory detail | match ted-infra
TED-INFRA-COOKIE 25 1072 28 1184 229
user@junos>
show task memory detail | match ted-infra
TED-INFRA-COOKIE 31 1360 34 1472 307
This issue affects:
Junos OS:
* from 23.2 before 23.2R2,
* from 23.4 before 23.4R1-S2, 23.4R2,
* from 24.1 before 24.1R2;
Junos OS Evolved:
* from 23.2 before 23.2R2-EVO,
* from 23.4 before 23.4R1-S2-EVO, 23.4R2-EVO,
* from 24.1 before 24.1R2-EVO.
This issue does not affect Junos OS versions before 23.2R1 or Junos OS Evolved versions before 23.2R1-EVO.
References
| URL | Tags | |||||||
|---|---|---|---|---|---|---|---|---|
|
||||||||
Impacted products
| Vendor | Product | Version | |||||||
|---|---|---|---|---|---|---|---|---|---|
| Juniper Networks | Junos OS |
Version: 23.2 ≤ Version: 23.4 ≤ Version: 24.1 ≤ |
|||||||
|
|||||||||
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CVE-2026-21908 (GCVE-0-2026-21908)
Vulnerability from cvelistv5
Published
2026-01-15 20:21
Modified
2026-02-26 15:04
Severity ?
VLAI Severity ?
EPSS score ?
CWE
- CWE-416 - Use After Free
Summary
A Use After Free vulnerability was identified in the 802.1X authentication daemon (dot1xd) of Juniper Networks Junos OS and Junos OS Evolved that could allow an authenticated, network-adjacent attacker flapping a port to crash the dot1xd process, leading to a Denial of Service (DoS), or potentially execute arbitrary code within the context of the process running as root.
The issue is specific to the processing of a change in authorization (CoA) when a port bounce occurs. A pointer is freed but was then referenced later in the same code path. Successful exploitation is outside the attacker's direct control due to the specific timing of the two events required to execute the vulnerable code path.
This issue affects systems with 802.1X authentication port-based network access control (PNAC) enabled.
This issue affects:
Junos OS:
* from 23.2R2-S1 before 23.2R2-S5,
* from 23.4R2 before 23.4R2-S6,
* from 24.2 before 24.2R2-S3,
* from 24.4 before 24.4R2-S1,
* from 25.2 before 25.2R1-S2, 25.2R2;
Junos OS Evolved:
* from 23.2R2-S1 before 23.2R2-S5-EVO,
* from 23.4R2 before 23.4R2-S6-EVO,
* from 24.2 before 24.2R2-S3-EVO,
* from 24.4 before 24.4R2-S1-EVO,
* from 25.2 before 25.2R1-S2-EVO, 25.2R2-EVO.
References
| URL | Tags | |||||||
|---|---|---|---|---|---|---|---|---|
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Impacted products
| Vendor | Product | Version | |||||||
|---|---|---|---|---|---|---|---|---|---|
| Juniper Networks | Junos OS |
Version: 23.2R2-S1 ≤ Version: 23.4R2 ≤ Version: 24.2 ≤ Version: 24.4 ≤ Version: 25.2 ≤ |
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