CVE-2026-33783 (GCVE-0-2026-33783)
Vulnerability from cvelistv5
Published
2026-04-09 21:36
Modified
2026-04-13 18:06
Severity ?
VLAI Severity ?
EPSS score ?
CWE
- CWE-686 - Function Call With Incorrect Argument Type
Summary
A Function Call With Incorrect Argument Type vulnerability in the sensor interface of Juniper Networks Junos OS Evolved on PTX Series allows a network-based, authenticated attacker with low privileges to cause a complete Denial of Service (DoS).
If colored SRTE policy tunnels are provisioned via PCEP, and gRPC is used to monitor traffic in these tunnels, evo-aftmand crashes and doesn't restart which leads to a complete and persistent service impact. The system has to be manually restarted to recover. The issue is seen only when the Originator ASN field in PCEP contains a value larger than 65,535 (32-bit ASN). The issue is not reproducible when SRTE policy tunnels are statically configured.
This issue affects Junos OS Evolved on PTX Series:
* all versions before 22.4R3-S9-EVO,
* 23.2 versions before 23.2R2-S6-EVO,
* 23.4 versions before 23.4R2-S7-EVO,
* 24.2 versions before 24.2R2-S4-EVO,
* 24.4 versions before 24.4R2-S2-EVO,
* 25.2 versions before 25.2R1-S2-EVO, 25.2R2-EVO.
References
| URL | Tags | ||||
|---|---|---|---|---|---|
|
|||||
Impacted products
| Vendor | Product | Version | ||
|---|---|---|---|---|
| Juniper Networks | Junos OS Evolved |
Version: 0 ≤ Version: 23.2 ≤ Version: 23.4 ≤ Version: 24.2 ≤ Version: 24.4 ≤ Version: 25.2 ≤ |
{
"containers": {
"adp": [
{
"metrics": [
{
"other": {
"content": {
"id": "CVE-2026-33783",
"options": [
{
"Exploitation": "none"
},
{
"Automatable": "no"
},
{
"Technical Impact": "partial"
}
],
"role": "CISA Coordinator",
"timestamp": "2026-04-13T17:41:24.598395Z",
"version": "2.0.3"
},
"type": "ssvc"
}
}
],
"providerMetadata": {
"dateUpdated": "2026-04-13T18:06:19.144Z",
"orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
"shortName": "CISA-ADP"
},
"title": "CISA ADP Vulnrichment"
}
],
"cna": {
"affected": [
{
"defaultStatus": "unaffected",
"platforms": [
"PTX Series"
],
"product": "Junos OS Evolved",
"vendor": "Juniper Networks",
"versions": [
{
"lessThan": "22.4R3-S9-EVO",
"status": "affected",
"version": "0",
"versionType": "semver"
},
{
"lessThan": "23.2R2-S6-EVO",
"status": "affected",
"version": "23.2",
"versionType": "semver"
},
{
"lessThan": "23.4R2-S7-EVO",
"status": "affected",
"version": "23.4",
"versionType": "semver"
},
{
"lessThan": "24.2R2-S4-EVO",
"status": "affected",
"version": "24.2",
"versionType": "semver"
},
{
"lessThan": "24.4R2-S2-EVO",
"status": "affected",
"version": "24.4",
"versionType": "semver"
},
{
"lessThan": "25.2R1-S2-EVO, 25.2R2-EVO",
"status": "affected",
"version": "25.2",
"versionType": "semver"
}
]
}
],
"configurations": [
{
"lang": "en",
"supportingMedia": [
{
"base64": false,
"type": "text/html",
"value": "To be exposed to this issue a device needs to be configured with SR specific telemetry statistics:\u003cbr\u003e\u003cbr\u003e\u003ctt\u003e[ protocols source-packet-routing telemetry statistics per-source per-segment-list ]\u003c/tt\u003e"
}
],
"value": "To be exposed to this issue a device needs to be configured with SR specific telemetry statistics:\n\n[ protocols source-packet-routing telemetry statistics per-source per-segment-list ]"
}
],
"datePublic": "2026-04-08T16:00:00.000Z",
"descriptions": [
{
"lang": "en",
"supportingMedia": [
{
"base64": false,
"type": "text/html",
"value": "A Function Call With Incorrect Argument Type vulnerability in the sensor interface of Juniper Networks Junos OS Evolved on PTX Series allows a network-based, authenticated attacker with low privileges to cause a complete Denial of Service (DoS).\u003cbr\u003e\u003cbr\u003e\u003cbr\u003eIf colored SRTE policy tunnels are provisioned via PCEP, and gRPC is used to monitor traffic in these tunnels, evo-aftmand crashes and doesn\u0027t restart which leads to a complete and persistent service impact. The system has to be manually restarted to recover. The issue is seen only when the Originator ASN field in PCEP contains a value larger than 65,535 (32-bit ASN). The issue is not reproducible when SRTE policy tunnels are statically configured.\u003cbr\u003e\u003cbr\u003e\u003cbr\u003eThis issue affects Junos OS Evolved on PTX Series:\u0026nbsp;\u003cp\u003e\u003c/p\u003e\u003cp\u003e\u003c/p\u003e\u003cul\u003e\u003cli\u003eall versions before 22.4R3-S9-EVO,\u003c/li\u003e\u003cli\u003e23.2 versions before 23.2R2-S6-EVO,\u003c/li\u003e\u003cli\u003e23.4 versions before 23.4R2-S7-EVO,\u003c/li\u003e\u003cli\u003e24.2 versions before 24.2R2-S4-EVO,\u003c/li\u003e\u003cli\u003e24.4 versions before 24.4R2-S2-EVO,\u003c/li\u003e\u003cli\u003e25.2 versions before 25.2R1-S2-EVO, 25.2R2-EVO.\u003c/li\u003e\u003c/ul\u003e\u003cp\u003e\u003c/p\u003e\u003cp\u003e\u003cbr\u003e\u003c/p\u003e"
}
],
"value": "A Function Call With Incorrect Argument Type vulnerability in the sensor interface of Juniper Networks Junos OS Evolved on PTX Series allows a network-based, authenticated attacker with low privileges to cause a complete Denial of Service (DoS).\n\n\nIf colored SRTE policy tunnels are provisioned via PCEP, and gRPC is used to monitor traffic in these tunnels, evo-aftmand crashes and doesn\u0027t restart which leads to a complete and persistent service impact. The system has to be manually restarted to recover. The issue is seen only when the Originator ASN field in PCEP contains a value larger than 65,535 (32-bit ASN). The issue is not reproducible when SRTE policy tunnels are statically configured.\n\n\nThis issue affects Junos OS Evolved on PTX Series:\u00a0\n\n\n\n * all versions before 22.4R3-S9-EVO,\n * 23.2 versions before 23.2R2-S6-EVO,\n * 23.4 versions before 23.4R2-S7-EVO,\n * 24.2 versions before 24.2R2-S4-EVO,\n * 24.4 versions before 24.4R2-S2-EVO,\n * 25.2 versions before 25.2R1-S2-EVO, 25.2R2-EVO."
}
],
"exploits": [
{
"lang": "en",
"supportingMedia": [
{
"base64": false,
"type": "text/html",
"value": "Juniper SIRT is not aware of any malicious exploitation of this vulnerability."
}
],
"value": "Juniper SIRT is not aware of any malicious exploitation of this vulnerability."
}
],
"metrics": [
{
"cvssV3_1": {
"attackComplexity": "LOW",
"attackVector": "NETWORK",
"availabilityImpact": "HIGH",
"baseScore": 6.5,
"baseSeverity": "MEDIUM",
"confidentialityImpact": "NONE",
"integrityImpact": "NONE",
"privilegesRequired": "LOW",
"scope": "UNCHANGED",
"userInteraction": "NONE",
"vectorString": "CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H",
"version": "3.1"
},
"format": "CVSS",
"scenarios": [
{
"lang": "en",
"value": "GENERAL"
}
]
},
{
"cvssV4_0": {
"Automatable": "YES",
"Recovery": "USER",
"Safety": "NOT_DEFINED",
"attackComplexity": "LOW",
"attackRequirements": "NONE",
"attackVector": "NETWORK",
"baseScore": 7.1,
"baseSeverity": "HIGH",
"privilegesRequired": "LOW",
"providerUrgency": "NOT_DEFINED",
"subAvailabilityImpact": "LOW",
"subConfidentialityImpact": "NONE",
"subIntegrityImpact": "NONE",
"userInteraction": "NONE",
"valueDensity": "NOT_DEFINED",
"vectorString": "CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:L/AU:Y/R:U/RE:M",
"version": "4.0",
"vulnAvailabilityImpact": "HIGH",
"vulnConfidentialityImpact": "NONE",
"vulnIntegrityImpact": "NONE",
"vulnerabilityResponseEffort": "MODERATE"
},
"format": "CVSS",
"scenarios": [
{
"lang": "en",
"value": "GENERAL"
}
]
}
],
"problemTypes": [
{
"descriptions": [
{
"cweId": "CWE-686",
"description": "CWE-686 Function Call With Incorrect Argument Type",
"lang": "en",
"type": "CWE"
}
]
}
],
"providerMetadata": {
"dateUpdated": "2026-04-09T21:36:13.503Z",
"orgId": "8cbe9d5a-a066-4c94-8978-4b15efeae968",
"shortName": "juniper"
},
"references": [
{
"tags": [
"vendor-advisory"
],
"url": "https://kb.juniper.net/JSA107870"
}
],
"solutions": [
{
"lang": "en",
"supportingMedia": [
{
"base64": false,
"type": "text/html",
"value": "The following software releases have been updated to resolve this specific issue: 22.4R3-S9-EVO, 23.2R2-S6-EVO, 23.4R2-S7-EVO, 24.2R2-S4-EVO, 24.4R2-S2-EVO, 25.2R1-S2-EVO, 25.2R2-EVO, 25.4R1-EVO, and all subsequent releases."
}
],
"value": "The following software releases have been updated to resolve this specific issue: 22.4R3-S9-EVO, 23.2R2-S6-EVO, 23.4R2-S7-EVO, 24.2R2-S4-EVO, 24.4R2-S2-EVO, 25.2R1-S2-EVO, 25.2R2-EVO, 25.4R1-EVO, and all subsequent releases."
}
],
"source": {
"advisory": "JSA107870",
"defect": [
"1894533"
],
"discovery": "USER"
},
"title": "Junos OS Evolved: PTX Series: If SRTE tunnels provisioned via PCEP are present and specific gRPC queries are received evo-aftmand crashes",
"workarounds": [
{
"lang": "en",
"supportingMedia": [
{
"base64": false,
"type": "text/html",
"value": "Configure the Originator ASN with a value of less than 65,535 (16-bit ASN)."
}
],
"value": "Configure the Originator ASN with a value of less than 65,535 (16-bit ASN)."
}
],
"x_generator": {
"engine": "Vulnogram 0.1.0-dev"
}
}
},
"cveMetadata": {
"assignerOrgId": "8cbe9d5a-a066-4c94-8978-4b15efeae968",
"assignerShortName": "juniper",
"cveId": "CVE-2026-33783",
"datePublished": "2026-04-09T21:36:13.503Z",
"dateReserved": "2026-03-23T19:46:13.669Z",
"dateUpdated": "2026-04-13T18:06:19.144Z",
"state": "PUBLISHED"
},
"dataType": "CVE_RECORD",
"dataVersion": "5.2"
}
Loading…
Loading…
Sightings
| Author | Source | Type | Date |
|---|
Nomenclature
- Seen: The vulnerability was mentioned, discussed, or seen somewhere by the user.
- Confirmed: The vulnerability is confirmed from an analyst perspective.
- Published Proof of Concept: A public proof of concept is available for this vulnerability.
- Exploited: This vulnerability was exploited and seen by the user reporting the sighting.
- Patched: This vulnerability was successfully patched by the user reporting the sighting.
- Not exploited: This vulnerability was not exploited or seen by the user reporting the sighting.
- Not confirmed: The user expresses doubt about the veracity of the vulnerability.
- Not patched: This vulnerability was not successfully patched by the user reporting the sighting.
Loading…
Loading…