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 ≤ |
{
"containers": {
"adp": [
{
"metrics": [
{
"other": {
"content": {
"id": "CVE-2026-33775",
"options": [
{
"Exploitation": "none"
},
{
"Automatable": "no"
},
{
"Technical Impact": "partial"
}
],
"role": "CISA Coordinator",
"timestamp": "2026-04-13T17:40:06.427057Z",
"version": "2.0.3"
},
"type": "ssvc"
}
}
],
"providerMetadata": {
"dateUpdated": "2026-04-13T18:06:19.695Z",
"orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
"shortName": "CISA-ADP"
},
"title": "CISA ADP Vulnrichment"
}
],
"cna": {
"affected": [
{
"defaultStatus": "unaffected",
"platforms": [
"MX Series"
],
"product": "Junos OS",
"vendor": "Juniper Networks",
"versions": [
{
"lessThan": "22.4R3-S8",
"status": "affected",
"version": "0",
"versionType": "semver"
},
{
"lessThan": "23.2R2-S5",
"status": "affected",
"version": "23.2",
"versionType": "semver"
},
{
"lessThan": "23.4R2-S6",
"status": "affected",
"version": "23.4",
"versionType": "semver"
},
{
"lessThan": "24.2R2-S2",
"status": "affected",
"version": "24.2",
"versionType": "semver"
},
{
"lessThan": "24.4R2",
"status": "affected",
"version": "24.4",
"versionType": "semver"
},
{
"lessThan": "25.2R2",
"status": "affected",
"version": "25.2",
"versionType": "semver"
}
]
}
],
"configurations": [
{
"lang": "en",
"supportingMedia": [
{
"base64": false,
"type": "text/html",
"value": "A system is only affected, when packet-types is configured as follows:\u003cbr\u003e\u003cbr\u003e\u003ctt\u003e\n\n\u003cspan style=\"background-color: rgb(255, 255, 255);\"\u003e[ interface \u0026lt;interface\u0026gt; \u003c/span\u003e\u003cspan style=\"background-color: rgb(255, 255, 255);\"\u003eauto-configure (\u003c/span\u003e\u003cspan style=\"background-color: rgb(255, 255, 255);\"\u003estacked-)vlan-ranges \u003c/span\u003e\u003cspan style=\"background-color: rgb(255, 255, 255);\"\u003edynamic-profile \u0026lt;profile-name\u0026gt; \u003c/span\u003e\u003cspan style=\"background-color: rgb(255, 255, 255);\"\u003eaccept \u0026lt;packet-type1\u0026gt; ]\u003cbr\u003e\u003c/span\u003e\u003c/tt\u003e\n\n\u003ctt\u003e\u003cbr\u003e\u003c/tt\u003ewhich allows packets of type 1 to be processed on receipt, but\u003cbr\u003e\u003cbr\u003e\u003ctt\u003e[ interfaces \u0026lt;interface\u0026gt;auto-configure (stacked-)vlan-ranges\u0026nbsp;authentication packet-types \u0026lt;packet-type2\u0026gt; ]\u003cbr\u003e\u003cbr\u003e\u003c/tt\u003eis a mismatch and doesn\u0027t require authentication for these packets.\u003cbr\u003e\u003cbr\u003e"
}
],
"value": "A system is only affected, when packet-types is configured as follows:\n\n\n\n[ interface \u003cinterface\u003e auto-configure (stacked-)vlan-ranges dynamic-profile \u003cprofile-name\u003e accept \u003cpacket-type1\u003e ]\n\n\n\nwhich allows packets of type 1 to be processed on receipt, but\n\n[ interfaces \u003cinterface\u003eauto-configure (stacked-)vlan-ranges\u00a0authentication packet-types \u003cpacket-type2\u003e ]\n\nis a mismatch and doesn\u0027t require authentication for these packets."
}
],
"datePublic": "2026-04-08T16:00:00.000Z",
"descriptions": [
{
"lang": "en",
"supportingMedia": [
{
"base64": false,
"type": "text/html",
"value": "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).\u003cbr\u003e\u003cbr\u003eIf the authentication packet-type option is configured and a received packet does not match that packet type, the memory leak occurs. When all memory \n\n\u003cspan style=\"background-color: rgb(255, 255, 255);\"\u003eavailable to bbe-smgd\u0026nbsp;\u003c/span\u003ehas been consumed, no new subscribers will be able to login.\u003cbr\u003e\u003cbr\u003eThe memory utilization of bbe-smgd can be monitored with the following show command:\u003cbr\u003e\u003cbr\u003e\u003ctt\u003euser@host\u0026gt; show system processes extensive | match bbe-smgd\u003c/tt\u003e\u003cbr\u003e\u003cbr\u003eThe below log message can be observed when this limit has been reached:\u003cbr\u003e\u003cbr\u003e\u003ctt\u003ebbesmgd[\u0026lt;PID\u0026gt;]: %DAEMON-3-SMD_DPROF_RSMON_ERROR: Resource unavailability, Reason: Daemon Heap Memory exhaustion\u003c/tt\u003e\u003cbr\u003e\u003cbr\u003e\u003cbr\u003eThis issue affects Junos OS on MX Series:\u003cbr\u003e\u003cul\u003e\u003cli\u003eall versions before 22.4R3-S8,\u003c/li\u003e\u003cli\u003e23.2 versions before 23.2R2-S5,\u003c/li\u003e\u003cli\u003e23.4 versions before 23.4R2-S6,\u003c/li\u003e\u003cli\u003e24.2 versions before 24.2R2-S2,\u003c/li\u003e\u003cli\u003e24.4 versions before 24.4R2,\u003c/li\u003e\u003cli\u003e25.2 versions before 25.2R2.\u003c/li\u003e\u003c/ul\u003e\u003cbr\u003e"
}
],
"value": "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).\n\nIf the authentication packet-type option is configured and a received packet does not match that packet type, the memory leak occurs. When all memory \n\navailable to bbe-smgd\u00a0has been consumed, no new subscribers will be able to login.\n\nThe memory utilization of bbe-smgd can be monitored with the following show command:\n\nuser@host\u003e show system processes extensive | match bbe-smgd\n\nThe below log message can be observed when this limit has been reached:\n\nbbesmgd[\u003cPID\u003e]: %DAEMON-3-SMD_DPROF_RSMON_ERROR: Resource unavailability, Reason: Daemon Heap Memory exhaustion\n\n\nThis issue affects Junos OS on MX Series:\n * all versions before 22.4R3-S8,\n * 23.2 versions before 23.2R2-S5,\n * 23.4 versions before 23.4R2-S6,\n * 24.2 versions before 24.2R2-S2,\n * 24.4 versions before 24.4R2,\n * 25.2 versions before 25.2R2."
}
],
"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": "ADJACENT_NETWORK",
"availabilityImpact": "HIGH",
"baseScore": 6.5,
"baseSeverity": "MEDIUM",
"confidentialityImpact": "NONE",
"integrityImpact": "NONE",
"privilegesRequired": "NONE",
"scope": "UNCHANGED",
"userInteraction": "NONE",
"vectorString": "CVSS:3.1/AV:A/AC:L/PR:N/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": "NOT_DEFINED",
"Safety": "NOT_DEFINED",
"attackComplexity": "LOW",
"attackRequirements": "NONE",
"attackVector": "ADJACENT",
"baseScore": 7.1,
"baseSeverity": "HIGH",
"privilegesRequired": "NONE",
"providerUrgency": "NOT_DEFINED",
"subAvailabilityImpact": "LOW",
"subConfidentialityImpact": "NONE",
"subIntegrityImpact": "NONE",
"userInteraction": "NONE",
"valueDensity": "NOT_DEFINED",
"vectorString": "CVSS:4.0/AV:A/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:L/AU:Y/RE:M",
"version": "4.0",
"vulnAvailabilityImpact": "HIGH",
"vulnConfidentialityImpact": "NONE",
"vulnIntegrityImpact": "NONE",
"vulnerabilityResponseEffort": "MODERATE"
},
"format": "CVSS",
"scenarios": [
{
"lang": "en",
"value": "GENERAL"
}
]
}
],
"problemTypes": [
{
"descriptions": [
{
"cweId": "CWE-401",
"description": "CWE-401 Missing Release of Memory after Effective Lifetime",
"lang": "en",
"type": "CWE"
}
]
}
],
"providerMetadata": {
"dateUpdated": "2026-04-09T21:30:08.528Z",
"orgId": "8cbe9d5a-a066-4c94-8978-4b15efeae968",
"shortName": "juniper"
},
"references": [
{
"tags": [
"vendor-advisory"
],
"url": "https://kb.juniper.net/JSA107821"
}
],
"solutions": [
{
"lang": "en",
"supportingMedia": [
{
"base64": false,
"type": "text/html",
"value": "The following software releases have been updated to resolve this specific issue: 22.4R3-S8, 23.2R2-S5, 23.4R2-S6, 24.2R2-S2, 24.4R2, 25.2R2, 25.4R1, and all subsequent releases."
}
],
"value": "The following software releases have been updated to resolve this specific issue: 22.4R3-S8, 23.2R2-S5, 23.4R2-S6, 24.2R2-S2, 24.4R2, 25.2R2, 25.4R1, and all subsequent releases."
}
],
"source": {
"advisory": "JSA107821",
"defect": [
"1853434"
],
"discovery": "USER"
},
"title": "Junos OS: MX Series: Mismatch between configured and received packet types causes memory leak in bbe-smgd",
"workarounds": [
{
"lang": "en",
"supportingMedia": [
{
"base64": false,
"type": "text/html",
"value": "There are no known workarounds for this issue."
}
],
"value": "There are no known workarounds for this issue."
}
],
"x_generator": {
"engine": "Vulnogram 0.1.0-dev"
}
}
},
"cveMetadata": {
"assignerOrgId": "8cbe9d5a-a066-4c94-8978-4b15efeae968",
"assignerShortName": "juniper",
"cveId": "CVE-2026-33775",
"datePublished": "2026-04-09T21:30:08.528Z",
"dateReserved": "2026-03-23T19:46:13.668Z",
"dateUpdated": "2026-04-13T18:06:19.695Z",
"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…