CVE-2026-33775 (GCVE-0-2026-33775)

Vulnerability from cvelistv5 – Published: 2026-04-09 21:30 – Updated: 2026-04-13 18:06
VLAI?
Title
Junos OS: MX Series: Mismatch between configured and received packet types causes memory leak in bbe-smgd
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.
Severity ?
6.5 (Medium)
CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
7.1 (High)
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
CWE
  • CWE-401 - Missing Release of Memory after Effective Lifetime
Assigner
References
Impacted products
Vendor Product Version
Juniper Networks Junos OS Affected: 0 , < 22.4R3-S8 (semver)
Affected: 23.2 , < 23.2R2-S5 (semver)
Affected: 23.4 , < 23.4R2-S6 (semver)
Affected: 24.2 , < 24.2R2-S2 (semver)
Affected: 24.4 , < 24.4R2 (semver)
Affected: 25.2 , < 25.2R2 (semver)
Create a notification for this product.
Date Public ?
2026-04-08 16:00
Show details on NVD website
To clipboard 

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      "containers": "{\"adp\": [{\"title\": \"CISA ADP Vulnrichment\", \"metrics\": [{\"other\": {\"type\": \"ssvc\", \"content\": {\"id\": \"CVE-2026-33775\", \"role\": \"CISA Coordinator\", \"options\": [{\"Exploitation\": \"none\"}, {\"Automatable\": \"no\"}, {\"Technical Impact\": \"partial\"}], \"version\": \"2.0.3\", \"timestamp\": \"2026-04-13T17:40:06.427057Z\"}}}], \"providerMetadata\": {\"orgId\": \"134c704f-9b21-4f2e-91b3-4a467353bcc0\", \"shortName\": \"CISA-ADP\", \"dateUpdated\": \"2026-04-13T17:58:37.146Z\"}}], \"cna\": {\"title\": \"Junos OS: MX Series: Mismatch between configured and received packet types causes memory leak in bbe-smgd\", \"source\": {\"defect\": [\"1853434\"], \"advisory\": \"JSA107821\", \"discovery\": \"USER\"}, \"metrics\": [{\"format\": \"CVSS\", \"cvssV3_1\": {\"scope\": \"UNCHANGED\", \"version\": \"3.1\", \"baseScore\": 6.5, \"attackVector\": \"ADJACENT_NETWORK\", \"baseSeverity\": \"MEDIUM\", \"vectorString\": \"CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H\", \"integrityImpact\": \"NONE\", \"userInteraction\": \"NONE\", \"attackComplexity\": \"LOW\", \"availabilityImpact\": \"HIGH\", \"privilegesRequired\": \"NONE\", \"confidentialityImpact\": \"NONE\"}, \"scenarios\": [{\"lang\": \"en\", \"value\": \"GENERAL\"}]}, {\"format\": \"CVSS\", \"cvssV4_0\": {\"Safety\": \"NOT_DEFINED\", \"version\": \"4.0\", \"Recovery\": \"NOT_DEFINED\", \"baseScore\": 7.1, \"Automatable\": \"YES\", \"attackVector\": \"ADJACENT\", \"baseSeverity\": \"HIGH\", \"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\", \"providerUrgency\": \"NOT_DEFINED\", \"userInteraction\": \"NONE\", \"attackComplexity\": \"LOW\", \"attackRequirements\": \"NONE\", \"privilegesRequired\": \"NONE\", \"subIntegrityImpact\": \"NONE\", \"vulnIntegrityImpact\": \"NONE\", \"subAvailabilityImpact\": \"LOW\", \"vulnAvailabilityImpact\": \"HIGH\", \"subConfidentialityImpact\": \"NONE\", \"vulnConfidentialityImpact\": \"NONE\", \"vulnerabilityResponseEffort\": \"MODERATE\"}, \"scenarios\": [{\"lang\": \"en\", \"value\": \"GENERAL\"}]}], \"affected\": [{\"vendor\": \"Juniper Networks\", \"product\": \"Junos OS\", \"versions\": [{\"status\": \"affected\", \"version\": \"0\", \"lessThan\": \"22.4R3-S8\", \"versionType\": \"semver\"}, {\"status\": \"affected\", \"version\": \"23.2\", \"lessThan\": \"23.2R2-S5\", \"versionType\": \"semver\"}, {\"status\": \"affected\", \"version\": \"23.4\", \"lessThan\": \"23.4R2-S6\", \"versionType\": \"semver\"}, {\"status\": \"affected\", \"version\": \"24.2\", \"lessThan\": \"24.2R2-S2\", \"versionType\": \"semver\"}, {\"status\": \"affected\", \"version\": \"24.4\", \"lessThan\": \"24.4R2\", \"versionType\": \"semver\"}, {\"status\": \"affected\", \"version\": \"25.2\", \"lessThan\": \"25.2R2\", \"versionType\": \"semver\"}], \"platforms\": [\"MX Series\"], \"defaultStatus\": \"unaffected\"}], \"exploits\": [{\"lang\": \"en\", \"value\": \"Juniper SIRT is not aware of any malicious exploitation of this vulnerability.\", \"supportingMedia\": [{\"type\": \"text/html\", \"value\": \"Juniper SIRT is not aware of any malicious exploitation of this vulnerability.\", \"base64\": false}]}], \"solutions\": [{\"lang\": \"en\", \"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.\", \"supportingMedia\": [{\"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.\", \"base64\": false}]}], \"datePublic\": \"2026-04-08T16:00:00.000Z\", \"references\": [{\"url\": \"https://kb.juniper.net/JSA107821\", \"tags\": [\"vendor-advisory\"]}], \"workarounds\": [{\"lang\": \"en\", \"value\": \"There are no known workarounds for this issue.\", \"supportingMedia\": [{\"type\": \"text/html\", \"value\": \"There are no known workarounds for this issue.\", \"base64\": false}]}], \"x_generator\": {\"engine\": \"Vulnogram 0.1.0-dev\"}, \"descriptions\": [{\"lang\": \"en\", \"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.\", \"supportingMedia\": [{\"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\", \"base64\": false}]}], \"problemTypes\": [{\"descriptions\": [{\"lang\": \"en\", \"type\": \"CWE\", \"cweId\": \"CWE-401\", \"description\": \"CWE-401 Missing Release of Memory after Effective Lifetime\"}]}], \"configurations\": [{\"lang\": \"en\", \"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.\", \"supportingMedia\": [{\"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\", \"base64\": false}]}], \"providerMetadata\": {\"orgId\": \"8cbe9d5a-a066-4c94-8978-4b15efeae968\", \"shortName\": \"juniper\", \"dateUpdated\": \"2026-04-09T21:30:08.528Z\"}}}",
      "cveMetadata": "{\"cveId\": \"CVE-2026-33775\", \"state\": \"PUBLISHED\", \"dateUpdated\": \"2026-04-13T18:06:19.695Z\", \"dateReserved\": \"2026-03-23T19:46:13.668Z\", \"assignerOrgId\": \"8cbe9d5a-a066-4c94-8978-4b15efeae968\", \"datePublished\": \"2026-04-09T21:30:08.528Z\", \"assignerShortName\": \"juniper\"}",
      "dataType": "CVE_RECORD",
      "dataVersion": "5.2"
    }
  }
}


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Sightings

Author Source Type Date

Nomenclature

  • Seen: The vulnerability was mentioned, discussed, or observed by the user.
  • Confirmed: The vulnerability has been validated from an analyst's perspective.
  • Published Proof of Concept: A public proof of concept is available for this vulnerability.
  • Exploited: The vulnerability was observed as exploited by the user who reported the sighting.
  • Patched: The vulnerability was observed as successfully patched by the user who reported the sighting.
  • Not exploited: The vulnerability was not observed as exploited by the user who reported the sighting.
  • Not confirmed: The user expressed doubt about the validity of the vulnerability.
  • Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.



Detection rules are retrieved from Rulezet.