CVE-2026-102081

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If the memory is exhausted traffic processing will be impacted.<br><br>Use the CLI command&nbsp;<tt>show security monitoring</tt> to monitor the memory utilization of the PFEs on the FPCs.<br><p><br>This issue affects Junos OS on SRX Series and MX Series:<br></p><ul><li>23.4 versions from 23.4R2-S3 before 23.4R2-S7;</li><li>24.2 versions from 24.2R2 before 24.2R2-S3;</li><li>24.4 versions before 24.4R2-S3;</li><li>25.2 versions before 25.2R1-S2, 25.2R2.</li></ul><br><p></p>"}], "value": "A Missing Release of Memory after Effective Lifetime vulnerability in the packet forwarding engine (PFE) of Juniper Networks Junos OS on SRX Series allows an unauthenticated, network-based attacker to cause a complete Denial-of-Service (DoS).\n\n\n\nOn SRX4000 Series, and SRX5000 Series with SPC3, and MX Series with SPC3, when one or more specific application services like ALGs, IDP/DPI, APPID, SECINTEL, AAMW or AppQoE are configured, a high connections per second churn will cause PFE memory to leak. If the memory is exhausted traffic processing will be impacted.\n\nUse the CLI command\u00a0show security monitoring to monitor the memory utilization of the PFEs on the FPCs.\n\nThis issue affects Junos OS on SRX Series and MX Series:\n\n\n * 23.4 versions from 23.4R2-S3 before 23.4R2-S7;\n * 24.2 versions from 24.2R2 before 24.2R2-S3;\n * 24.4 versions before 24.4R2-S3;\n * 25.2 versions before 25.2R1-S2, 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": "NETWORK", "availabilityImpact": "HIGH", "baseScore": 7.5, "baseSeverity": "HIGH", "confidentialityImpact": "NONE", "integrityImpact": "NONE", "privilegesRequired": "NONE", "scope": "UNCHANGED", "userInteraction": "NONE", "vectorString": "CVSS:3.1/AV:N/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": "USER", "Safety": "NOT_DEFINED", "attackComplexity": "LOW", "attackRequirements": "NONE", "attackVector": "NETWORK", "baseScore": 8.7, "baseSeverity": "HIGH", "privilegesRequired": "NONE", "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:N/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-401", "description": "CWE-401 Improper Release of Memory Before Removing Last Reference", "lang": "en", "type": "CWE"}]}], "providerMetadata": {"orgId": "8cbe9d5a-a066-4c94-8978-4b15efeae968", "shortName": "juniper", "dateUpdated": "2026-10-14T16:26:14.921Z"}, "references": [{"tags": ["vendor-advisory"], "url": "https://supportportal.juniper.net/JSA112177"}], "solutions": [{"lang": "en", "supportingMedia": [{"base64": false, "type": "text/html", "value": "The following software releases have been updated to resolve this specific issue:\n\nJunos OS: 23.4R2-S7, 24.2R2-S3, 24.4R2-S3, 25.2R1-S2, 25.2R2, 25.4R1, and all subsequent releases."}], "value": "The following software releases have been updated to resolve this specific issue:\n\nJunos OS: 23.4R2-S7, 24.2R2-S3, 24.4R2-S3, 25.2R1-S2, 25.2R2, 25.4R1, and all subsequent releases."}], "source": {"advisory": "JSA112177", "defect": ["1895420"], "discovery": "USER"}, "title": "Junos OS: SRX4000 Series, SRX5000 Series and MX Series with SPC3: With application services configured, high session churn causes memory leak which will ultimately impact traffic", "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"}}, "adp": [{"metrics": [{"other": {"type": "ssvc", "content": {"id": "CVE-2026-102081", "role": "CISA Coordinator", "options": [{"Exploitation": "none"}, {"Automatable": "yes"}, {"Technical Impact": "partial"}], "version": "2.0.3", "timestamp": "2026-10-14T20:38:49.370441Z"}}}], "title": "CISA ADP Vulnrichment", "providerMetadata": {"orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "shortName": "CISA-ADP", "dateUpdated": "2026-10-14T20:46:19.992Z"}}]}}

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If the memory is exhausted traffic processing will be impacted.\n\nUse the CLI command\u00a0show security monitoring to monitor the memory utilization of the PFEs on the FPCs.\n\nThis issue affects Junos OS on SRX Series and MX Series:\n\n\n * 23.4 versions from 23.4R2-S3 before 23.4R2-S7;\n * 24.2 versions from 24.2R2 before 24.2R2-S3;\n * 24.4 versions before 24.4R2-S3;\n * 25.2 versions before 25.2R1-S2, 25.2R2.", "supportingMedia": [{"type": "text/html", "value": "<span style=\"background-color: rgb(255, 255, 255);\">A Missing Release of Memory after Effective Lifetime vulnerability in the packet forwarding engine (PFE) of Juniper Networks Junos OS on SRX Series allows an unauthenticated, network-based attacker to cause a complete Denial-of-Service (DoS).</span><br>\n\n<br>On SRX4000 Series, and SRX5000 Series with SPC3, and MX Series with SPC3, when one or more specific application services like ALGs, IDP/DPI, APPID, SECINTEL, AAMW or AppQoE are configured, a high connections per second churn will cause PFE memory to leak. 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{}

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