{"id":"CVE-2026-12413","url":"https://www.cyber-defence.io/tools/cve/CVE-2026-12413","generatedAt":"2026-10-28T11:54:32.733Z","title":"An invalidly formatted IKEv2 fragment causes the Libreswan pluto daemon to crash and restart.","description":"An invalidly formatted IKEv2 fragment causes the Libreswan pluto daemon to crash and restart. Continued exploitation would cause a denial of service. The function reassemble_v2_incoming_fragments() would ignore unknown outer payloads but still store these in a fixed size array msg_digest.digest[PAYLIMIT]. An off-by-one error in the assertion PASSERT(logger, md->digest_roof < elemsof(md->digest)) causes the daemon to abort. No remote code execution is possible. Any configuration that allows IKEv2 connections that do not set fragmentation=no are vulnerable. IKEv1 is not affected.","published":"2026-07-02T22:16:43.000Z","lastModified":"2026-10-25T21:10:01.000Z","status":"Analyzed","sourceIdentifier":"d42dc95b-23f1-4e06-9076-20753a0fb0df","cvss":{"version":"3.1","score":7.5,"severity":"HIGH","vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H"},"cwe":["CWE-193","CWE-617"],"affected":["libreswan/libreswan"],"epss":{"score":0.00598,"percentile":0.48409,"date":"2026-10-27","history":[]},"kev":{"listed":false},"exploits":{"count":0,"verified":false,"firstPublished":null,"source":"Exploit-DB (https://gitlab.com/exploit-database/exploitdb)","entries":[]},"verdict":{"level":"high","text":"High impact if exploited, but EPSS currently rates exploitation as unlikely (0.60%). Schedule it in the normal patch cycle and watch for a rise in EPSS or a public exploit."},"changes":[],"references":[{"url":"https://libreswan.org/security/CVE-2026-12413/","tags":["Vendor Advisory"],"source":"d42dc95b-23f1-4e06-9076-20753a0fb0df"},{"url":"https://libreswan.org/security/CVE-2026-12413/CVE-2026-12413.txt","tags":["Vendor Advisory","Mitigation"],"source":"d42dc95b-23f1-4e06-9076-20753a0fb0df"}],"sources":{"nvd":"https://nvd.nist.gov/vuln/detail/CVE-2026-12413","epss":"https://www.first.org/epss/","kev":"https://www.cisa.gov/known-exploited-vulnerabilities-catalog","exploitdb":"https://www.exploit-db.com/"},"licence":"CC BY 4.0 — link back to the CVE Explorer if you publish the results; upstream data remains subject to its own terms."}