{"id":"CVE-2026-12413","aliases":[],"url":"https://o3.security/vulnerability/CVE-2026-12413","summary":null,"details":"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":"2026-07-02T22:16:42.517Z","modified":"2026-07-27T15:59:43.389048469Z","cvss":{"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"},"epss":null,"cisaKev":null,"exploitsKnown":0,"affectedPackages":[],"fix":null,"references":[{"type":"ADVISORY","url":"https://libreswan.org/security/CVE-2026-12413/"},{"type":"ADVISORY","url":"https://libreswan.org/security/CVE-2026-12413/CVE-2026-12413.txt"}],"provenance":{"sources":["OSV.dev","FIRST.org (EPSS)"],"lastVerified":"2026-07-27T15:59:43.389048469Z"}}