{"id":"CVE-2026-127029","aliases":[],"url":"https://o3.security/vulnerability/CVE-2026-127029","summary":"A flaw was found in freeradius's Extensible Authentication Protocol Method for Subscriber Identity Module (EAP-SIM) module. When handling authentication requests, the server copies…","details":"A flaw was found in freeradius's Extensible Authentication Protocol Method for Subscriber Identity Module (EAP-SIM) module. When handling authentication requests, the server copies a client-supplied identity into an internal structure without properly checking its length against a fixed-size buffer. An unauthenticated remote attacker can exploit this issue by sending specially crafted EAP-SIM messages, triggering a stack buffer overflow that crashes the service and results in a Denial of Service (DoS).","published":"2026-11-12T17:17:42.970","modified":"2026-11-12T17:17:43.107","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":null,"affectedPackages":[],"fix":{"url":"https://github.com/FreeRADIUS/freeradius-server/commit/064567a08f3b9d9b4863fab6060fafe296ac7de9","label":"FreeRADIUS/freeradius-server@064567a"},"references":[{"type":"WEB","url":"https://access.redhat.com/security/cve/CVE-2026-127029"},{"type":"WEB","url":"https://bugzilla.redhat.com/show_bug.cgi?id=2572339"},{"type":"WEB","url":"https://github.com/FreeRADIUS/freeradius-server/commit/064567a08f3b9d9b4863fab6060fafe296ac7de9"},{"type":"WEB","url":"https://github.com/FreeRADIUS/freeradius-server/commit/e415f818dcdf91626e5e7314b3a4f819ab11f572"}],"provenance":{"sources":["OSV.dev","NVD","FIRST.org (EPSS)"],"lastVerified":"2026-11-12T17:17:43.107"}}