{"id":"CVE-2026-125402","aliases":[],"url":"https://o3.security/vulnerability/CVE-2026-125402","summary":"Ettercap through 0.8.4.1 contains a heap out-of-bounds read vulnerability in sslw_get_clienthello_sni() in src/ec_sslwrap.c that trusts the unchecked 16-bit SNI length field. Network-adjacent…","details":"Ettercap through 0.8.4.1 contains a heap out-of-bounds read vulnerability in sslw_get_clienthello_sni() in src/ec_sslwrap.c that trusts the unchecked 16-bit SNI length field. Network-adjacent attackers can send crafted TLS ClientHello messages during SSL interception to leak up to 64 KB of heap memory upstream or crash Ettercap.","published":"2026-11-10T00:17:14.703","modified":"2026-11-10T00:17:14.703","cvss":{"score":8.1,"severity":"HIGH","vector":"CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:H"},"epss":null,"cisaKev":null,"exploitsKnown":null,"affectedPackages":[],"fix":{"url":"https://github.com/Ettercap/ettercap/commit/1d8badb713579419a29a494bb463a1af59707e98","label":"Ettercap/ettercap@1d8badb"},"references":[{"type":"WEB","url":"https://github.com/Ettercap/ettercap/blob/v0.8.4.1/src/ec_sslwrap.c#L589-L604"},{"type":"WEB","url":"https://github.com/Ettercap/ettercap/commit/1d8badb713579419a29a494bb463a1af59707e98"},{"type":"WEB","url":"https://github.com/Ettercap/ettercap/pull/1330"},{"type":"WEB","url":"https://github.com/Ettercap/ettercap/security/advisories/GHSA-v48w-7cvh-c7f4"},{"type":"WEB","url":"https://www.vulncheck.com/advisories/ettercap-through-0.8.4.1-heap-out-of-bounds-read-via-tls-sni-parsing"}],"provenance":{"sources":["OSV.dev","NVD","FIRST.org (EPSS)"],"lastVerified":"2026-11-10T00:17:14.703"}}