{"affected":[{"defaultStatus":"unaffected","ecosystem":"github","packageName":"Ettercap/ettercap","product":"ettercap","source":"CNA: VulnCheck","vendor":"Ettercap","versions":[{"lessThanOrEqual":"0.8.4.1","status":"affected","version":"0","versionType":"custom"}]}],"cveId":"CVE-2026-125402","cwes":["CWE-125"],"description":"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.","epss":null,"exploits":[],"kev":null,"metrics":[{"score":7.2,"severity":"high","source":"CNA: VulnCheck","vector":"CVSS:4.0/AV:A/AC:L/AT:N/PR:N/UI:N/VC:H/VI:N/VA:H/SC:N/SI:N/SA:N","version":"4.0"},{"score":8.1,"severity":"high","source":"CNA: VulnCheck","vector":"CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:H","version":"3.1"}],"modifiedAt":1794266884231,"publishedAt":1794266884231,"references":[{"source":"CNA: VulnCheck","tags":["vendor-advisory"],"url":"https://github.com/Ettercap/ettercap/security/advisories/GHSA-v48w-7cvh-c7f4"},{"source":"CNA: VulnCheck","tags":["patch"],"url":"https://github.com/Ettercap/ettercap/commit/1d8badb713579419a29a494bb463a1af59707e98"},{"source":"CNA: VulnCheck","tags":["issue-tracking","patch"],"url":"https://github.com/Ettercap/ettercap/pull/1330"},{"source":"CNA: VulnCheck","tags":["technical-description"],"url":"https://github.com/Ettercap/ettercap/blob/v0.8.4.1/src/ec_sslwrap.c#L589-L604"},{"source":"CNA: VulnCheck","tags":["third-party-advisory"],"url":"https://www.vulncheck.com/advisories/ettercap-through-0.8.4.1-heap-out-of-bounds-read-via-tls-sni-parsing"}],"remediation":[{"kind":"fix","source":"CNA: VulnCheck","text":"The reporting source identifies this reference as a patch. Check the advisory for affected versions and supported release branches.","url":"https://github.com/Ettercap/ettercap/commit/1d8badb713579419a29a494bb463a1af59707e98"},{"kind":"fix","source":"CNA: VulnCheck","text":"The reporting source identifies this reference as a patch. Check the advisory for affected versions and supported release branches.","url":"https://github.com/Ettercap/ettercap/pull/1330"}],"revision":"fcc4dcb65bde839bcc74de35308985fd3da18c5b18c891b5b3e634b291475bad","sources":[{"modifiedAt":1794266884231,"name":"CNA: VulnCheck","retrievedAt":1794269369429,"url":"https://www.cve.org/CVERecord?id=CVE-2026-125402"}],"ssvc":null,"status":"published","title":"Ettercap through 0.8.4.1 Heap Out-of-Bounds Read via TLS SNI Parsing","updatedAt":1794269369429}