{"id":"CVE-2026-122126","title":"reSIProcate reTurn client through 1.14.0 Heap Buffer Overflow via TurnTcpSocket","summary":"reSIProcate reTurn client through 1.14.0 contains a heap buffer overflow in TurnTcpSocket::handleReadHeader(), which TurnTlsSocket inherits, that allows malicious TURN servers or on-path attackers to overwrite memory via oversized frame …","severity":"medium","cvss":5.9,"cvssVector":"CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:H","cvssSource":"cna","cwe":["CWE-122"],"vendor":"resiprocate","product":"resiprocate","affected":["resiprocate <= 1.14.0"],"ssvc":{"exploitation":"none","automatable":"no","technicalImpact":"partial","timestamp":"2026-11-05T19:34:00.602010Z"},"published":"2026-11-04","updated":"2026-11-05","sourceUpdated":"2026-11-05T19:34:17.666Z","source":"CVEORG","sourceUrl":"https://www.cve.org/CVERecord?id=CVE-2026-122126","references":[{"url":"https://github.com/resiprocate/resiprocate/pull/496","label":"Pull Request #496"},{"url":"https://github.com/resiprocate/resiprocate/commit/5bb559fd96298073cab369fdfa610f981fb01e95","label":"Patch Commit"},{"url":"https://github.com/resiprocate/resiprocate"},{"url":"https://github.com/resiprocate/resiprocate/blob/resiprocate-1.14.0/reTurn/client/TurnTcpSocket.cxx#L124-L147"},{"url":"https://www.vulncheck.com/advisories/resiprocate-return-client-through-1.14.0-heap-buffer-overflow-via-turntcpsocket","label":"VulnCheck Advisory: reSIProcate reTurn client through 1.14.0 Heap Buffer Overflow via TurnTcpSocket"}],"tags":["cve.org"],"epss":0.00369,"epssPercentile":0.30934,"ingestedAt":"2026-11-05T22:38:31.551Z","slug":"CVE-2026-122126","body":"## Overview\n\nreSIProcate reTurn client through 1.14.0 contains a heap buffer overflow in TurnTcpSocket::handleReadHeader(), which TurnTlsSocket inherits, that allows malicious TURN servers or on-path attackers to overwrite memory via oversized frame lengths. Attackers can send STUN or ChannelData frames declaring up to 65535 bytes, writing roughly 57 KB past the fixed 8192-byte mReadBuffer and crashing the client. Only the synchronous TCP and TLS client is affected; the asynchronous client (TurnAsyncSocket) and the reTurn server are not.\n\n## Affected\n\n- `resiprocate <= 1.14.0`\n\n## Remediation\n\nRefer to the linked advisories for vendor-supplied fixes and affected version ranges.","depth":"sunlit","depthScore":33,"depthScoreParts":{"impact":32.5,"likelihood":0.1,"exploitation":0,"ransomware":0},"changes":[]}