CVE-2026-122126

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{"bugzilla": {"description": "resiprocate: resiprocate: Denial of service via heap buffer overflow in reTurn client", "id": "2567708", "url": "https://bugzilla.redhat.com/show_bug.cgi?id=2567708"}, "csaw": false, "cvss3": {"cvss3_base_score": "5.9", "cvss3_scoring_vector": "CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:H", "status": "draft"}, "cwe": "CWE-787", "details": ["reSIProcate reTurn client through 1.14.0 contains a heap buffer overflow in TurnTcpSocket::handleReadHeader() that allows malicious TURN servers 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.", "A flaw was found in reSIProcate. This vulnerability allows a malicious server or an on-path network attacker to cause a denial of service (DoS) by crashing the reTurn client. By sending oversized network frames that exceed the allocated buffer size, an attacker triggers a heap-based buffer overflow that overwrites client memory and terminates the application."], "mitigation": {"lang": "en:us", "value": "Mitigation for this issue is either not available or the currently available options do not meet the Red Hat Product Security criteria comprising ease of use and deployment, applicability to widespread installation base, or stability."}, "name": "CVE-2026-122126", "public_date": "2026-11-04T20:36:48Z", "references": ["https://www.cve.org/CVERecord?id=CVE-2026-122126\nhttps://nvd.nist.gov/vuln/detail/CVE-2026-122126\nhttps://github.com/resiprocate/resiprocate\nhttps://github.com/resiprocate/resiprocate/blob/resiprocate-1.14.0/reTurn/client/TurnTcpSocket.cxx#L124-L147\nhttps://github.com/resiprocate/resiprocate/commit/5bb559fd96298073cab369fdfa610f981fb01e95\nhttps://github.com/resiprocate/resiprocate/pull/496\nhttps://www.vulncheck.com/advisories/resiprocate-return-client-through-1.14.0-heap-buffer-overflow-via-turntcpsocket"], "statement": "This vulnerability is rated as Moderate because successful exploitation requires either a rogue TURN server or an active on-path attacker intercepting the communication channel, which restricts the potential impact to a client-side denial of service. Red Hat enterprise products do not ship the affected reTurn client library, and typical deployments are therefore not exposed. Additionally, asynchronous client implementations and reTurn server components are unaffected by this defect.", "threat_severity": "Moderate"}

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