CVE-2026-122126

reSIProcate reTurn client through 1.14.0 Heap Buffer Overflow via TurnTcpSocket

CVSS 4.0 8.2 HIGHCVSS 3.1 5.9 MEDIUMCheck source for fixed versionsKEV status unknown

Original advisory

cve-program · CVE-2026-122126

Published

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 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.

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Affected versions, risk and source history

Exploitation and risk

Source status

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Risk history

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Advisory history

3 saved versions

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5 Nov 2026 20:36:27 UTC