
Signal fixes RingRTC flaw that can block hang-ups (CVE-2026-113380)
A remote peer can flood the call state machine so the microphone and possibly the camera stay on.
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A remote peer can flood the call state machine so the microphone and possibly the camera stay on.

CVE-2026-113380, scored CVSS 4.0 9.3, lets a call peer delay teardown so audio and possibly video continue; no in-the-wild use is known.
CVE-2026-113380, CVSS 9.3, affects RingRTC before 2.72.0; a conceptual proof of concept exists and CISA KEV does not list it.

Fixed builds are 156.0.8078.47 on Linux and 156.0.8078.47 or .48 on Windows and Mac; Google does not report active attacks.

Linux builds are 156.0.8078.47 and Windows and macOS builds are 156.0.8078.47 or .48; exploitation is not addressed.
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