Critical severity · published Oct 20, 2026
CVE-2026-113380
In the RingRTC library before 2.72.0 for Signal, a peer that saturates a call's FSM queue can interfere with the ability of a local hangup to tear the call (with its audio and…
9.3
CVSS
0.9%
EPSS
No
On KEV
Description
In the RingRTC library before 2.72.0 for Signal, a peer that saturates a call's FSM queue can interfere with the ability of a local hangup to tear the call (with its audio and perhaps also video track) down.
Exploitation
Is it being used?
Exploit prediction (EPSS)0.9% · higher than 59% of CVEs
Exploited in the wildNo evidence yet
CISA KEVNot listed
Ransomware campaign useNot known
Affected products
Which versions
RI
RingRTC · Signal
before 2.72.0 · source: vendor
In the news
VulnerabilityCritical
Signal Vulnerability Could Keep Calls Alive After Users Hang Up
A critical Signal flaw could keep calls active after hang-up, exposing microphone or camera. Update to a fixed version immediately. A critical vulnerability, tracked as CVE-2026-113380 (CVSS score 9.3 of 10), in Signal ’s calling library could allow a malicious caller to interfere with call termination, potentially leaving the victim’s microphone and camera active after […]
Oct 22, 2026·Security Affairs
References
NVD
https://nvd.nist.gov/vuln/detail/CVE-2026-113380
CVE.org
https://www.cve.org/CVERecord?id=CVE-2026-113380
github.com
https://github.com/signalapp/ringrtc/commit/4b1b6fa53c9f30c87c8ea78e44675d4a13e1e4d3
github.com
https://github.com/signalapp/ringrtc/compare/v2.71.0...v2.72.0
github.com
https://github.com/Imahian/Notes/tree/main/docs/CVEs/CVE-2026-113380