Peer Interaction Issue in RingRTC Library by Signal
CVE-2026-113380

9.3CRITICAL

Key Information:

Vendor

Signal

Status
Ringrtc
Vendor
CVE Published:
20 October 2026

What is CVE-2026-113380?

The RingRTC library prior to version 2.72.0 is susceptible to a peer interaction issue where a peer can saturate the call's finite state machine (FSM) queue. This causes a disruption that affects the ability of a local participant to terminate the call, which may impact both audio and video tracks, leading to potential misuse in communication scenarios.

Affected Version(s)

RingRTC 0 < 2.72.0

References

https://github.com/signalapp/ringrtc/commit/4b1b6fa53c9f3...
https://github.com/signalapp/ringrtc/compare/v2.71.0...v2...

CVSS V4

Score:
9.3
Severity:
CRITICAL
Confidentiality:
High
Integrity:
High
Availability:
None
Attack Vector:
Network
Attack Complexity:
Low
Attack Required:
None
Privileges Required:
Undefined
User Interaction:
Unknown

Timeline

  • Vulnerability published

  • Vulnerability Reserved

.