CVE-2026-113380

Denial of Service via FSM Queue Saturation in RingRTC

Published Oct 20, 2026 CVSS 4.0 · 9.3 Critical EPSS < 1% KEV · Not listed
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.

Remediation

No solution or workaround provided in the CVE record

Tracking

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Advisories

No advisories available
History
Type Values Removed Values Added
First Time appeared Signal
Signal ringrtc
Vendors & Products Signal
Signal ringrtc
Type Values Removed Values Added
Metrics ssvc

{'options': {'Automatable': 'no', 'Exploitation': 'none', 'Technical Impact': 'total'}, 'version': '2.0.3'}

Type Values Removed Values Added
Title Denial of Service via FSM Queue Saturation in RingRTC
Type Values Removed Values Added
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.
Weaknesses CWE-754
References
Metrics cvssV4_0

{'score': 9.3, 'vector': 'CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:P/VC:H/VI:H/VA:N/SC:H/SI:N/SA:N/S:P'}

Weaknesses

Sources

Status
PUBLISHED
Assigner
mitre
Published
Updated
Oct 31, 2026, 2:55 PM
Reserved
Oct 20, 2026, 4:25 AM
Status
Awaiting Analysis
Published
Oct 20, 2026, 5:16 AM
Modified
Oct 31, 2026, 3:16 PM