CVE-2026-113380 Signal RingRTC - Denial of Service

Signal RingRTC library < 2.72.0 contains a denial of service caused by a peer saturating a call's FSM queue, letting attackers interfere with local hangup and call teardown, exploit requires a malicious peer.

CVSS base score 9.3 /10
Critical
CISA KEV
Not listed
Public exploit
None known
Authentication
Not required
View the NVD record ↗

Details

Type
Denial of Service
Impact
Denial Of Service
CVSS 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/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:P/AU:X/R:X/V:X/RE:X/U:X
Published
20 October 2026
Updated
20 October 2026
Weakness
CWE-754

Vendor fix

Update to version 2.72.0 or later.

Patching closes this CVE. It does not tell you which of your systems run the affected version, or what else is exposed alongside them.

References

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