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CVE-2026-113380

Critical9.3

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.

CVSS
9.3v4.0
EPSS (exploit probability)
0.3%24th pct
CISA KEV
Not listed

EPSS trendFIRST daily scores, last 90 days

FIRST EPSS held steady from 0.3% on 2026-10-20 to 0.3% on 2026-10-22, ranging 0.3%–0.3% across 3 daily scores.
2026-10-20 → 2026-10-22 · 3 days · 0.3%–0.3%
Daily values
FIRST EPSS daily scores for this CVE
Score dateEPSSPercentile
2026-10-220.3%23.9%
2026-10-210.3%23.8%
2026-10-200.3%20.0%

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

Learn

Why it happened and what stops it

The weakness (CWE)

Coverage1 article

References

Facts sourced from NVD, FIRST EPSS, and CISA KEV. Last synced 2026-10-23 10:42 UTC.

  • CVSS & description: NVD 2.0, fetched 2026-10-23 10:42 UTC
  • EPSS: FIRST EPSS, fetched 2026-10-23 10:42 UTC; score date 2026-10-22
  • KEV: CISA KEV, fetched 2026-10-23 10:42 UTC