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CVE-2026-113380

Quick assessment

Affected
Signal RingRTC
Exploitation
No confirmed in-the-wild exploitation; assess based on exposure
Recommended action
Check the vendor advisory and references for a fixed version. If immediate upgrade is impossible, restrict exposure and increase monitoring.

在 Signal 所使用的 RingRTC 库 2.72.0 版本之前，存在一个漏洞：当某个对等端（peer）使呼叫的状态机（FSM）队列达到饱和时，会干扰本地挂断操作正常终止该呼叫（包括其音频轨道，可能还包括视频轨道）的能力。

CVSS 9.3 · Critical

Possible ATT&CK Techniques 1 AI

T1499 · Endpoint Denial of Service
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I. Basic Information for CVE-2026-113380

Vulnerability Information
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Vulnerability Title
N/A
Source: CVE Program / CVE List V5
Vulnerability 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.
Source: CVE Program / CVE List V5
CVSS Information
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
Source: CVE Program / CVE List V5
Vulnerability Type
对因果或异常条件的不恰当检查
Source: CVE Program / CVE List V5

Affected Products

Vendor Product Affected Versions CPE Subscribe
Signal RingRTC 0 ~ 2.72.0 -

II. Public POCs for CVE-2026-113380

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III. Intelligence Information for CVE-2026-113380

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IV. Related Vulnerabilities

Same vendor: Signal
Same weakness: CWE-754

V. Comments for CVE-2026-113380

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