CVE-2026-32942: PJSIP has ICE session use-after-free race conditions

Severity: high (CVSS 8.1 v3.1)
Exploited in the wild: not listed in CISA KEV
EPSS: 0.3% probability of exploitation in the next 30 days
Public exploit or detection template: none known
Published: 2026-03-20 · updated 2026-06-17
Weakness: CWE-416

Description

PJSIP is a free and open source multimedia communication library written in C. Versions 2.16 and below contain a heap use-after-free vulnerability in the ICE session that occurs when there are race conditions between session destruction and the callbacks. This issue has been fixed in version 2.17.

Affected products

Pjsip: before 2.17 — fixed in 2.17

How to fix

Upgrade to a fixed version: Pjsip 2.17. Check the vendor advisory for mitigations.

References

https://github.com/pjsip/pjproject/commit/c9caceddabda7f18337b2a82d25d65f6224b450a
https://github.com/pjsip/pjproject/issues/1451
https://github.com/pjsip/pjproject/security/advisories/GHSA-g88q-c2hm-q7p7

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