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Vulnerability record · CVE-2026-32942 · published 20 March 2026

CVE-2026-32942: Pjsip use after free vulnerability

Pjsip · Pjsip

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.

8.0 CVSS 4.0 High EPSS 0.60% · top 53.6% CWE-416 · Use after free
8.0CVSS 4.0 base score
0.60%EPSS exploitation probability, 30 days
NoNot in CISA KEV
1Affected product versions listed by NVD
3References
17 Jun 2026Last modified by NVD

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.

CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:N/SC:N/SI:N/SA:N/E:U/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:X/AU:X/R:

Affected products

1 vulnerable configurations from NVD's CPE data, grouped by vendor and product.

References

LinkTags
https://github.com/pjsip/pjproject/commit/c9caceddabda7f18337b2a82d25d65f6224b450a Patch
https://github.com/pjsip/pjproject/issues/1451 Issue Tracking
https://github.com/pjsip/pjproject/security/advisories/GHSA-g88q-c2hm-q7p7 PatchVendor Advisory

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Related vulnerabilities

Same products first, then exploited flaws of the same weakness class.

9.8CVE-2022-23547Pjsip heap-based buffer overflow vulnerabilityPJSIP is a free and open source multimedia communication library written in C language implementing standard based protocols such as SIP, SDP, RTP, S…EPSS 0.95%9.8CVE-2022-39244Pjsip classic buffer overflow vulnerabilityPJSIP is a free and open source multimedia communication library written in C. In versions of PJSIP prior to 2.13 the PJSIP parser, PJMEDIA RTP decod…EPSS 1.2%9.8CVE-2022-24786Pjsip out-of-bounds read vulnerabilityPJSIP is a free and open source multimedia communication library written in C. PJSIP versions 2.12 and prior do not parse incoming RTCP feedback RPSI…EPSS 2.0%8.7CVE-2026-29068Pjsip stack-based buffer overflow vulnerabilityPJSIP is a free and open source multimedia communication library written in C. Prior to version 2.17, there is a stack buffer overflow vulnerability …EPSS 0.53%8.7CVE-2026-28799Pjsip use after free vulnerabilityPJSIP is a free and open source multimedia communication library written in C. Prior to version 2.17, a heap use-after-free vulnerability exists in P…EPSS 0.49%8.5CVE-2026-40614Pjsip heap-based buffer overflow vulnerabilityPJSIP is a free and open source multimedia communication library written in C. In 2.16 and earlier, there is a buffer overflow when decoding Opus aud…EPSS 0.37%8.4CVE-2026-32945Pjsip heap-based buffer overflow vulnerabilityPJSIP is a free and open source multimedia communication library written in C. Versions 2.16 and below have a Heap-based Buffer Overflowvulnerability…EPSS 0.54%8.1CVE-2026-40892Pjsip stack-based buffer overflow vulnerabilityPJSIP is a free and open source multimedia communication library written in C. In 2.16 and earlier, a stack buffer overflow exists in pjsip_auth_crea…EPSS 0.60%

Source: NIST National Vulnerability Database (record CVE-2026-32942), CISA KEV, FIRST EPSS (scores of 2026-09-26). This page is refreshed as NVD updates the record.