CVE-2026-34235

CRITICAL

9.1

Description

PJSIP is a free and open source multimedia communication library written in C. Prior to version 2.17, a heap out-of-bounds read vulnerability exists in PJSIP's VP9 RTP unpacketizer that occurs when parsing crafted VP9 Scalability Structure (SS) data. Insufficient bounds checking on the payload descriptor length may cause reads beyond the allocated RTP payload buffer. This issue has been patched in version 2.17. A workaround for this issue involves disabling VP9 codec if not needed.

CVE Details

CVSS v3.1 Score9.1

SeverityCRITICAL

CVSS VectorCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:H

Attack VectorNETWORK

ComplexityLOW

Privileges RequiredNONE

User InteractionNONE

Published3/31/2026

Last Modified4/3/2026

Sourcenvd

Honeypot Sightings0

Affected Products

teluu:pjsip

Weaknesses (CWE)

CWE-125

References

https://github.com/pjsip/pjproject/commit/f4c7d08211da1fe2ad1504434a0ad99d12aa7536(security-advisories@github.com)

https://github.com/pjsip/pjproject/security/advisories/GHSA-pqrm-53pc-wx28(security-advisories@github.com)

IOC Correlations

No correlations recorded

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