CVE-2026-34235CRITICAL 9.1EPSS p32.1%

CVE-2026-34235CVE-2026-34235

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.

Scoring

CVSS 3.19.1 (CRITICAL)
VectorCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:H
EPSS0.40% probability of exploitation · percentile 32.1% · 2026-06-18T12:00:27Z
Published2026-03-31
Last modified2026-04-03

Underlying weaknesses· 1

CWE-125

References

  1. https://github.com/pjsip/pjproject/commit/f4c7d08211da1fe2ad1504434a0ad99d12aa7536
  2. https://github.com/pjsip/pjproject/security/advisories/GHSA-pqrm-53pc-wx28

1

TypeTargetConfidenceTier
WeaknessOut-of-bounds Readcwe-1250%live

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Sourced from NVD + FIRST.org EPSS. Curated for EU compliance use cases by Adam Lundqvist, Founder at SQUR.