PJSIP is a free and open source multimedia communication library written in C. In versions 2.16 and below, there is a critical Heap-based Buffer Overflow vulnerability in PJSIP's H.264 unpacketizer. The bug occurs when processing malformed SRTP packets, where the unpacketizer reads a 2-byte NAL unit size field without validating that both bytes are within the payload buffer bounds. The vulnerability affects applications that receive video using H.264. A patch is available at https://github.com/pjsip/pjproject/commit/f821c214e52b11bae11e4cd3c7f0864538fb5491.
Metrics
Affected Vendors & Products
No data.
No data.
No data.
No data.
Advisories
No advisories yet.
Fixes
Solution
No solution given by the vendor.
Workaround
No workaround given by the vendor.
References
History
Fri, 20 Feb 2026 01:00:00 +0000
| Type | Values Removed | Values Added |
|---|---|---|
| Description | PJSIP is a free and open source multimedia communication library written in C. In versions 2.16 and below, there is a critical Heap-based Buffer Overflow vulnerability in PJSIP's H.264 unpacketizer. The bug occurs when processing malformed SRTP packets, where the unpacketizer reads a 2-byte NAL unit size field without validating that both bytes are within the payload buffer bounds. The vulnerability affects applications that receive video using H.264. A patch is available at https://github.com/pjsip/pjproject/commit/f821c214e52b11bae11e4cd3c7f0864538fb5491. | |
| Title | PJSIP has a Heap-based Buffer Overflow vulnerability in its H.264 unpacketizer | |
| Weaknesses | CWE-122 | |
| References |
| |
| Metrics |
cvssV4_0
|
Projects
Sign in to view the affected projects.
MITRE
Status: PUBLISHED
Assigner: GitHub_M
Published:
Updated: 2026-02-20T00:26:54.397Z
Reserved: 2026-02-16T22:20:28.612Z
Link: CVE-2026-26967
Vulnrichment
No data.
NVD
Status : Received
Published: 2026-02-20T01:15:59.953
Modified: 2026-02-20T01:15:59.953
Link: CVE-2026-26967
Redhat
No data.
OpenCVE Enrichment
No data.
Weaknesses