Description

PJSIP is a free and open source multimedia communication library. Versions prior to 2.17 have a critical heap buffer underflow vulnerability in PJSIP's H.264 packetizer. The bug occurs when processing malformed H.264 bitstreams without NAL unit start codes, where the packetizer performs unchecked pointer arithmetic that can read from memory located before the allocated buffer. Version 2.17 contains a patch for the issue.

INFO

Published Date :

2026-02-19T19:28:58.859Z

Last Modified :

2026-02-19T21:22:31.050Z

Source :

GitHub_M
AFFECTED PRODUCTS

The following products are affected by CVE-2026-26203 vulnerability.

Vendors Products
Pjsip
  • Pjmedia-video
  • Pjsip
REFERENCES

Here, you will find a curated list of external links that provide in-depth information to CVE-2026-26203.

URL Resource
https://github.com/pjsip/pjproject/commit/5aee54f09d4f91538d55279d7316591b28fded6c cve-icon cve-icon
https://github.com/pjsip/pjproject/security/advisories/GHSA-p965-mf7j-gwv8 cve-icon cve-icon
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CVSS Vulnerability Scoring System

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Detailed values of each vector for above chart.
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