cvedb.io
CVE-2026-26203
MEDIUM · CVSS 6.5
EPSS exploitation probability: 0%
Published 2026-02-19T20:25:43.113 · Last modified 2026-06-17T10:25:56.137

Summary

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.

Affected products

pjsip — pjsip

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References

This product uses data from the NVD API but is not endorsed or certified by the NVD. Informational only; not professional security advice.