CVE-2026-26967
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.
How to fix
- pjsip pjsip2.17 or later
Affected products
| Product | Affected versions | Fixed in |
|---|---|---|
| pjsip pjsip | v < 2.17 | 2.17 |
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Attack Surface Management
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