asterisk: PJSIP is a free and open source multimedia communication library
CVE-2026-26203 is fixed in asterisk on 1 platform by DEBIAN-CVE-2026-26203 (version 1:22.10.0+dfsg+~cs6.17.60671434-1), released February 19, 2026. It is not reported as exploited. Patch Radar priority: Routine.
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.
Where it's fixed
| Product | Fixed in | Fix | Released |
|---|---|---|---|
| Linux | |||
| asterisk · Debian 14 | 1:22.10.0+dfsg+~cs6.17.60671434-1 | DEBIAN-CVE-2026-26203 | Feb 19, 2026 |
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