CVE-2026-26203

PJSIP (pjproject) versions prior to 2.17 contain a heap buffer underflow in the H.264 packetizer when processing malformed bitstreams without NAL unit start codes. The packetizer performs unchecked pointer arithmetic, potentially reading memory before the allocated buffer. A patch is available in...

CVE-2026-26203 PJSIP's pjmedia-video has use-after-free in H264 packetizer when packetizing fragmented NAL

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...

CVE-2026-26203 PJSIP's pjmedia-video has use-after-free in H264 packetizer when packetizing fragmented NAL

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...