EUVD-2026-62584

FFmpeg before commit 983dae9 contains an out-of-bounds read in the AV1 RTP packetizer libavformat/rtpencav1.c. The keyframe detection loop that searches for a sequence header OBU advanced its pointer and remaining-size counter by the encoded header length plus the OBU payload size without first...

CVE-2026-75147

FFmpeg versions before commit 983dae9 have an out-of-bounds read in the AV1 RTP packetizer (libavformat/rtpenc_av1.c). A crafted OBU size causes the remaining-size counter to wrap, letting the keyframe-detection loop dereference a pointer past the packet buffer. CVSS 3.1 scores 7.1 (HIGH). No in-...

EUVD-2026-62582

FFmpeg before commit b4c199c contains an incorrect integer narrowing conversion in the AV1 RTP packetizer libavformat/rtpencav1.c. The OBU size is cast to long before comparison against the remaining frame size. On targets where long is 32 bits, including 64-bit Windows, sufficiently large OBU si...