FFmpeg through 9.0.2 contains a division by zero vulnerability in estimatemotionb() in libavcodec/motionest.c, caused by frame timestamp…
CVE-2026-125232
FFmpeg through 9.0.2 contains a division by zero vulnerability in estimatemotionb() in libavcodec/motionest.c, caused by frame timestamp distances truncated to 16 bits. Attackers can supply input with timestamp gaps that are multiples of 65536, crashing MPEG-4 Part 2 or MPEG-1/2 B-frame encoding with SIGFPE.
Assessment
- CVSS
- 6.8 (v4.0)
- Severity
- Medium
- Known exploited
- Not listed in CISA KEV
- Exploit availability
- Nothing found in Exploit-DB, Metasploit, Nuclei or public PoC repositories
- Published
- 9 November 2026
- Last updated
- 9 November 2026
- Assigner
- VulnCheck
CVSS vectorCVSS:4.0/AV:L/AC:L/AT:N/PR:N/UI:P/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N
At the source
References
- https://code.ffmpeg.org/FFmpeg/FFmpeg/pulls/24552
- https://github.com/FFmpeg/FFmpeg/commit/bf0a2e4680df92d8de6514090d350152eb7845b8
- https://github.com/FFmpeg/FFmpeg/commit/16d19ccbce802634662a9bf18a5679cf27da2848
- https://github.com/FFmpeg/FFmpeg/blob/n9.0.2/libavcodec/motion_est.c#L1153
- https://github.com/FFmpeg/FFmpeg
- https://www.vulncheck.com/advisories/ffmpeg-through-9.0.2-division-by-zero-in-b-frame-motion-estimation
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