MEDIUM 4.8 NVD
CVE-2026-125266
FFmpeg through 9.0.2 contains an uninitialized stack memory disclosure vulnerability in old_codec23() of libavcodec/sanm.c that leaks stack bytes into decoded f
FFmpeg through 9.0.2 contains an uninitialized stack memory disclosure vulnerability in old_codec23() of libavcodec/sanm.c that leaks stack bytes into decoded frames. Attackers can supply a crafted LucasArts SMUSH/SANM animation using codec 23 with an inline table to expose decoder process stack memory in output video.
References
- https://code.ffmpeg.org/FFmpeg/FFmpeg/pulls/25718
- https://github.com/FFmpeg/FFmpeg
- https://github.com/FFmpeg/FFmpeg/blob/n9.0.2/libavcodec/sanm.c#L799
- https://github.com/FFmpeg/FFmpeg/commit/d42cb1925987cc27899441ce39fa7bd2647dc72e
- https://www.vulncheck.com/advisories/ffmpeg-through-9.0.2-uninitialized-stack-memory-discl
This medium severity vulnerability with a CVSS score of 4.8 was published on 2026-11-09 via NVD.
vulnfeed aggregates 17092 vulnerabilities from NVD, CISA KEV,
Ubuntu, Debian, Red Hat, Kubernetes, Exploit-DB, OSS-Security, GitHub and OpenStack — updated every 4 hours.