MEDIUM 4.8 NVD
CVE-2026-125268
FFmpeg through 9.0.2 contains an uninitialized memory disclosure vulnerability in the CineForm HD decoder that allows attackers to leak heap memory via unzeroed
FFmpeg through 9.0.2 contains an uninitialized memory disclosure vulnerability in the CineForm HD decoder that allows attackers to leak heap memory via unzeroed idwt_tmp buffers in libavcodec/cfhd.c. Attackers can supply a crafted CFHD file with an ImageHeight tag exceeding coded band heights, causing uninitialized heap bytes to be filtered into decoded video output.
References
- https://code.ffmpeg.org/FFmpeg/FFmpeg/pulls/25718
- https://github.com/FFmpeg/FFmpeg
- https://github.com/FFmpeg/FFmpeg/blob/n9.0.2/libavcodec/cfhd.c#L292
- https://github.com/FFmpeg/FFmpeg/commit/0bfa350291b2118f6d590263dc1ee9cea766c0f1
- https://www.vulncheck.com/advisories/ffmpeg-through-9.0.2-uninitialized-heap-memory-disclo
This medium severity vulnerability with a CVSS score of 4.8 was published on 2026-11-09 via NVD.
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