MEDIUM 4.8 NVD
CVE-2026-125177
FFmpeg through 9.0.2 contains an information disclosure vulnerability in the MSCC/SRGC decoder in libavcodec/mscc.c that outputs uninitialized heap bytes when R
FFmpeg through 9.0.2 contains an information disclosure vulnerability in the MSCC/SRGC decoder in libavcodec/mscc.c that outputs uninitialized heap bytes when RLE data ends early. Attackers can craft an MSCC or SRGC stream, such as in AVI, whose RLE data terminates early so the decoded frame exposes leftover heap memory to viewers of the output.
References
- https://code.ffmpeg.org/FFmpeg/FFmpeg/pulls/24465
- https://github.com/FFmpeg/FFmpeg
- https://github.com/FFmpeg/FFmpeg/blob/n9.0.2/libavcodec/mscc.c#L236
- https://github.com/FFmpeg/FFmpeg/commit/263a85e2a2127396f8a2b0c329ec798e1ea015ad
- 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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