{"id":"CVE-2026-107676","published":"2026-10-08T16:17:05.247","lastModified":"2026-10-14T23:55:20.810","description":"FFmpeg through 9.0.2 contains an uninitialized memory disclosure vulnerability in av_dynamic_hdr_plus_to_t35() that leaves up to three payload bytes uninitialized when tone_mapping_flag is 0. Attackers can supply crafted Matroska T.35 BlockAdditional or HEVC/AV1 SEI metadata so that remuxing or transcoding writes leaked process memory into output files.","cvssScore":3.3,"cvssSeverity":"LOW","cvssVector":"CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:L/I:N/A:N","cwes":["CWE-908"],"vendors":["ffmpeg"],"products":["ffmpeg"],"references":[{"url":"https://code.ffmpeg.org/FFmpeg/FFmpeg/commit/2c2f6e96e31795ae95a8f8323a493ffbc493111f","tags":["Patch"]},{"url":"https://code.ffmpeg.org/FFmpeg/FFmpeg/pulls/24590","tags":["Issue Tracking","Patch"]},{"url":"https://ffmpeg.org/","tags":["Product"]},{"url":"https://github.com/FFmpeg/FFmpeg/blob/n9.0.2/libavutil/hdr_dynamic_metadata.c#L374-L385","tags":["Product"]},{"url":"https://www.vulncheck.com/advisories/ffmpeg-through-9.0.2-uninitialized-memory-disclosure-via-hdr10-metadata-serializer","tags":["Third Party Advisory"]}],"exploitRefs":[{"url":"https://github.com/FFmpeg/FFmpeg/blob/n9.0.2/libavutil/hdr_dynamic_metadata.c#L374-L385","tags":["Product"]}],"hasPoc":true,"ai":null}