CVE-2026-107676 — FFmpeg through 9.0.2 Uninitialized Memory Disclosure via HDR10+ Metadata Serializer
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_mapp…
Published: 2026-10-08 · CVSS: 4.8 · CVSS 4.0
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.
Source: CVE Program · Revision 8b16575c39f1e1810c5e863010da073d2d3285e7