CVE-2026-107676: Ffmpeg

Low severity, CVSS 3.3. EPSS: 0.1% chance of exploitation in the next 30 days.

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.

Affected products

• Ffmpeg Ffmpeg: up to and including 9.0.2

Published 2026-10-08. Last modified 2026-10-08.