CVE-2026-107676: FFmpeg 0 through 9.0.2

Affected technology

FFmpeg · 0 through 9.0.2
FFmpeg

Description’s affected range: through 9.0.2

Component: Not specified by the source

Attack conditions (Vendor/CNA, CVSS 4.0): Local · No privileges required · Passive user interaction

What an attacker can do

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. Vendor/CNA’s CVSS 4.0 assessment (base score 4.8/10) rates confidentiality impact as low; integrity and availability impact as none.