{"schema":"threatline.record/2","record":{"id":"CVE-2026-107676","aliases":[],"summary":"FFmpeg through 9.0.2 Uninitialized Memory Disclosure via HDR10+ Metadata Serializer","details":"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.","categories":["Libraries & packages"],"product":"FFmpeg","vendor":"FFmpeg","ecosystem":null,"affected_ranges":[{"source":"CVE List","source_url":"https://www.cve.org/CVERecord?id=CVE-2026-107676","source_modified_at":"2026-10-14T00:59:55.023Z","fetched_at":"2026-10-23T18:48:36.087640Z","product":"FFmpeg","vendor":"FFmpeg","versions":[{"version":"0","lessThanOrEqual":"9.0.2","status":"affected","versionType":"semver"}],"defaultStatus":"unaffected"}],"fixed_versions":[],"cvss":4.8,"severity":"Medium","kev":{"listed":false},"epss":{"probability":0.00144,"percentile":0.03372,"score_date":"2026-10-23"},"published_at":"2026-10-08T15:28:41.795Z","modified_at":"2026-10-14T00:59:55.023Z","provenance":[{"source":"CVE List","url":"https://www.cve.org/CVERecord?id=CVE-2026-107676","fetched_at":"2026-10-23T18:48:36.087640Z","source_modified_at":"2026-10-14T00:59:55.023Z"},{"source":"EPSS","url":"https://api.first.org/data/v1/epss?cve=CVE-2026-107676","fetched_at":"2026-10-23T18:42:43.628194Z","source_modified_at":"2026-10-23"}],"sources":["CVE List","EPSS"],"references":[{"source":"CVE List","url":"https://code.ffmpeg.org/FFmpeg/FFmpeg/pulls/24590","tags":["patch"]},{"source":"CVE List","url":"https://code.ffmpeg.org/FFmpeg/FFmpeg/commit/2c2f6e96e31795ae95a8f8323a493ffbc493111f","tags":["patch"]},{"source":"CVE List","url":"https://github.com/FFmpeg/FFmpeg/blob/n9.0.2/libavutil/hdr_dynamic_metadata.c#L374-L385","tags":["technical-description"]},{"source":"CVE List","url":"https://ffmpeg.org/","tags":["product"]},{"source":"CVE List","url":"https://www.vulncheck.com/advisories/ffmpeg-through-9.0.2-uninitialized-memory-disclosure-via-hdr10-metadata-serializer","tags":["third-party-advisory"]}],"locations":[],"motoko_assessment":{"status":"requires_architecture_review","automatic_remediation":false},"cve_state":"PUBLISHED","cvss_source":"CVE List","ssvc":{"exploitation":"none","automatable":"no","technical_impact":"partial","assessed_at":"2026-10-14T00:59:44.930454Z"},"classification":{"method":"product-first software-layer rules","rules_version":"2.1","matched_on":"product","confidence":"heuristic","reviewed":false},"change_timestamp":"2026-10-14T00:59:55.023Z","content_hash":"645c4a7ad349234fdecb2a9b21c86c28e9bc3bfaf39a0d0f3d11d73ba4953d49"}}