{"id":"CVE-2026-107676","revision":"3986a5884b37444f98216608578c1e82","records":[{"revision":"3986a5884b37444f98216608578c1e82","observedAt":"2026-10-23T15:48:27.903+00:00","statement":{"source":"cve-program","id":"CVE-2026-107676","aliases":[],"title":"FFmpeg through 9.0.2 Uninitialized Memory Disclosure via HDR10+ Metadata Serializer","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.","state":0,"publishedAt":"2026-10-08T15:28:41.795+00:00","modifiedAt":"2026-10-14T00:59:55.023+00:00","affected":[{"ecosystem":"Vendor product","name":"FFmpeg","ranges":[],"versions":[],"rawVersionEvidence":"{\n                    \"vendor\": \"FFmpeg\",\n                    \"product\": \"FFmpeg\",\n                    \"defaultStatus\": \"unaffected\",\n                    \"versions\": [\n                        {\n                            \"version\": \"0\",\n                            \"lessThanOrEqual\": \"9.0.2\",\n                            \"status\": \"affected\",\n                            \"versionType\": \"semver\"\n                        }\n                    ],\n                    \"packageURL\": \"pkg:github/ffmpeg/ffmpeg\",\n                    \"repo\": \"https://code.ffmpeg.org/FFmpeg/FFmpeg\"\n                }"}],"metrics":[{"system":"CVSS 4.0","vector":"CVSS:4.0/AV:L/AC:L/AT:N/PR:N/UI:P/VC:L/VI:N/VA:N/SC:N/SI:N/SA:N","score":4.8,"severity":"MEDIUM"},{"system":"CVSS 3.1","vector":"CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:L/I:N/A:N","score":3.3,"severity":"LOW"}],"references":["https://code.ffmpeg.org/FFmpeg/FFmpeg/pulls/24590","https://code.ffmpeg.org/FFmpeg/FFmpeg/commit/2c2f6e96e31795ae95a8f8323a493ffbc493111f","https://github.com/FFmpeg/FFmpeg/blob/n9.0.2/libavutil/hdr_dynamic_metadata.c#L374-L385","https://ffmpeg.org/","https://www.vulncheck.com/advisories/ffmpeg-through-9.0.2-uninitialized-memory-disclosure-via-hdr10-metadata-serializer"],"sourceUrl":"https://www.cve.org/CVERecord?id=CVE-2026-107676","license":"CVE Program Terms of Use","key":"cve-program:CVE-2026-107676","identifiers":["CVE-2026-107676"]},"retained":false,"historicalAffected":[]}],"coverage":[]}