{"id":"CVE-2026-125211","published":"2026-11-09T19:16:57.947","lastModified":"2026-11-10T21:46:37.883","description":"FFmpeg through 9.0.2 contains an out-of-bounds read and invalid free vulnerability in aribcaption_trans_ass_subtitle() in libavcodec/libaribcaption.c that frees subtitle rectangles using region_count instead of num_rects. Attackers can supply crafted ARIB captions whose later region exceeds the 8 KiB AVBPrint limit, triggering cleanup that frees out-of-bounds pointers and corrupts the heap.","cvssScore":7,"cvssSeverity":"HIGH","cvssVector":"CVSS:3.1/AV:L/AC:H/PR:N/UI:R/S:U/C:H/I:H/A:H","cwes":["CWE-125"],"vendors":[],"products":[],"references":[{"url":"https://code.ffmpeg.org/FFmpeg/FFmpeg/pulls/24992","tags":[]},{"url":"https://github.com/FFmpeg/FFmpeg","tags":[]},{"url":"https://github.com/FFmpeg/FFmpeg/blob/n9.0.2/libavcodec/libaribcaption.c#L778","tags":[]},{"url":"https://github.com/FFmpeg/FFmpeg/commit/4ec127c82678b06658e963291f272881dc878735","tags":[]},{"url":"https://www.vulncheck.com/advisories/ffmpeg-through-9.0.2-heap-corruption-via-libaribcaption-ass-error-cleanup","tags":[]}],"exploitRefs":[{"url":"https://github.com/FFmpeg/FFmpeg","tags":[]},{"url":"https://github.com/FFmpeg/FFmpeg/blob/n9.0.2/libavcodec/libaribcaption.c#L778","tags":[]},{"url":"https://github.com/FFmpeg/FFmpeg/commit/4ec127c82678b06658e963291f272881dc878735","tags":[]}],"hasPoc":true,"ai":null}