{"id":"CVE-2026-125202","aliases":[],"url":"https://o3.security/vulnerability/CVE-2026-125202","summary":"FFmpeg through 9.0.2 Heap Buffer Overflow via HEVC VAAPI Tile Arrays","details":"FFmpeg through 9.0.2 contains a heap buffer overflow vulnerability in vaapi_hevc_start_frame() in libavcodec/vaapi_hevc.c that copies unbounded PPS tile counts into fixed-size arrays. Attackers can supply a crafted HEVC bitstream with a large picture and many tiles to write controlled 16-bit values past heap-allocated hwaccel data, corrupting memory in applications decoding with VAAPI.","published":"2026-11-09T19:11:21.451Z","modified":"2026-11-11T02:48:47.634681937Z","cvss":null,"epss":null,"cisaKev":null,"exploitsKnown":null,"affectedPackages":[],"fix":null,"references":[{"type":"WEB","url":"https://code.ffmpeg.org/FFmpeg/FFmpeg"},{"type":"ADVISORY","url":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/125xxx/CVE-2026-125202.json"},{"type":"ADVISORY","url":"https://nvd.nist.gov/vuln/detail/CVE-2026-125202"},{"type":"ADVISORY","url":"https://www.vulncheck.com/advisories/ffmpeg-through-9.0.2-heap-buffer-overflow-via-hevc-vaapi-tile-arrays"},{"type":"REPORT","url":"https://code.ffmpeg.org/FFmpeg/FFmpeg/pulls/25136"},{"type":"PACKAGE","url":"https://github.com/FFmpeg/FFmpeg"},{"type":"ARTICLE","url":"https://github.com/FFmpeg/FFmpeg/blob/n9.0.2/libavcodec/vaapi_hevc.c#L221"}],"provenance":{"sources":["OSV.dev","FIRST.org (EPSS)"],"lastVerified":"2026-11-11T02:48:47.634681937Z"}}