{"id":"CVE-2026-125182","published":"2026-11-09T19:16:53.587","lastModified":"2026-11-10T21:46:30.153","description":"FFmpeg through 9.0.2 contains an out-of-bounds read vulnerability in the Cook decoder joint_decode() function because cook_decode_init() does not check js_subband_start against subbands. Attackers can supply a crafted RealMedia file whose extradata causes reads past decode_buffer_0, leaking pointers and decoder state into decoded audio to help defeat ASLR.","cvssScore":3.3,"cvssSeverity":"LOW","cvssVector":"CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:L/I:N/A:N","cwes":["CWE-125"],"vendors":[],"products":[],"references":[{"url":"https://code.ffmpeg.org/FFmpeg/FFmpeg/pulls/24763","tags":[]},{"url":"https://github.com/FFmpeg/FFmpeg","tags":[]},{"url":"https://github.com/FFmpeg/FFmpeg/blob/n9.0.2/libavcodec/cook.c#L854","tags":[]},{"url":"https://github.com/FFmpeg/FFmpeg/commit/7145d13201c9f9c5253f40295714faa4f4ada1a0","tags":[]},{"url":"https://www.vulncheck.com/advisories/ffmpeg-through-9.0.2-out-of-bounds-read-via-cook-decoder-js-subband-start","tags":[]}],"exploitRefs":[{"url":"https://github.com/FFmpeg/FFmpeg","tags":[]},{"url":"https://github.com/FFmpeg/FFmpeg/blob/n9.0.2/libavcodec/cook.c#L854","tags":[]},{"url":"https://github.com/FFmpeg/FFmpeg/commit/7145d13201c9f9c5253f40295714faa4f4ada1a0","tags":[]}],"hasPoc":true,"ai":null}