{"id":"CVE-2026-125217","title":"FFmpeg through 9.0.2 RoQ DPCM Encoder Uninitialized Heap Memory Disclosure","summary":"FFmpeg through 9.0.2 contains an uninitialized memory use vulnerability in roq_dpcm_encode_frame() in libavcodec/roqaudioenc.c that encodes stale heap contents when flushed early. Attackers can supply short audio streams under eight fram…","severity":"low","cvss":3.3,"cvssVector":"CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:L/I:N/A:N","cvssSource":"cna","cwe":["CWE-908"],"vendor":"FFmpeg","product":"FFmpeg","affected":["FFmpeg <= 9.0.2"],"published":"2026-11-09","updated":"2026-11-09","sourceUpdated":"2026-11-09T19:11:32.385Z","source":"CVEORG","sourceUrl":"https://www.cve.org/CVERecord?id=CVE-2026-125217","references":[{"url":"https://code.ffmpeg.org/FFmpeg/FFmpeg/pulls/25694"},{"url":"https://github.com/FFmpeg/FFmpeg/commit/f71410e0288f0c40ae2fb5e5a4d7428763d08a71","label":"Patch Commit"},{"url":"https://github.com/FFmpeg/FFmpeg/blob/n9.0.2/libavcodec/roqaudioenc.c#L156"},{"url":"https://github.com/FFmpeg/FFmpeg"},{"url":"https://www.vulncheck.com/advisories/ffmpeg-through-9.0.2-roq-dpcm-encoder-uninitialized-heap-memory-disclosure","label":"VulnCheck Advisory: FFmpeg through 9.0.2 RoQ DPCM Encoder Uninitialized Heap Memory Disclosure"}],"tags":["cve.org"],"ingestedAt":"2026-11-09T19:18:02.592Z","slug":"CVE-2026-125217","body":"## Overview\n\nFFmpeg through 9.0.2 contains an uninitialized memory use vulnerability in roq_dpcm_encode_frame() in libavcodec/roqaudioenc.c that encodes stale heap contents when flushed early. Attackers can supply short audio streams under eight frames for RoQ DPCM transcoding, causing DPCM-quantized uninitialized heap data from frame_buffer to leak into output packets.\n\n## Affected\n\n- `FFmpeg <= 9.0.2`\n\n## Remediation\n\nRefer to the linked advisories for vendor-supplied fixes and affected version ranges.","depth":"sunlit","depthScore":18,"depthScoreParts":{"impact":18.2,"likelihood":0,"exploitation":0,"ransomware":0},"changes":[]}