{"id":"CVE-2026-125234","title":"FFmpeg through 9.0.2 WavPack Encoder Integer Overflow Infinite Loop via wavpack_encode_init","summary":"FFmpeg through 9.0.2 contains an integer overflow vulnerability in wavpack_encode_init() in libavcodec/wavpackenc.c that causes an infinite loop when computing block size from sample rate and channel count. Attackers can supply a crafted…","severity":"medium","cvss":5.5,"cvssVector":"CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H","cvssSource":"cna","cwe":["CWE-190"],"vendor":"FFmpeg","product":"FFmpeg","affected":["FFmpeg <= 9.0.2"],"ssvc":{"exploitation":"none","automatable":"no","technicalImpact":"partial","timestamp":"2026-11-09T20:57:25.833097Z"},"published":"2026-11-09","updated":"2026-11-09","sourceUpdated":"2026-11-09T21:06:53.992Z","source":"CVEORG","sourceUrl":"https://www.cve.org/CVERecord?id=CVE-2026-125234","references":[{"url":"https://code.ffmpeg.org/FFmpeg/FFmpeg/pulls/25694"},{"url":"https://github.com/FFmpeg/FFmpeg/commit/e621da8ecdbef8edb8336cc899b962159dc2465c","label":"Patch Commit"},{"url":"https://github.com/FFmpeg/FFmpeg/blob/n9.0.2/libavcodec/wavpackenc.c#L147"},{"url":"https://github.com/FFmpeg/FFmpeg"},{"url":"https://www.vulncheck.com/advisories/ffmpeg-through-9.0.2-wavpack-encoder-integer-overflow-infinite-loop-via-wavpack-encode-init","label":"VulnCheck Advisory: FFmpeg through 9.0.2 WavPack Encoder Integer Overflow Infinite Loop via wavpack_encode_init"}],"tags":["cve.org"],"ingestedAt":"2026-11-09T19:18:02.589Z","slug":"CVE-2026-125234","body":"## Overview\n\nFFmpeg through 9.0.2 contains an integer overflow vulnerability in wavpack_encode_init() in libavcodec/wavpackenc.c that causes an infinite loop when computing block size from sample rate and channel count. Attackers can supply a crafted audio file, such as a WAV header declaring a huge sample rate with many channels, to hang applications transcoding to WavPack.\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":30,"depthScoreParts":{"impact":30.3,"likelihood":0,"exploitation":0,"ransomware":0},"changes":[]}