{"id":"CVE-2026-125234","published":"2026-11-09T19:17:01.443","lastModified":"2026-11-10T21:46:26.650","description":"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 audio file, such as a WAV header declaring a huge sample rate with many channels, to hang applications transcoding to WavPack.","cvssScore":5.5,"cvssSeverity":"MEDIUM","cvssVector":"CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H","cwes":["CWE-190"],"vendors":[],"products":[],"references":[{"url":"https://code.ffmpeg.org/FFmpeg/FFmpeg/pulls/25694","tags":[]},{"url":"https://github.com/FFmpeg/FFmpeg","tags":[]},{"url":"https://github.com/FFmpeg/FFmpeg/blob/n9.0.2/libavcodec/wavpackenc.c#L147","tags":[]},{"url":"https://github.com/FFmpeg/FFmpeg/commit/e621da8ecdbef8edb8336cc899b962159dc2465c","tags":[]},{"url":"https://www.vulncheck.com/advisories/ffmpeg-through-9.0.2-wavpack-encoder-integer-overflow-infinite-loop-via-wavpack-encode-init","tags":[]}],"exploitRefs":[{"url":"https://github.com/FFmpeg/FFmpeg","tags":[]},{"url":"https://github.com/FFmpeg/FFmpeg/blob/n9.0.2/libavcodec/wavpackenc.c#L147","tags":[]},{"url":"https://github.com/FFmpeg/FFmpeg/commit/e621da8ecdbef8edb8336cc899b962159dc2465c","tags":[]}],"hasPoc":true,"ai":null}