CVE-2026-125224
MEDIUM
NVD
CVSS Score
5.5
Severity
MEDIUM
Published
Nov 09, 2026
Vendor
unknown
Description
FFmpeg through 9.0.2 contains a denial of service vulnerability in libavcodec/vorbis_parser.c that re-parses invalid extradata for every packet when valid_extradata remains false. Attackers can supply crafted Ogg or Matroska Vorbis streams with large invalid extradata and many packets to exhaust CPU during demuxing or probing.
References
- https://code.ffmpeg.org/FFmpeg/FFmpeg/pulls/25694
- https://github.com/FFmpeg/FFmpeg
- https://github.com/FFmpeg/FFmpeg/blob/n9.0.2/libavcodec/vorbis_parser.c#L312
- https://github.com/FFmpeg/FFmpeg/commit/90f5e61a1da2dcc0050169af8ca593530f26071b
- https://www.vulncheck.com/advisories/ffmpeg-through-9.0.2-vorbis-parser-cpu-exhaustion-via-invalid-extradata