Vulnerability in FFmpeg

[ Description ]Official description

FFmpeg 5.0 through 9.0.2 contains a path traversal vulnerability in the IMF demuxer that allows attackers to open files outside the package via unvalidated ASSETMAP Path elements. Attackers can supply a crafted IMF package with '..' or absolute paths to demux local MXF files, probe file existence and size, or trigger server-side requests.

[ Fixes ]Fixes and patches

No fix or interim patch is linked from our sources yet. Check the vendor references below and limit exposure of affected systems until a fix is available.

[ Advisories ]Government CERT advisories

• BSI CERT-Bund1 Nov 2026WID-SEC-2026-4282

  ffmpeg: Multiple vulnerabilities allow information disclosure Translated from German

  CVE-2026-120246CVE-2026-120210CVE-2026-120243+3 more CVEs

[ References ]References

• code.ffmpeg.org/FFmpeg/FFmpeg/pulls/25341
• github.com/FFmpeg/FFmpeg
• github.com/FFmpeg/FFmpeg/blob/n9.0.2/libavformat/imfdec.c
• www.vulncheck.com/advisories/ffmpeg-5.0-through-9.0.2-path-traversal-via-imf-demuxer-as…