CVE-2026-120210

medium

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.

References

https://www.vulncheck.com/advisories/ffmpeg-5.0-through-9.0.2-path-traversal-via-imf-demuxer-assetmap-path

https://github.com/FFmpeg/FFmpeg/blob/n9.0.2/libavformat/imfdec.c#L273

https://github.com/FFmpeg/FFmpeg

https://euvd.enisa.europa.eu/vulnerability/EUVD-2026-114731

https://code.ffmpeg.org/FFmpeg/FFmpeg/pulls/25341

Details

Source: Mitre, NVD

Published: 2026-10-31

Updated: 2026-10-31

Risk Information

CVSS v2

Base Score: 5

Vector: CVSS2#AV:N/AC:L/Au:N/C:P/I:N/A:N

Severity: Medium

CVSS v3

Base Score: 4.3

Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:L/I:N/A:N

Severity: Medium

CVSS v4

Base Score: 5.3

Vector: CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:P/VC:L/VI:N/VA:N/SC:N/SI:N/SA:N

Severity: Medium