CVE-2026-120210

FFmpeg 5.0 through 9.0.2 Path Traversal via IMF Demuxer ASSETMAP Path

Published Oct 31, 2026 CVSS 4.0 · 5.3 Medium EPSS < 1% KEV · Not listed
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.

Remediation

No solution or workaround provided in the CVE record

Tracking

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Advisories

No advisories available
History
Type Values Removed Values Added
Metrics ssvc

{'options': {'Automatable': 'no', 'Exploitation': 'none', 'Technical Impact': 'partial'}, 'version': '2.0.3'}

Type Values Removed Values Added
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.
Title FFmpeg 5.0 through 9.0.2 Path Traversal via IMF Demuxer ASSETMAP Path
First Time appeared Ffmpeg
Ffmpeg ffmpeg
Weaknesses CWE-22
CPEs cpe:2.3:a:ffmpeg:ffmpeg:*:*:*:*:*:*:*:*
Vendors & Products Ffmpeg
Ffmpeg ffmpeg
References
Metrics cvssV3_1

{'score': 4.3, 'vector': 'CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:L/I:N/A:N'}

cvssV4_0

{'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'}

Weaknesses

Sources

Status
PUBLISHED
Assigner
VulnCheck
Published
Updated
Nov 5, 2026, 3:34 PM
Reserved
Oct 31, 2026, 11:44 AM
Status
Awaiting Analysis
Published
Oct 31, 2026, 6:17 PM
Modified
Nov 5, 2026, 4:17 PM
Severity
Moderate
Public date
Oct 31, 2026, 5:25 PM