Is CVE-2026-120210 exploited in the wild?

No. Junglewise Threat Intelligence has no report of CVE-2026-120210 being exploited in the wild.

How severe is CVE-2026-120210?

Medium severity, with a CVSS score of 4.3, published 31 October 2026.

Is there a fix for CVE-2026-120210?

No fixed version is recorded yet. Check the vendor's advisory in the references below. If you run it, Junglewise drafts a mitigation that fits your setup and applies it once you approve, with senior security engineers behind it.

How is CVE-2026-120210 attacked?

It is attacked over the network.

Am I affected by CVE-2026-120210?

Check whether you run Ffmpeg at an affected version. Junglewise does that check for you around the clock: connect your code, cloud and domains, and it matches new vulnerabilities like this one against what you actually run and tells you when one reaches you.

CVE-2026-120210: FFmpeg path traversal in IMF demuxer

CVE-2026-120210 · Severity: medium · CVSS 4.3 · Published 2026-10-31

FFmpeg is a multimedia framework that processes video and audio files. A path traversal vulnerability in its IMF (Interoperable Master Format) demuxer allows attackers to supply crafted files with manipulated paths that access files outside the intended package directory, potentially exposing file contents, revealing file sizes, or triggering unauthorized file reads from the server.

Technologies: Ffmpeg. Vendors: Ffmpeg.

Quick answers

Is CVE-2026-120210 exploited in the wild?: No. Junglewise Threat Intelligence has no report of CVE-2026-120210 being exploited in the wild.
How severe is CVE-2026-120210?: Medium severity, with a CVSS score of 4.3, published 31 October 2026.
Which products and versions are affected?: Ffmpeg 5.0 through 9.0.2.
Is there a fix for CVE-2026-120210?: No fixed version is recorded yet. Check the vendor's advisory in the references below. If you run it, Junglewise drafts a mitigation that fits your setup and applies it once you approve, with senior security engineers behind it.
How is CVE-2026-120210 attacked?: It is attacked over the network.
Am I affected by CVE-2026-120210?: Check whether you run Ffmpeg at an affected version. Junglewise does that check for you around the clock: connect your code, cloud and domains, and it matches new vulnerabilities like this one against what you actually run and tells you when one reaches you.

Technical details

The IMF demuxer fails to validate asset map path elements, permitting absolute paths, URLs, and ".." components that escape the package directory. An attacker can craft a malicious IMF package with unvalidated ASSETMAP paths to demux local MXF files, probe file existence and size, or trigger server-side file access. The vulnerability affects versions 5.0 through 9.0.2 and requires the attacker to supply the crafted input file.

Affected products

FFmpeg FFmpeg 5.0 through 9.0.2

Timeline

2026-10-31: disclosed

References

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