What is CVE-2023-6604?

CVE-2023-6604 is a medium-severity vulnerability in Ffmpeg, classified under Resource Injection. CVSS score: 5.3/10. Published 2025-01-06.

How severe is CVE-2023-6604?

Medium severity. CVSS v3 base score is 5.3 out of 10.

Is CVE-2023-6604 known to be exploited?

1 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.

RCE in Ffmpeg

CVE-2023-6604

A flaw was found in FFmpeg. This vulnerability allows unexpected additional CPU load and storage consumption, potentially leading to degraded performance or denial of service via the demuxing of arbitrary data as XBIN-formatted data without proper format validation.

Published 2025-01-06 · last modified 2026-06-17.

CVSS v3 metric

CVSS v3 base score 5.3 (Medium). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L.

EPSS exploit prediction

EPSS: 0.005 (38.1th percentile), scored 2026-09-29.

Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 38th percentile — 38.1% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.

EPSS over last 30 days · oldest: 0.004 · newest: 0.005 · change: +0.000

Affected products

Ffmpeg

Weakness classification (CWE)

Public proof-of-concept exploits

w4zu/Debian_

References

bugzilla.redhat.com/show_bug.cgi (issue-tracking, Exploit, Third Party Advisory, Issue Tracking)
af854a3a-2127-422b-91ae-364da2661108

Frequently asked questions

What is CVE-2023-6604?: CVE-2023-6604 is a medium-severity vulnerability in Ffmpeg, classified under Resource Injection. CVSS score: 5.3/10. Published 2025-01-06.
How severe is CVE-2023-6604?: Medium severity. CVSS v3 base score is 5.3 out of 10.
Is CVE-2023-6604 known to be exploited?: 1 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.