Integer Overflow or Wraparound Affecting ffmpeg package, versions <7:8.1-1


Severity

Recommended
0.0
critical
0
10

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Threat Intelligence

EPSS
0.13% (4th percentile)

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  • Snyk IDSNYK-DEBIANUNSTABLE-FFMPEG-16093881
  • published17 Apr 2026
  • disclosed16 Apr 2026

Introduced: 16 Apr 2026

CVE-2026-40962  (opens in a new tab)
CWE-190  (opens in a new tab)

How to fix?

Upgrade Debian:unstable ffmpeg to version 7:8.1-1 or higher.

NVD Description

Note: Versions mentioned in the description apply only to the upstream ffmpeg package and not the ffmpeg package as distributed by Debian. See How to fix? for Debian:unstable relevant fixed versions and status.

FFmpeg before 8.1 has an integer overflow and resultant out-of-bounds write via CENC (Common Encryption) subsample data to libavformat/mov.c.

CVSS Base Scores

version 3.1