CVE-2026-40962CRITICAL 9.8EPSS p3.2%

CVE-2026-40962CVE-2026-40962

Description

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

Scoring

CVSS 3.19.8 (CRITICAL)
VectorCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
EPSS0.13% probability of exploitation · percentile 3.2% · 2026-06-19T12:03:05Z
Published2026-04-16
Last modified2026-04-20

Underlying weaknesses· 1

CWE-190

References

  1. https://code.ffmpeg.org/FFmpeg/FFmpeg/pulls/22348

1

TypeTargetConfidenceTier
WeaknessInteger Overflow or Wraparoundcwe-1900%live

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Sourced from NVD + FIRST.org EPSS. Curated for EU compliance use cases by Adam Lundqvist, Founder at SQUR.