CVE-2026-40962

CRITICAL EPSS 3.3%
Published Apr 16, 20262mo ago · Modified Jun 17, 20261w ago
9.8 CVSS 3.1
Critical
Find Similar
Published Apr 16, 2026 2mo ago
Last Modified Jun 17, 2026 1w ago

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.

CVSS Details

Base Score
9.8
Exploitability
3.9
Impact
5.9
Vector string
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Attack Vector Network
Attack Complexity Low
Privileges Required None
User Interaction None
Scope Unchanged
Confidentiality High
Integrity High
Availability High

Threat Intelligence

EPSS Exploit Probability
3.3% percentile
Exploit & Patch Status
No Known Exploit
Patch Available

Weaknesses 1

CWE-190 Integer Overflow or Wraparound Numeric Error

Affected Products 1

VendorProductVersionRange
ffmpegffmpeg* <8.1

References 1

  • code.ffmpeg.org https://code.ffmpeg.org/FFmpeg/FFmpeg/pulls/22348
    Issue TrackingPatch

Remediation

  • code.ffmpeg.org https://code.ffmpeg.org/FFmpeg/FFmpeg/pulls/22348
    Issue TrackingPatch