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.
Published: 2026-04-16
Score: 4.9 Medium
EPSS: < 1% Very Low
KEV: No
Impact: Memory Corruption
Action: Apply Patch
AI Analysis

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Remediation

No vendor fix or workaround currently provided.

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Tracking

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Advisories

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History

Fri, 17 Apr 2026 00:15:00 +0000

Type Values Removed Values Added
Title FFmpeg: FFmpeg: Integer overflow and out-of-bounds write via CENC subsample data
Weaknesses CWE-787
References
Metrics threat_severity

None

threat_severity

Moderate


Thu, 16 Apr 2026 13:15:00 +0000

Type Values Removed Values Added
Metrics ssvc

{'options': {'Automatable': 'no', 'Exploitation': 'none', 'Technical Impact': 'partial'}, 'version': '2.0.3'}


Thu, 16 Apr 2026 01:45:00 +0000

Type Values Removed Values Added
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.
First Time appeared Ffmpeg
Ffmpeg ffmpeg
Weaknesses CWE-190
CPEs cpe:2.3:a:ffmpeg:ffmpeg:*:*:*:*:*:*:*:*
Vendors & Products Ffmpeg
Ffmpeg ffmpeg
References
Metrics cvssV3_1

{'score': 4.9, 'vector': 'CVSS:3.1/AV:L/AC:H/PR:N/UI:N/S:U/C:L/I:L/A:L'}


cve-icon MITRE

Status: PUBLISHED

Assigner: mitre

Published:

Updated: 2026-04-16T12:31:48.767Z

Reserved: 2026-04-16T01:33:36.641Z

Link: CVE-2026-40962

cve-icon Vulnrichment

Updated: 2026-04-16T12:20:14.391Z

cve-icon NVD

Status : Analyzed

Published: 2026-04-16T02:16:12.227

Modified: 2026-04-20T19:54:35.317

Link: CVE-2026-40962

cve-icon Redhat

Severity : Moderate

Publid Date: 2026-04-16T01:33:37Z

Links: CVE-2026-40962 - Bugzilla

cve-icon OpenCVE Enrichment

Updated: 2026-04-17T06:00:09Z

Weaknesses