CVE-2026-40962

—

CVSS 3.1

9.8 critical

EPSS

<1%p3

Published

Apr 16, 2026 (Apr 16, 2026)

Modified

Jun 17, 2026

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.

Vendors: ffmpeg
Products: ffmpeg
Weakness: CWE-190
Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

NVD CVE.org GitHub PoCs EPSS (0.1%)

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