CVE-2026-40962

medium

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.

References

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

Details

Source: Mitre, NVD

Published: 2026-04-16

Updated: 2026-04-16

Risk Information

CVSS v2

Base Score: 3.7

Vector: CVSS2#AV:L/AC:H/Au:N/C:P/I:P/A:P

Severity: Low

CVSS v3

Base Score: 4.9

Vector: CVSS:3.1/AV:L/AC:H/PR:N/UI:N/S:U/C:L/I:L/A:L

Severity: Medium

EPSS

EPSS: 0.00003