PT-2026-33237 · FFmpeg · Ffmpeg

Published 2026-04-16 · Updated 2026-04-16 · CVE-2026-40962

Positive Technologies (AI Summary)

CVSS v3.1

4.9

Medium

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

Name of the Vulnerable Software and Affected Versions FFmpeg versions prior to 8.1

Description An integer overflow exists in the CENC (Common Encryption) subsample data processing within the libavformat/mov.c component, which can lead to an out-of-bounds write.

Recommendations Update to version 8.1 or later.

Fix

Integer Overflow

Weakness Enumeration

CWE-190

Related Identifiers

CVE-2026-40962

Affected Products

Ffmpeg

References · 5

• https://nvd.nist.gov/vuln/detail/CVE-2026-40962 · Security Note
• https://twitter.com/NewsNerdie/status/2044687867251769417 · Twitter Post
• https://twitter.com/CVEnew/status/2044701592696549531 · Twitter Post
• https://twitter.com/VulmonFeeds/status/2044640995699007610 · Twitter Post
• https://code.ffmpeg.org/FFmpeg/FFmpeg/pulls/22348 · Note