The VC-2 Video Compression encoder in FFmpeg 3.0 and 3.4 allows remote attackers to cause a denial of service (out-of-bounds read) because of incorrect buffer padding for non-Haar wavelets, related to libavcodec/vc2enc.c and libavcodec/vc2enc_dwt.c.
https://github.com/FFmpeg/FFmpeg/commit/94e538aebbc9f9c529e8b1f2eda860cfb8c473b1
http://www.securityfocus.com/bid/101924
https://www.debian.org/security/2017/dsa-4049
http://git.videolan.org/?p=ffmpeg.git%3Ba=commit%3Bh=a94cb36ab2ad99d3a1331c9f91831ef593d94f74
Source: Mitre, NVD
Published: 2017-11-21
Updated: 2025-04-20
Base Score: 7.5
Vector: CVSS2#AV:N/AC:L/Au:N/C:P/I:P/A:P
Severity: High
Base Score: 9.8
Vector: CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Severity: Critical
EPSS: 0.01669