CVE-2014-8549: Ffmpeg

High severity, CVSS 7.5. EPSS: 2.4% chance of exploitation in the next 30 days.

libavcodec/on2avc.c in FFmpeg before 2.4.2 does not constrain the number of channels to at most 2, which allows remote attackers to cause a denial of service (out-of-bounds access) or possibly have unspecified other impact via crafted On2 data.

Affected products

• Ffmpeg Ffmpeg: up to and including 2.4.1; version 0.3 only; version 0.3.1 only; version 0.3.2 only; version 0.3.3 only; version 0.3.4 only; …

Published 2014-11-05. Last modified 2026-06-17.