CVE-2021-30123: Ffmpeg

High severity, CVSS 8.8. EPSS: 3.4% chance of exploitation in the next 30 days.

FFmpeg <=4.3 contains a buffer overflow vulnerability in libavcodec through a crafted file that may lead to remote code execution.

Affected products

• Ffmpeg Ffmpeg: version 4.4 only

Published 2021-04-07. Last modified 2026-06-17.