CVE-2015-6821: Ffmpeg

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

The ff_mpv_common_init function in libavcodec/mpegvideo.c in FFmpeg before 2.7.2 does not properly maintain the encoding context, which allows remote attackers to cause a denial of service (invalid pointer access) or possibly have unspecified other impact via crafted MPEG data.

Affected products

• Ffmpeg Ffmpeg: up to and including 2.7.1

Published 2015-09-06. Last modified 2026-06-17.