CVE-2017-7866: Ffmpeg

Critical severity, CVSS 9.8. EPSS: 2.5% chance of exploitation in the next 30 days.

FFmpeg before 2017-01-23 has an out-of-bounds write caused by a stack-based buffer overflow related to the decode_zbuf function in libavcodec/pngdec.c.

Affected products

• Ffmpeg Ffmpeg: up to and including 2.8.9

Published 2017-04-14. Last modified 2026-06-17.