CVE-2019-9717: Libav

Medium severity, CVSS 6.5. EPSS: 1.3% chance of exploitation in the next 30 days.

In Libav 12.3, a denial of service in the subtitle decoder allows attackers to hog the CPU via a crafted video file in Matroska format, because srt_to_ass in libavcodec/srtdec.c has a complex format argument to sscanf.

Affected products

• Libav Libav: up to and including 12.3

Published 2019-09-19. Last modified 2026-06-17.