VULNERABILITY INTELLIGENCE

CVE-2019-9721

CVSS score6.5 MEDIUM

EPSS probability1.44%

CISA KEVNot currently listed

Published2019-03-12

Last modified2026-06-17

Description

A denial of service in the subtitle decoder in FFmpeg 3.2 and 4.1 allows attackers to hog the CPU via a crafted video file in Matroska format, because handle_open_brace in libavcodec/htmlsubtitles.c has a complex format argument to sscanf.