CVE-2019-9717

6.5 mediumEPSS 1.3%

Medium (6.5) in libav libav. 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.

Severity

CVSS 3.1

6.5 medium

CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H

EPSS: 1.3% chance of exploitation in the next 30 days; higher than 69% of CVEs (scores of 2026-10-31)
CWE: CWE-400
Published: 2019-09-19
Modified: 2026-06-17
Record from: the NVD, synced 2026-10-19

Affected

libav:libav

References

https://github.com/libav/libav/blob/df744e3cf66548c9167ea857104a29d2ea92819e/libavcodec/srtdec.c#L90
https://lgtm.com/security/
https://github.com/libav/libav/blob/df744e3cf66548c9167ea857104a29d2ea92819e/libavcodec/srtdec.c#L90
https://lgtm.com/security/

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