CVE-2019-19721

Name: CVE-2019-19721
Creator: NVD / NIST
Published: 2020-05-15T18:15:13.277+00:00
License: https://creativecommons.org/publicdomain/zero/1.0/

HIGHCVSS 7.8/10EPSS 1.93%

Last modified Jun 17, 2026

CVE-2019-19721 is a high-severity vulnerability rated 7.8/10 on the CVSS scale. An off-by-one error in the DecodeBlock function in codec/sdl_image.c in VideoLAN VLC media player before 3.0.9 allows remote attackers to cause a denial of service (memory corruption) via a crafted image file. NOTE: this may be related to the SDL_Image product.. EPSS estimates a 1.93% chance of exploitation in the next 30 days.

Description

An off-by-one error in the DecodeBlock function in codec/sdl_image.c in VideoLAN VLC media player before 3.0.9 allows remote attackers to cause a denial of service (memory corruption) via a crafted image file. NOTE: this may be related to the SDL_Image product.

Metrics

CVSS 3.1

7.8/10

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

EPSS Probability

1.93%

77.4th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

Affected Software

Vendor	Product	Versions
Videolan	Vlc Media Player	< 3.0.9

References

http://hg.libsdl.org/SDL_image/Release Notes, Third Party Advisory
https://bugs.gentoo.org/721940Exploit, Patch, Third Party Advisory
https://git.videolan.org/?p=vlc/vlc-3.0.git%3Ba=commit%3Bh=72afe7ebd8305bf4f5360293b8621cde52ec506b
https://www.videolan.org/security/Vendor Advisory
http://hg.libsdl.org/SDL_image/Release Notes, Third Party Advisory
https://bugs.gentoo.org/721940Exploit, Patch, Third Party Advisory
https://git.videolan.org/?p=vlc/vlc-3.0.git%3Ba=commit%3Bh=72afe7ebd8305bf4f5360293b8621cde52ec506b
https://www.videolan.org/security/Vendor Advisory

Timeline

Published: May 15, 2020
Last Modified: Jun 17, 2026
Status: Modified

Frequently Asked Questions

What is CVE-2019-19721?

How severe is CVE-2019-19721?

CVE-2019-19721 has a CVSS score of 7.8/10 (HIGH severity). The EPSS model estimates a 1.93% probability of exploitation in the next 30 days.

How do I fix CVE-2019-19721?

Check the vendor references and advisories linked above for patched versions and mitigation guidance. You can also run a Strix scan to test if your systems are affected.

Are you affected by CVE-2019-19721?

Run a free Strix scan to check your systems for this vulnerability.

Scan your code now

Source: NVD / NIST