CVE-2019-11338

Name: CVE-2019-11338
Creator: NVD / NIST
Published: 2019-04-19T00:29:00.23+00:00
License: https://creativecommons.org/publicdomain/zero/1.0/

HIGHCVSS 8.8/10EPSS 2.35%

Last modified Jun 17, 2026

CVE-2019-11338 is a high-severity vulnerability rated 8.8/10 on the CVSS scale. libavcodec/hevcdec.c in FFmpeg 3.4 and 4.1.2 mishandles detection of duplicate first slices, which allows remote attackers to cause a denial of service (NULL pointer dereference and out-of-array access) or possibly have unspecified other impact via crafted HEVC data.. EPSS estimates a 2.35% chance of exploitation in the next 30 days.

Description

libavcodec/hevcdec.c in FFmpeg 3.4 and 4.1.2 mishandles detection of duplicate first slices, which allows remote attackers to cause a denial of service (NULL pointer dereference and out-of-array access) or possibly have unspecified other impact via crafted HEVC data.

Metrics

CVSS 3.1

8.8/10

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

EPSS Probability

2.35%

81.6th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

CWE-476

Affected Software

Vendor	Product	Versions
Ffmpeg	Ffmpeg	3.4
Ffmpeg	Ffmpeg	4.1.2
Debian	Debian Linux	8.0
Debian	Debian Linux	9.0
Novell	Suse Package Hub For Suse Linux Enterprise	12
Canonical	Ubuntu Linux	16.04
Canonical	Ubuntu Linux	18.04
Canonical	Ubuntu Linux	18.10
Canonical	Ubuntu Linux	19.04
Canonical	Ubuntu Linux	20.04

References

http://lists.opensuse.org/opensuse-security-announce/2020-01/msg00012.htmlMailing List, Third Party Advisory
http://www.securityfocus.com/bid/108034Broken Link
https://github.com/FFmpeg/FFmpeg/commit/54655623a82632e7624714d7b2a3e039dc5faa7ePatch, Third Party Advisory
https://github.com/FFmpeg/FFmpeg/commit/9ccc633068c6fe76989f487c8932bd11886ad65bPatch, Third Party Advisory
https://lists.debian.org/debian-lts-announce/2019/05/msg00043.htmlMailing List, Third Party Advisory
https://seclists.org/bugtraq/2019/May/60Mailing List, Third Party Advisory
https://usn.ubuntu.com/3967-1/Third Party Advisory
https://usn.ubuntu.com/4431-1/Third Party Advisory
https://www.debian.org/security/2019/dsa-4449Third Party Advisory
http://lists.opensuse.org/opensuse-security-announce/2020-01/msg00012.htmlMailing List, Third Party Advisory
http://www.securityfocus.com/bid/108034Broken Link
https://github.com/FFmpeg/FFmpeg/commit/54655623a82632e7624714d7b2a3e039dc5faa7ePatch, Third Party Advisory
https://github.com/FFmpeg/FFmpeg/commit/9ccc633068c6fe76989f487c8932bd11886ad65bPatch, Third Party Advisory
https://lists.debian.org/debian-lts-announce/2019/05/msg00043.htmlMailing List, Third Party Advisory
https://seclists.org/bugtraq/2019/May/60Mailing List, Third Party Advisory
https://usn.ubuntu.com/3967-1/Third Party Advisory
https://usn.ubuntu.com/4431-1/Third Party Advisory
https://www.debian.org/security/2019/dsa-4449Third Party Advisory

Timeline

Published: Apr 19, 2019
Last Modified: Jun 17, 2026
Status: Modified

Frequently Asked Questions

What is CVE-2019-11338?

How severe is CVE-2019-11338?

CVE-2019-11338 has a CVSS score of 8.8/10 (HIGH severity). The EPSS model estimates a 2.35% probability of exploitation in the next 30 days.

How do I fix CVE-2019-11338?

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-2019-11338?

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

Scan your code now

Source: NVD / NIST