CVE-2018-12458

Name: CVE-2018-12458
Creator: NVD / NIST
Published: 2018-06-15T15:29:00.217+00:00
License: https://creativecommons.org/publicdomain/zero/1.0/

MEDIUMCVSS 6.5/10EPSS 1.53%

Last modified Jun 17, 2026

CVE-2018-12458 is a medium-severity vulnerability rated 6.5/10 on the CVSS scale. An improper integer type in the mpeg4_encode_gop_header function in libavcodec/mpeg4videoenc.c in FFmpeg 2.8 and 4.0 may trigger an assertion violation while converting a crafted AVI file to MPEG4, leading to a denial of service.. EPSS estimates a 1.53% chance of exploitation in the next 30 days.

Description

An improper integer type in the mpeg4_encode_gop_header function in libavcodec/mpeg4videoenc.c in FFmpeg 2.8 and 4.0 may trigger an assertion violation while converting a crafted AVI file to MPEG4, leading to a denial of service.

Metrics

CVSS 3.1

6.5/10

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

EPSS Probability

1.53%

71.6th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

CWE-20

Affected Software

Vendor	Product	Versions
Ffmpeg	Ffmpeg	2.8
Ffmpeg	Ffmpeg	4.0
Debian	Debian Linux	9.0

References

https://github.com/FFmpeg/FFmpeg/commit/6bbef938839adc55e8e048bc9cc2e0fafe2064dfPatch, Third Party Advisory
https://github.com/FFmpeg/FFmpeg/commit/e1182fac1afba92a4975917823a5f644bee7e6e8Issue Tracking, Patch, Third Party Advisory
https://www.debian.org/security/2018/dsa-4249Third Party Advisory
https://github.com/FFmpeg/FFmpeg/commit/6bbef938839adc55e8e048bc9cc2e0fafe2064dfPatch, Third Party Advisory
https://github.com/FFmpeg/FFmpeg/commit/e1182fac1afba92a4975917823a5f644bee7e6e8Issue Tracking, Patch, Third Party Advisory
https://www.debian.org/security/2018/dsa-4249Third Party Advisory

Timeline

Published: Jun 15, 2018
Last Modified: Jun 17, 2026
Status: Modified

Frequently Asked Questions

What is CVE-2018-12458?

How severe is CVE-2018-12458?

CVE-2018-12458 has a CVSS score of 6.5/10 (MEDIUM severity). The EPSS model estimates a 1.53% probability of exploitation in the next 30 days.

How do I fix CVE-2018-12458?

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-2018-12458?

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

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Source: NVD / NIST