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CVE-2018-12458

21
FAUCET Score

CVE-2018-12458 describes a denial-of-service vulnerability in FFmpeg versions 2.8 and 4.0, specifically within the libavcodec/mpeg4videoenc.c component. An improper integer type in the mpeg4_encode_gop_header function can be triggered by converting a specially crafted AVI file to MPEG4, leading to an assertion violation. This vulnerability has a CVSSv3 score of 6.5 (Medium), indicating it can be exploited remotely with low attack complexity, requiring user interaction, and resulting in high availability impact. There is no evidence of active exploitation, public exploit code (Metasploit, Nuclei, ExploitDB), or significant community discussion or media coverage surrounding this CVE.

Impacted Technologies

VendorProductVersion(s)CPE
2.8CPE matchmatch criteria
cpe:2.3:a:ffmpeg:ffmpeg:2.8:*:*:*:*:*:*:*
4.0CPE matchmatch criteria
cpe:2.3:a:ffmpeg:ffmpeg:4.0:*:*:*:*:*:*:*
9.0CPE matchmatch criteria
cpe:2.3:o:debian:debian_linux:9.0:*:*:*:*:*:*:*

CVSS Data

CVSS version used by this source: 3.1

6.5MEDIUM

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

Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
NONE
User Interaction
REQUIRED
Scope
UNCHANGED
Confidentiality Impact
NONE
Integrity Impact
NONE
Availability Impact
HIGH
Exploitability Score
2.8
Impact Score
3.6
CvssVersion
3.1

Exploit Intelligence

EPSS Score
1.53%
Probability of exploitation in next 30 days
EPSS Percentile
72.2%
Percentile rank of EPSS score among Peer Group
As of 2026-07-28
Model: v2026.06.15
This CVE's current EPSS score of 0.0153 is in the 84th percentile among its peer group of 26,236 CVEs.

Social Chatter

The average CVE in this peer group has 0.0 Twitter, 0.0 Reddit, 0.1 Bluesky, 0.0 Mastodon, and 0.1 GitHub mentions.

Media Mentions

No media coverage found for this CVE.

The average CVE in this peer group has 0.1 InfoSec Media, 0.0 Vendor Blog, and 0.0 Security Researcher mentions.

Remediation

Patch Available

Vendor Patches (1)

github_advisorypatch availablevia nvd_reference
View patch

References

github.com / FFmpeg/FFmpeg/commit/6bbef938839adc55e8e048bc9cc2e0fafe2064df
PatchThird Party Advisory
github.com / FFmpeg/FFmpeg/commit/e1182fac1afba92a4975917823a5f644bee7e6e8
Issue TrackingPatchThird Party Advisory
debian.org / security/2018/dsa-4249
Third Party Advisory