CVE-2018-4022
CVSS v3
7.8
HIGH
EPSS Score
1.5 %
exploit probability, as of 2026-09-25
CISA KEV
No
known exploited
Exploitation
—
SSVC status
Description
A use-after-free vulnerability exists in the way MKVToolNix MKVINFO v25.0.0 handles the MKV (matroska) file format. A specially crafted MKV file can cause arbitrary code execution in the context of the current user.
Technical details
- Published
- 2018-10-26
Frequently asked questions
What is CVE-2018-4022?
A use-after-free vulnerability exists in the way MKVToolNix MKVINFO v25.0.0 handles the MKV (matroska) file format. A specially crafted MKV file can cause arbitrary code execution in the context of the current user.
Is CVE-2018-4022 actively exploited?
Active exploitation of CVE-2018-4022 has not been confirmed. Its EPSS score was 1.5% on 2026-09-25, the estimated probability of exploitation in the next 30 days.
What is the CVSS score for CVE-2018-4022?
CVE-2018-4022 has a CVSS v3 base score of 7.8 (HIGH severity).
Is CVE-2018-4022 affecting your environment?
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