How severe is CVE-2018-4022?

CVE-2018-4022 has a CVSS 3.x base score of 7.8, rated high severity. It is exploitable over local access with low attack complexity, requires no privileges and user interaction. Impact on confidentiality is high, integrity high, and availability high.

Is CVE-2018-4022 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 2% (72nd percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2018-4022?

CVE-2018-4022 affects Mkvtoolnix Mkvinfo. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2018-4022?

Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its high severity, prioritise patching exposed systems.

When was CVE-2018-4022 published?

CVE-2018-4022 was published on 2018-10-26 and last updated on 2026-06-17.

CVE-2018-4022

CVE-2018-4022 is a high-severity vulnerability in Mkvtoolnix Mkvinfo with a CVSS 3.x base score of 7.8. It is not currently listed as actively exploited by CISA, and its EPSS exploit-prediction score is low. The underlying weakness is classified as CWE-416.

Key facts

Severity: High (CVSS 3.x base score 7.8)
CVSS v2: 6.8
EPSS exploit prediction: 2% (72nd percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-416
Affected product: Mkvtoolnix Mkvinfo
Published: 2018-10-26
Last modified: 2026-06-17

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.

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.
How severe is CVE-2018-4022?: CVE-2018-4022 has a CVSS 3.x base score of 7.8, rated high severity. It is exploitable over local access with low attack complexity, requires no privileges and user interaction. Impact on confidentiality is high, integrity high, and availability high.
Is CVE-2018-4022 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 2% (72nd percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2018-4022?: CVE-2018-4022 affects Mkvtoolnix Mkvinfo. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2018-4022?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its high severity, prioritise patching exposed systems.
When was CVE-2018-4022 published?: CVE-2018-4022 was published on 2018-10-26 and last updated on 2026-06-17.

References

https://talosintelligence.com/vulnerability_reports/TALOS-2018-0694

Affected products (1)

cpe:2.3:a:mkvtoolnix:mkvinfo:25.0.0:*:*:*:*:*:*:*

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