How severe is CVE-2022-21839?

CVE-2022-21839 has a CVSS 3.x base score of 6.1, rated medium severity. It is exploitable over local access with low attack complexity, requires low privileges and no user interaction. Impact on confidentiality is none, integrity low, and availability high.

Is CVE-2022-21839 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 2% (71st percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2022-21839?

CVE-2022-21839 primarily affects Microsoft Windows 10. In total, 2 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.

How do I fix CVE-2022-21839?

Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.

When was CVE-2022-21839 published?

CVE-2022-21839 was published on 2022-01-11 and last updated on 2026-06-17.

CVE-2022-21839

CVE-2022-21839 is a medium-severity vulnerability in Microsoft Windows 10 with a CVSS 3.x base score of 6.1. It is not currently listed as actively exploited by CISA, and its EPSS exploit-prediction score is low.

Key facts

Severity: Medium (CVSS 3.x base score 6.1)
CVSS v2: 2.1
EPSS exploit prediction: 2% (71st percentile)
Actively exploited: Not listed in CISA KEV
Affected product: Microsoft Windows 10
Published: 2022-01-11
Last modified: 2026-06-17

Description

Windows Event Tracing Discretionary Access Control List Denial of Service Vulnerability

Frequently asked questions

What is CVE-2022-21839?: Windows Event Tracing Discretionary Access Control List Denial of Service Vulnerability
How severe is CVE-2022-21839?: CVE-2022-21839 has a CVSS 3.x base score of 6.1, rated medium severity. It is exploitable over local access with low attack complexity, requires low privileges and no user interaction. Impact on confidentiality is none, integrity low, and availability high.
Is CVE-2022-21839 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 2% (71st percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2022-21839?: CVE-2022-21839 primarily affects Microsoft Windows 10. In total, 2 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.
How do I fix CVE-2022-21839?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
When was CVE-2022-21839 published?: CVE-2022-21839 was published on 2022-01-11 and last updated on 2026-06-17.

References

Affected products (2)

cpe:2.3:o:microsoft:windows_10:1809:*:*:*:*:*:*:*
cpe:2.3:o:microsoft:windows_server_2019:-:*:*:*:*:*:*:*

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