What’s Vulnerable › Vulnerabilities

CVE-2022-21839: Windows Event Tracing Discretionary Access Control List Denial of Service Vulnerability

• Severity: medium (CVSS 5.5 v3.1)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 1.5% probability of exploitation in the next 30 days
• Public exploit or detection template: none known
• Published: 2022-01-11 · updated 2026-06-17

Description

Windows Event Tracing Discretionary Access Control List Denial of Service Vulnerability

Affected products

• Microsoft Windows 10 Version 1607: 1809
• Microsoft Windows Server 2019: all versions
• Microsoft Windows 10: from 10.0.17763.0 before 10.0.17763.2452 — fixed in 10.0.17763.2452
• Microsoft Windows Server 2019: from 10.0.17763.0 before 10.0.17763.2452 — fixed in 10.0.17763.2452

How to fix

Upgrade to a fixed version: Microsoft Windows 10 10.0.17763.2452; Microsoft Windows Server 2019 10.0.17763.2452. Check the vendor advisory for mitigations.

References

• https://msrc.microsoft.com/update-guide/vulnerability/CVE-2022-21839
• https://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2022-21839

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