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CVE-2022-21910: Microsoft Cluster Port Driver Elevation of Privilege Vulnerability

• Severity: medium (CVSS 4.6 v2.0)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 0.6% probability of exploitation in the next 30 days
• Public exploit or detection template: none known
• Published: 2022-01-11 · updated 2026-06-17

Description

Microsoft Cluster Port Driver Elevation of Privilege Vulnerability

Affected products

• Microsoft Windows Server: 20h2, 2022
• Microsoft Windows Server 2016: all versions
• Microsoft Windows Server 2019: all versions
• Microsoft Windows Server 2016: from 10.0.14393.0 before 10.0.14393.4886 — fixed in 10.0.14393.4886
• Microsoft Windows Server 2019: from 10.0.17763.0 before 10.0.17763.2452 — fixed in 10.0.17763.2452
• Microsoft Windows Server 2022: from 10.0.20348.0 before 10.0.20348.469 — fixed in 10.0.20348.469
• Microsoft Windows Server version 20H2: from 10.0.0 before 10.0.19042.1466 — fixed in 10.0.19042.1466

How to fix

Upgrade to a fixed version: Microsoft Windows Server 2016 10.0.14393.4886; Microsoft Windows Server 2019 10.0.17763.2452; Microsoft Windows Server 2022 10.0.20348.469; Microsoft Windows Server version 20H2 10.0.19042.1466. Check the vendor advisory for mitigations.

References

• https://msrc.microsoft.com/update-guide/vulnerability/CVE-2022-21910
• https://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2022-21910

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