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Medium6.5Microsoft Server

Medium [CVE-2021-38624] Windows Key Storage Provider Security Feature Bypass Vulnerability

This medium-severity Microsoft Server advisory covers CVE-2021-38624 affecting Windows Server 2019 (Server Core installation), Windows Server 2022, Windows Server version 2004.

CVE-2021-38624 Published Sep 15, 2021Updated by vendor Aug 10, 2026
CVE-2021-38624
Affected products & platforms
Microsoft ServerWindows Server
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Summary

Windows Key Storage Provider Security Feature Bypass Vulnerability

Affected products named by the advisory: Windows Server 2019; Windows Server 2019 (Server Core installation); Windows Server 2022; Windows Server version 2004; and 1 more.

Affected products named by the advisory: Windows Server version 20H2.

Affected versions
  • Windows 10 Version 1809 10.0.17763.0 before 10.0.17763.2237
  • Windows 10 Version 1809 10.0.0 before 10.0.17763.2237
  • Windows 10 Version 1909 10.0.0 before 10.0.18363.1854
  • Windows 10 Version 2004 10.0.0 before 10.0.19041.1288
  • Windows 10 Version 20H2 10.0.0 before 10.0.19042.1288
  • Windows 10 Version 21H1 10.0.0 before 10.0.19043.1288
  • Windows 11 version 21H2 10.0.22000.0 before 10.0.22000.258
  • Windows Server 2019 10.0.17763.0 before 10.0.17763.2237
  • Windows Server 2019 (Server Core installation) 10.0.17763.0 before 10.0.17763.2237
  • Windows Server 2022 10.0.20348.0 before 10.0.20348.288
  • Windows Server version 2004 10.0.0 before 10.0.19041.1288
  • Windows Server version 20H2 10.0.0 before 10.0.19042.1288

Official advisory · high-confidence parse· fetched 2 hours ago·verify at source

Fixed versions
  • 10.0.17763.2237
  • 10.0.18363.1854
  • 10.0.19041.1288
  • 10.0.19042.1288
  • 10.0.19043.1288
  • 10.0.22000.258
  • 10.0.20348.288

Official advisory · high-confidence parse· fetched 2 hours ago·verify at source

Mitigation

Upgrade to a fixed release: 10.0.17763.2237, 10.0.18363.1854, 10.0.19041.1288, 10.0.19042.1288, 10.0.19043.1288, 10.0.22000.258. That is the remediation for this advisory.

The vendor advisory may list additional interim mitigations or workarounds not captured here — review it before change work.

Official advisory · high-confidence parse· fetched 2 hours ago·verify at source

Discussion(0)

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