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High7.4Microsoft Server

High [CVE-2021-38665] Remote Desktop Protocol Client Information Disclosure Vulnerability

This high-severity Microsoft Server advisory covers CVE-2021-38665 affecting Remote Desktop client for Windows Desktop, Windows Server 2008 R2 Service Pack 1, Windows Server 2012 R2.

CVE-2021-38665 Published Nov 10, 2021Updated by vendor Aug 19, 2026
CVE-2021-38665
Affected products & platforms
Microsoft ServerWindows Server
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Summary

Remote Desktop Protocol Client Information Disclosure Vulnerability

Affected products named by the advisory: Remote Desktop client for Windows Desktop; Windows Server 2008 R2 Service Pack 1; Windows Server 2012; Windows Server 2012 R2; and 3 more.

Affected products named by the advisory: Windows Server 2016; Windows Server 2019; Windows Server 2022.

Affected versions
  • Remote Desktop client for Windows Desktop 1.2.0.0 before 1.2.2600
  • Windows 10 Version 1507 10.0.10240.0 before 10.0.10240.19119
  • Windows 10 Version 1607 10.0.14393.0 before 10.0.14393.4770
  • Windows 10 Version 1809 10.0.17763.0 before 10.0.17763.2300
  • Windows 10 Version 1809 10.0.0 before 10.0.17763.2300
  • Windows 10 Version 1909 10.0.0 before 10.0.18363.1916
  • Windows 10 Version 2004 10.0.0 before 10.0.19041.1348
  • Windows 10 Version 20H2 10.0.0 before 10.0.19042.1348
  • Windows 10 Version 21H1 10.0.0 before 10.0.19043.1348
  • Windows 11 version 21H2 10.0.22000.0 before 10.0.22000.318
  • Windows 7 6.1.0 before 6.1.7601.25769
  • Windows 7 Service Pack 1 6.1.0 before 6.1.7601.25769

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

Fixed versions
  • 1.2.2600
  • 10.0.10240.19119
  • 10.0.14393.4770
  • 10.0.17763.2300
  • 10.0.18363.1916
  • 10.0.19041.1348
  • 10.0.19042.1348
  • 10.0.19043.1348
  • 10.0.22000.318
  • 6.1.7601.25769
  • 6.3.9600.20174
  • 6.2.9200.23517

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

Mitigation

Upgrade to a fixed release: 1.2.2600, 10.0.10240.19119, 10.0.14393.4770, 10.0.17763.2300, 10.0.18363.1916, 10.0.19041.1348. 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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