CVE-2021-38666

HighCVSS 8.8/10Last modified Aug 19, 2026

Description

Remote Desktop Client Remote Code Execution Vulnerability

Metrics

CVSS 3.1 8.8/10CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H

Affected software

VendorProductVersions
MicrosoftRemote Desktop client for Windows Desktop-
MicrosoftWindows 10 Version 1507>= 10.0.10240.0, < 10.0.10240.19119
MicrosoftWindows 10 Version 1607>= 10.0.14393.0, < 10.0.14393.4770
MicrosoftWindows 10 Version 1809>= 10.0.17763.0, < 10.0.17763.2300
MicrosoftWindows 10 Version 1809>= 10.0.0, < 10.0.17763.2300
MicrosoftWindows 10 Version 1909>= 10.0.0, < 10.0.18363.1916
MicrosoftWindows 10 Version 2004>= 10.0.0, < 10.0.19041.1348
MicrosoftWindows 10 Version 20H2>= 10.0.0, < 10.0.19042.1348
MicrosoftWindows 10 Version 21H1>= 10.0.0, < 10.0.19043.1348
MicrosoftWindows 11 version 21H2>= 10.0.22000.0, < 10.0.22000.318
MicrosoftWindows 7>= 6.1.0, < 6.1.7601.25769
MicrosoftWindows 7 Service Pack 1>= 6.1.0, < 6.1.7601.25769
MicrosoftWindows 8.1>= 6.3.0, < 6.3.9600.20174
MicrosoftWindows Server 2008 R2 Service Pack 1>= 6.1.7601.0, < 6.1.7601.25769
MicrosoftWindows Server 2008 R2 Service Pack 1 (Server Core installation)>= 6.1.7601.0, < 6.1.7601.25769
MicrosoftWindows Server 2008 Service Pack 2>= 6.0.6003.0, < 6.0.6003.21282
MicrosoftWindows Server 2008 Service Pack 2 (Server Core installation)>= 6.0.6003.0, < 6.0.6003.21282
MicrosoftWindows Server 2012>= 6.2.9200.0, < 6.2.9200.23517
MicrosoftWindows Server 2012 (Server Core installation)>= 6.2.9200.0, < 6.2.9200.23517
MicrosoftWindows Server 2012 R2>= 6.3.9600.0, < 6.3.9600.20174
MicrosoftWindows Server 2012 R2 (Server Core installation)>= 6.3.9600.0, < 6.3.9600.20174
MicrosoftWindows Server 2016>= 10.0.14393.0, < 10.0.14393.4770
MicrosoftWindows Server 2016 (Server Core installation)>= 10.0.14393.0, < 10.0.14393.4770
MicrosoftWindows Server 2019>= 10.0.17763.0, < 10.0.17763.2300
MicrosoftWindows Server 2019 (Server Core installation)>= 10.0.17763.0, < 10.0.17763.2300
MicrosoftWindows Server 2022>= 10.0.20348.0, < 10.0.20348.350
MicrosoftWindows Server version 2004>= 10.0.0, < 10.0.19041.1348
MicrosoftWindows Server version 20H2>= 10.0.0, < 10.0.19041.1348

References

Timeline

Published
Nov 10, 2021
Last modified
Aug 19, 2026
NVD status
Modified

Related CVEs from 2021

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CVE-2021-38666: High severity, CVSS 8.8 | Vulnix