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TI-2021-13557 Aliases CVE-2021-34535GHSA-6j5r-87mw-77mg

Remote Desktop Client Remote Code Execution Vulnerability

Priority MEDIUM 58Published · Updated

Key facts

Attack vector
Network
Privileges required
None
User interaction
Required
Attack complexity
Low
Impact type
—
Confidentiality · integrity · availability
High · High · High
Fix status
Fixed

Attack profile from CVSS 3.1 · CNA. Fix status from CNA.

Summary

Remote Desktop Client Remote Code Execution Vulnerability

Why it matters now

EPSS 0.21858 97th percentileScored 2026-11-07
Fix Fixed Remote Desktop client for Windows Desktop (Microsoft): publicationWindows 10 Version 1507 (Microsoft): 10.0.10240.19022+14 more products

SSVC decision points

Not available: CISA has not published SSVC decision points for this record.

Affected products

VendorProductAffected versionsFixed inStatusSource
MicrosoftRemote Desktop client for Windows Desktop1.2.0.0 to before publicationpublicationPatch availableCNA
MicrosoftWindows 10 Version 150710.0.10240.0 to before 10.0.10240.1902210.0.10240.19022Patch availableCNA
MicrosoftWindows 10 Version 160710.0.14393.0 to before 10.0.14393.458310.0.14393.4583Patch availableCNA
MicrosoftWindows 10 Version 180910.0.17763.0 to before 10.0.17763.211410.0.17763.2114Patch availableCNA
MicrosoftWindows 10 Version 180910.0.0 to before 10.0.17763.211410.0.17763.2114Patch availableCNA
MicrosoftWindows 10 Version 190910.0.0 to before 10.0.18363.173410.0.18363.1734Patch availableCNA
MicrosoftWindows 10 Version 200410.0.0 to before 10.0.19041.116510.0.19041.1165Patch availableCNA
MicrosoftWindows 10 Version 20H210.0.0 to before 10.0.19042.116510.0.19042.1165Patch availableCNA
MicrosoftWindows 10 Version 21H110.0.0 to before 10.0.19043.116510.0.19043.1165Patch availableCNA
MicrosoftWindows 76.1.0 to before 6.1.7601.256856.1.7601.25685Patch availableCNA
MicrosoftWindows 7 Service Pack 16.1.0 to before 6.1.7601.256856.1.7601.25685Patch availableCNA
MicrosoftWindows 8.16.3.0 to before 6.3.9600.200946.3.9600.20094Patch availableCNA
MicrosoftWindows Server 2008 R2 Service Pack 16.1.7601.0 to before 6.1.7601.256856.1.7601.25685Patch availableCNA
MicrosoftWindows Server 20126.2.9200.0 to before 6.2.9200.234356.2.9200.23435Patch availableCNA
MicrosoftWindows Server 2012 R26.3.9600.0 to before 6.3.9600.200946.3.9600.20094Patch availableCNA
MicrosoftWindows Server 201610.0.14393.0 to before 10.0.14393.458310.0.14393.4583Patch availableCNA
MicrosoftWindows Server 201910.0.17763.0 to before 10.0.17763.211410.0.17763.2114Patch availableCNA
  • Remote Desktop client for Windows Desktop VendorMicrosoft Affected 1.2.0.0 to before publication Fixed in publication Patch available CNA
  • Windows 10 Version 1507 VendorMicrosoft Affected 10.0.10240.0 to before 10.0.10240.19022 Fixed in 10.0.10240.19022 Patch available CNA
  • Windows 10 Version 1607 VendorMicrosoft Affected 10.0.14393.0 to before 10.0.14393.4583 Fixed in 10.0.14393.4583 Patch available CNA
  • Windows 10 Version 1809 VendorMicrosoft Affected 10.0.17763.0 to before 10.0.17763.2114 Fixed in 10.0.17763.2114 Patch available CNA
  • Windows 10 Version 1809 VendorMicrosoft Affected 10.0.0 to before 10.0.17763.2114 Fixed in 10.0.17763.2114 Patch available CNA
  • Windows 10 Version 1909 VendorMicrosoft Affected 10.0.0 to before 10.0.18363.1734 Fixed in 10.0.18363.1734 Patch available CNA
  • Windows 10 Version 2004 VendorMicrosoft Affected 10.0.0 to before 10.0.19041.1165 Fixed in 10.0.19041.1165 Patch available CNA
  • Windows 10 Version 20H2 VendorMicrosoft Affected 10.0.0 to before 10.0.19042.1165 Fixed in 10.0.19042.1165 Patch available CNA
  • Windows 10 Version 21H1 VendorMicrosoft Affected 10.0.0 to before 10.0.19043.1165 Fixed in 10.0.19043.1165 Patch available CNA
  • Windows 7 VendorMicrosoft Affected 6.1.0 to before 6.1.7601.25685 Fixed in 6.1.7601.25685 Patch available CNA
  • Windows 7 Service Pack 1 VendorMicrosoft Affected 6.1.0 to before 6.1.7601.25685 Fixed in 6.1.7601.25685 Patch available CNA
  • Windows 8.1 VendorMicrosoft Affected 6.3.0 to before 6.3.9600.20094 Fixed in 6.3.9600.20094 Patch available CNA
  • Windows Server 2008 R2 Service Pack 1 VendorMicrosoft Affected 6.1.7601.0 to before 6.1.7601.25685 Fixed in 6.1.7601.25685 Patch available CNA
  • Windows Server 2012 VendorMicrosoft Affected 6.2.9200.0 to before 6.2.9200.23435 Fixed in 6.2.9200.23435 Patch available CNA
  • Windows Server 2012 R2 VendorMicrosoft Affected 6.3.9600.0 to before 6.3.9600.20094 Fixed in 6.3.9600.20094 Patch available CNA
  • Windows Server 2016 VendorMicrosoft Affected 10.0.14393.0 to before 10.0.14393.4583 Fixed in 10.0.14393.4583 Patch available CNA
  • Windows Server 2019 VendorMicrosoft Affected 10.0.17763.0 to before 10.0.17763.2114 Fixed in 10.0.17763.2114 Patch available CNA

CPE configurations NVD · 16

CPEVersionsRoleVendor
cpe:2.3:a:microsoft:remote_desktop_client:-:*:*:*:*:windows:*:*not specified by NVDVulnerableMicrosoft
cpe:2.3:o:microsoft:windows_10:-:*:*:*:*:*:*:*not specified by NVDVulnerableMicrosoft
cpe:2.3:o:microsoft:windows_10:20h2:*:*:*:*:*:*:*20h2VulnerableMicrosoft
cpe:2.3:o:microsoft:windows_10:21h1:*:*:*:*:*:*:*21h1VulnerableMicrosoft
cpe:2.3:o:microsoft:windows_10:1607:*:*:*:*:*:*:*1607VulnerableMicrosoft
cpe:2.3:o:microsoft:windows_10:1809:*:*:*:*:*:*:*1809VulnerableMicrosoft
cpe:2.3:o:microsoft:windows_10:1909:*:*:*:*:*:*:*1909VulnerableMicrosoft
cpe:2.3:o:microsoft:windows_10:2004:*:*:*:*:*:*:*2004VulnerableMicrosoft
cpe:2.3:o:microsoft:windows_7:-:sp1:*:*:*:*:*:*not specified by NVDVulnerableMicrosoft
cpe:2.3:o:microsoft:windows_8.1:-:*:*:*:*:*:*:*not specified by NVDVulnerableMicrosoft
  • cpe:2.3:a:microsoft:remote_desktop_client:-:*:*:*:*:windows:*:* Versions not specified by NVD Vulnerable ·Microsoft
  • cpe:2.3:o:microsoft:windows_10:-:*:*:*:*:*:*:* Versions not specified by NVD Vulnerable ·Microsoft
  • cpe:2.3:o:microsoft:windows_10:20h2:*:*:*:*:*:*:* Versions 20h2 Vulnerable ·Microsoft
  • cpe:2.3:o:microsoft:windows_10:21h1:*:*:*:*:*:*:* Versions 21h1 Vulnerable ·Microsoft
  • cpe:2.3:o:microsoft:windows_10:1607:*:*:*:*:*:*:* Versions 1607 Vulnerable ·Microsoft
  • cpe:2.3:o:microsoft:windows_10:1809:*:*:*:*:*:*:* Versions 1809 Vulnerable ·Microsoft
  • cpe:2.3:o:microsoft:windows_10:1909:*:*:*:*:*:*:* Versions 1909 Vulnerable ·Microsoft
  • cpe:2.3:o:microsoft:windows_10:2004:*:*:*:*:*:*:* Versions 2004 Vulnerable ·Microsoft
  • cpe:2.3:o:microsoft:windows_7:-:sp1:*:*:*:*:*:* Versions not specified by NVD Vulnerable ·Microsoft
  • cpe:2.3:o:microsoft:windows_8.1:-:*:*:*:*:*:*:* Versions not specified by NVD Vulnerable ·Microsoft
Show 6 more CPE
CPEVersionsRoleVendor
cpe:2.3:o:microsoft:windows_rt_8.1:-:*:*:*:*:*:*:*not specified by NVDVulnerableMicrosoft
cpe:2.3:o:microsoft:windows_server_2008:r2:sp1:*:*:*:*:x64:*r2 sp1VulnerableMicrosoft
cpe:2.3:o:microsoft:windows_server_2012:-:*:*:*:*:*:*:*not specified by NVDVulnerableMicrosoft
cpe:2.3:o:microsoft:windows_server_2012:r2:*:*:*:*:*:*:*r2VulnerableMicrosoft
cpe:2.3:o:microsoft:windows_server_2016:-:*:*:*:*:*:*:*not specified by NVDVulnerableMicrosoft
cpe:2.3:o:microsoft:windows_server_2019:-:*:*:*:*:*:*:*not specified by NVDVulnerableMicrosoft
  • cpe:2.3:o:microsoft:windows_rt_8.1:-:*:*:*:*:*:*:* Versions not specified by NVD Vulnerable ·Microsoft
  • cpe:2.3:o:microsoft:windows_server_2008:r2:sp1:*:*:*:*:x64:* Versions r2 sp1 Vulnerable ·Microsoft
  • cpe:2.3:o:microsoft:windows_server_2012:-:*:*:*:*:*:*:* Versions not specified by NVD Vulnerable ·Microsoft
  • cpe:2.3:o:microsoft:windows_server_2012:r2:*:*:*:*:*:*:* Versions r2 Vulnerable ·Microsoft
  • cpe:2.3:o:microsoft:windows_server_2016:-:*:*:*:*:*:*:* Versions not specified by NVD Vulnerable ·Microsoft
  • cpe:2.3:o:microsoft:windows_server_2019:-:*:*:*:*:*:*:* Versions not specified by NVD Vulnerable ·Microsoft

Remediation

  • Fix · CNA Remote Desktop client for Windows Desktop (Microsoft) Fixed in publication
  • Fix · CNA Windows 10 Version 1507 (Microsoft) Fixed in 10.0.10240.19022
  • Fix · CNA Windows 10 Version 1607 (Microsoft) Fixed in 10.0.14393.4583
  • Fix · CNA Windows 10 Version 1809 (Microsoft) Fixed in 10.0.17763.2114
  • Fix · CNA Windows 10 Version 1809 (Microsoft) Fixed in 10.0.17763.2114
  • Fix · CNA Windows 10 Version 1909 (Microsoft) Fixed in 10.0.18363.1734
  • Fix · CNA Windows 10 Version 2004 (Microsoft) Fixed in 10.0.19041.1165
  • Fix · CNA Windows 10 Version 20H2 (Microsoft) Fixed in 10.0.19042.1165
  • Fix · CNA Windows 10 Version 21H1 (Microsoft) Fixed in 10.0.19043.1165
  • Fix · CNA Windows 7 (Microsoft) Fixed in 6.1.7601.25685
  • Fix · CNA Windows 7 Service Pack 1 (Microsoft) Fixed in 6.1.7601.25685
  • Fix · CNA Windows 8.1 (Microsoft) Fixed in 6.3.9600.20094
  • Fix · CNA Windows Server 2008 R2 Service Pack 1 (Microsoft) Fixed in 6.1.7601.25685
  • Fix · CNA Windows Server 2012 (Microsoft) Fixed in 6.2.9200.23435
  • Fix · CNA Windows Server 2012 R2 (Microsoft) Fixed in 6.3.9600.20094
  • Fix · CNA Windows Server 2016 (Microsoft) Fixed in 10.0.14393.4583
  • Fix · CNA Windows Server 2019 (Microsoft) Fixed in 10.0.17763.2114

Timeline

  1. 2026-10-02 Threatist record created from CVE-2021-34535
  2. 2026-10-03 Alias added: GHSA-6j5r-87mw-77mg

References

Patch 2

  • TI-2019-00638 Path traversal in Microsoft Multiple CVSS 3.1HIGH 8.0
  • TI-2022-06374 Remote Desktop Client Remote Code Execution Vulnerability CVSS 3.1HIGH 8.8
  • TI-2025-19580 Remote Desktop Client Remote Code Execution Vulnerability CVSS 3.1HIGH 8.8
  • TI-2021-01386 Windows Remote Desktop Security Feature Bypass Vulnerability CVSS 3.1HIGH 8.8
  • TI-2026-31167 Remote Desktop Client Remote Code Execution Vulnerability CVSS 3.1HIGH 8.8
  • TI-2024-25415 Clipboard Virtual Channel Extension Remote Code Execution Vulnerability CVSS 3.1HIGH 8.8
See all 29 →

Sources

This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences