CVE-2021-34535: Remote Desktop Client Remote Code Execution Vulnerability

Published Aug 10, 2021
·
Updated

Remote Desktop Client Remote Code Execution Vulnerability

Affected Software

47 affected componentsFixes available
Microsoft Remote Desktop Windows
Microsoft Windows 10
Microsoft Windows 10=20h2
Microsoft Windows 10=21h1
Microsoft Windows 10=1607
Microsoft Windows 10=1809
Microsoft Windows 10=1909
Microsoft Windows 10=2004
Microsoft Windows 7=sp1
Microsoft Windows 8.1
Microsoft Windows RT 8.1
Microsoft Windows Server 2008=r2-sp1
Microsoft Windows Server 2012
Microsoft Windows Server 2012=r2
Microsoft Windows Server 2016
Microsoft Windows Server 2019
Microsoft Remote Desktop Client Windows
Microsoft Windows 8.1 for x64-based systems<6.3.9600.20094
6.3.9600.20094
Microsoft Windows RT 8.1<6.3.9600.20094
6.3.9600.20094
Microsoft Windows 10=1607
10.0.14393.4583
Microsoft Windows Server 2012<6.2.9200.23435
6.2.9200.23435
Microsoft Windows Server 2012 R2<6.3.9600.20094
6.3.9600.20094
Microsoft Windows Server 2008 R2<6.1.7601.25685
6.1.7601.25685
Microsoft Windows Server 2016<10.0.14393.4583
10.0.14393.4583
Microsoft Windows 8.1 for 32-bit systems<6.3.9600.20094
6.3.9600.20094
Microsoft Windows 7<6.1.7601.25685
6.1.7601.25685
Microsoft Windows 10<10.0.10240.19022
10.0.10240.19022
Microsoft Windows 10=2004
10.0.19041.1165
Microsoft Windows 10=2004
10.0.19041.1165
Microsoft Windows 10=2004
10.0.19041.1165
Microsoft Windows 10=20H2
10.0.19042.1165
Microsoft Windows 7<6.1.7601.25685
6.1.7601.25685
Microsoft Windows 10=21H1
10.0.19043.1165
Microsoft Windows 10=20H2
10.0.19042.1165
Microsoft Windows 10=1607
10.0.14393.4583
Microsoft Windows 10<10.0.10240.19022
10.0.10240.19022
Microsoft Windows 10=1909
10.0.18363.1734
Microsoft Windows 10=1909
10.0.18363.1734
Microsoft Remote Desktop client for Windows Desktop
Microsoft Windows 10=21H1
10.0.19043.1165
Microsoft Windows 10=1909
10.0.18363.1734
Microsoft Windows 10=21H1
10.0.19043.1165
Microsoft Windows 10=20H2
10.0.19042.1165
Microsoft Windows 10=1809
10.0.17763.2114
Microsoft Windows 10=1809
10.0.17763.2114
Microsoft Windows Server 2019<10.0.17763.2114
10.0.17763.2114
Microsoft Windows 10=1809
10.0.17763.2114

Remediation

Recommended actions to resolve this vulnerability, in priority order.

  1. Upgrade

    Upgrade to a fixed release to a version that resolves this vulnerability.

    Fixed in 6.3.9600.20094Patch KB5005106
  2. Upgrade

    Upgrade to a fixed release to a version that resolves this vulnerability.

    Fixed in 6.3.9600.20094Patch KB5005076
  3. Upgrade

    Upgrade to a fixed release to a version that resolves this vulnerability.

    Fixed in 10.0.14393.4583Patch KB5005043
  4. Upgrade

    Upgrade to a fixed release to a version that resolves this vulnerability.

    Fixed in 6.2.9200.23435Patch KB5005094
  5. Upgrade

    Upgrade to a fixed release to a version that resolves this vulnerability.

    Fixed in 6.1.7601.25685Patch KB5005089
  6. Upgrade

    Upgrade to a fixed release to a version that resolves this vulnerability.

    Fixed in 10.0.10240.19022Patch KB5005040
  7. Upgrade

    Upgrade to a fixed release to a version that resolves this vulnerability.

    Fixed in 10.0.19041.1165Patch KB5005033
  8. Upgrade

    Upgrade to a fixed release to a version that resolves this vulnerability.

    Fixed in 10.0.19042.1165Patch KB5005033
  9. Upgrade

    Upgrade to a fixed release to a version that resolves this vulnerability.

    Fixed in 10.0.19043.1165Patch KB5005033
  10. Upgrade

    Upgrade to a fixed release to a version that resolves this vulnerability.

    Fixed in 10.0.18363.1734Patch KB5005031
  11. Upgrade

    Upgrade to a fixed release to a version that resolves this vulnerability.

    Fixed in 10.0.17763.2114Patch KB5005030

Event History

Aug 10, 2021
CVE Published
via Microsoft·07:00 AM
Data Sourced
via Microsoft·07:00 AM
DescriptionSeverityWeaknessAffected Software
Updated
via Microsoft·02:00 PM
DescriptionSeverity
Updated
via Microsoft·02:00 PM
SeverityAffected Software
Aug 12, 2021
CVE Published
via MITRE·06:12 PM
Data Sourced
via MITRE·06:12 PM
DescriptionSeverity
Data Sourced
via NVD·06:15 PM
RemedyDescriptionSeverityAffected Software

Frequently Asked Questions

1

What is CVE-2021-34535?

CVE-2021-34535 is a Remote Desktop Client Remote Code Execution Vulnerability.

2

Which software is affected by CVE-2021-34535?

The Microsoft Remote Desktop client for Windows Desktop, Microsoft Windows 10 (all versions), Microsoft Windows 7 (SP1), Microsoft Windows 8.1, Microsoft Windows RT 8.1, Microsoft Windows Server 2008 (R2 SP1), Microsoft Windows Server 2012, Microsoft Windows Server 2012 R2, Microsoft Windows Server 2016, and Microsoft Windows Server 2019 are affected.

3

What is the severity level of CVE-2021-34535?

CVE-2021-34535 has a severity level of high.

4

How can I fix CVE-2021-34535?

Apply the security updates provided by Microsoft to fix CVE-2021-34535.

5

Where can I find more information about CVE-2021-34535?

You can find more information about CVE-2021-34535 on the Microsoft Security Guidance Advisory page.

Contact

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