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Medium6.8Microsoft Server

Medium [CVE-2020-1071] Windows Remote Access Common Dialog Elevation of Privilege Vulnerability

This medium-severity Microsoft Server advisory covers CVE-2020-1071 affecting Windows Server 2008 R2 Service Pack 1 (Server Core installation), Windows Server 2012 (Server Core installation), Windows Server 2012 R2 (Server Core installation).

CVE-2020-1071 Published May 21, 2020Updated by vendor Aug 19, 2026
Affected products & platforms
Microsoft ServerWindows Server
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Summary

An elevation of privilege vulnerability exists when Windows improperly handles errors tied to Remote Access Common Dialog. An attacker who successfully exploited the vulnerability could run arbitrary code with elevated privileges.

To exploit this vulnerability an attacker would need to physically access the booted machine to reach the logon screen. An attacker could then exploit the vulnerability and take control of an affected system.

The update addresses the vulnerability by correcting how the Windows handles errors tied to Remote Access Common Dialog.

Affected products named by the advisory: Windows Server 2008 R2 Service Pack 1; Windows Server 2008 R2 Service Pack 1 (Server Core installation); Windows Server 2012; Windows Server 2012 (Server Core installation); and 9 more.

Affected products named by the advisory: Windows Server 2012 R2 (Server Core installation); Windows Server 2016 (Server Core installation); Windows Server 2019 (Server Core installation); Windows Server, version 1803 (Server Core Installation); and 2 more.

Affected versions
  • Windows 10 Version 1507 10.0.10240.0 before publication
  • Windows 10 Version 1607 10.0.14393.0 before publication
  • Windows 10 Version 1709 10.0.0 before publication
  • Windows 10 Version 1709 for 32-bit Systems 10.0.0 before publication
  • Windows 10 Version 1803 10.0.0 before publication
  • Windows 10 Version 1809 10.0.17763.0 before publication
  • Windows 10 Version 1809 10.0.0 before publication
  • Windows 10 Version 1903 for 32-bit Systems 10.0.0 before publication
  • Windows 10 Version 1903 for ARM64-based Systems 10.0.0 before publication
  • Windows 10 Version 1903 for x64-based Systems 10.0.0 before publication
  • Windows 10 Version 1909 10.0.0 before publication
  • Windows 7 6.1.0 before publication

Official advisory · high-confidence parse· fetched 1 hour ago·verify at source

Fixed versions
  • publication

Official advisory · high-confidence parse· fetched 1 hour ago·verify at source

Mitigation checklist

Recommended fix / mitigation
  • The update addresses the vulnerability by correcting how the Windows handles errors tied to Remote Access Common Dialog.

Official advisory · high-confidence parse· fetched 1 hour ago·verify at source

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