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Medium5.5Microsoft Server

Medium [CVE-2020-1076] Windows Denial of Service Vulnerability

This medium-severity Microsoft Server advisory covers CVE-2020-1076 affecting Windows Server 2012 (Server Core installation), Windows Server 2012 R2 (Server Core installation), Windows Server 2016 (Server Core installation).

CVE-2020-1076 Published May 21, 2020Updated by vendor Aug 19, 2026
CVE-2020-1076
Affected products & platforms
Microsoft ServerWindows Server
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Summary

A denial of service vulnerability exists when Windows improperly handles objects in memory. An attacker who successfully exploited the vulnerability could cause a target system to stop responding.

To exploit this vulnerability, an attacker would have to log on to an affected system and run a specially crafted application. The update addresses the vulnerability by correcting how Windows handles objects in memory.

Affected products named by the advisory: Windows Server 2012; Windows Server 2012 (Server Core installation); Windows Server 2012 R2; Windows Server 2012 R2 (Server Core installation); and 7 more.

Affected products named by the advisory: Windows Server 2016 (Server Core installation); Windows Server 2019 (Server Core installation); Windows Server, version 1803 (Server Core Installation); Windows Server, version 1903 (Server Core installation); and 1 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 8.1 6.3.0 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 Windows handles objects in memory.

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

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