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Medium5.5Microsoft Server

Medium [CVE-2020-1145] Windows GDI Information Disclosure Vulnerability

This medium-severity Microsoft Server advisory covers CVE-2020-1145 affecting Windows Server, version 1903 (Server Core installation), Windows Server, version 1909 (Server Core installation).

CVE-2020-1145 Published May 21, 2020Updated by vendor Aug 19, 2026
Affected products & platforms
Microsoft ServerWindows Server
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Summary

An information disclosure vulnerability exists in the way that the Windows Graphics Device Interface (GDI) handles objects in memory, allowing an attacker to retrieve information from a targeted system.

By itself, the information disclosure does not allow arbitrary code execution; however, it could allow arbitrary code to be run if the attacker uses it in combination with another vulnerability. To exploit this vulnerability, an attacker would have to log on to an affected system and run a specially crafted application.

The security update addresses the vulnerability by correcting how GDI handles memory addresses.

Affected products named by the advisory: Windows Server, version 1903 (Server Core installation); Windows Server, version 1909 (Server Core installation).

Affected versions
  • 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 Server, version 1903 (Server Core installation) 10.0.0 before publication
  • Windows Server, version 1909 (Server Core installation) 10.0.0 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 security update addresses the vulnerability by correcting how GDI handles memory addresses.

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

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