An elevation of privilege vulnerability exists when Windows improperly handles authentication requests, aka 'Microsoft Windows Elevation of

Summary

Microsoft Windows is affected by this vulnerability, which allows a local attacker to gain elevated privileges on the system. The flaw stems from Windows improperly handling authentication requests.

Summarized by anthropic/claude-haiku-5.5. Verify details against the original sources.

Timeline

1. Oct 10, 2019, 1:28 PM UTCCVE published
2. Mar 15, 2022Added to CISA KEV

   CISA has evidence of exploitation in the wild

3. Apr 5, 2022CISA remediation deadline

   Due date for US federal agencies to patch

4. Oct 21, 2025, 11:45 PM UTCRecord last updated
5. Oct 22, 2026EPSS reached 10%

   FIRST estimates at least a 10% chance of exploitation in the next 30 days

Affected versions

• Microsoft Windows

  10 Version 1803 for 32-bit Systems, 10 Version 1803 for x64-based Systems, 10 Version 1803 for ARM64-based Systems, 10 Version 1809 for 32-bit Systems, 10 Version 1809 for x64-based Systems, 10 Version 1809 for ARM64-based Systems

• Microsoft Windows Server

  version 1803 (Core Installation), 2019, 2019 (Core installation)

• Microsoft Windows 10 Version 1903 for 32-bit Systems

  Version range not reported

• Microsoft Windows 10 Version 1903 for x64-based Systems

  Version range not reported

• Microsoft Windows 10 Version 1903 for ARM64-based Systems

  Version range not reported

• Microsoft Windows Server, version 1903 (Server Core installation)

  Version range not reported

References 2