CVE-2016-3300: Microsoft Windows 8.1

High severity, CVSS 7.8. EPSS: 1.3% chance of exploitation in the next 30 days.

The Netlogon service in Microsoft Windows 8.1, Windows Server 2012 Gold and R2, and Windows RT 8.1 improperly establishes secure communications channels, which allows local users to gain privileges by leveraging access to a domain-joined machine, aka "Netlogon Elevation of Privilege Vulnerability."

Affected products

• Microsoft Windows 8.1: affected versions not specified
• Microsoft Windows Rt 8.1: affected versions not specified
• Microsoft Windows Server 2012: affected versions not specified; version r2 only

Published 2016-08-09. Last modified 2026-06-17.