CVE-2018-8435: Microsoft Windows 10

Medium severity, CVSS 4.2. EPSS: 1.4% chance of exploitation in the next 30 days.

A security feature bypass vulnerability exists when Windows Hyper-V BIOS loader fails to provide a high-entropy source, aka "Windows Hyper-V Security Feature Bypass Vulnerability." This affects Windows Server 2016, Windows 10, Windows 10 Servers.

Affected products

• Microsoft Windows 10: affected versions not specified; version 1607 only; version 1703 only; version 1709 only; version 1803 only
• Microsoft Windows Server 2016: affected versions not specified; version 1709 only; version 1803 only

Published 2018-09-13. Last modified 2026-06-17.