CVE-2019-1230: Microsoft Windows 10

Medium severity, CVSS 6.8. EPSS: 5.8% chance of exploitation in the next 30 days.

An information disclosure vulnerability exists when the Windows Hyper-V Network Switch on a host operating system fails to properly validate input from an authenticated user on a guest operating system, aka 'Hyper-V Information Disclosure Vulnerability'.

Affected products

• Microsoft Windows 10: version 1703 only; version 1709 only; version 1803 only; version 1809 only
• Microsoft Windows Server 2016: version 1803 only
• Microsoft Windows Server 2019: affected versions not specified

Published 2019-10-10. Last modified 2026-06-17.