CVE-2018-8253: Microsoft Windows 10

Medium severity, CVSS 4.6. EPSS: 1.8% chance of exploitation in the next 30 days.

An elevation of privilege vulnerability exists when Microsoft Cortana allows arbitrary website browsing on the lockscreen, aka "Microsoft Cortana Elevation of Privilege Vulnerability." This affects Windows Server 2016, Windows 10.

Affected products

• Microsoft Windows 10: version 1607 only
• Microsoft Windows Server 2016: affected versions not specified

Published 2018-08-15. Last modified 2026-06-17.