CVE-2021-26417: Microsoft Windows 10

Medium severity, CVSS 5.5. EPSS: 0.8% chance of exploitation in the next 30 days.

Windows Overlay Filter Information Disclosure Vulnerability

Affected products

• Microsoft Windows 10: version 20h2 only; version 1809 only; version 1909 only; version 2004 only
• Microsoft Windows Server 2016: version 20h2 only; version 1909 only; version 2004 only
• Microsoft Windows Server 2019: affected versions not specified

Published 2021-04-13. Last modified 2026-06-17.