CVE-2023-21559: Microsoft Windows 10 1809

Medium severity, CVSS 5.5. EPSS: 0.6% chance of exploitation in the next 30 days.

Windows Cryptographic Information Disclosure Vulnerability

Affected products

• Microsoft Windows 10 1809: affected versions not specified
• Microsoft Windows 10 20h2: affected versions not specified
• Microsoft Windows 10 21h2: affected versions not specified
• Microsoft Windows 10 22h2: affected versions not specified
• Microsoft Windows 11 21h2: affected versions not specified
• Microsoft Windows 11 22h2: affected versions not specified
• Microsoft Windows Server 2019: affected versions not specified
• Microsoft Windows Server 2022: affected versions not specified

Published 2023-01-10. Last modified 2026-06-17.