CVE-2021-31201: Microsoft Enhanced Cryptographic Provider Privilege Escalation Vulnerability

Medium severity, CVSS 5.2. Actively exploited: in CISA KEV since 2021-11-03. EPSS: 2.6% chance of exploitation in the next 30 days.

Microsoft Enhanced Cryptographic Provider Elevation of Privilege Vulnerability

Affected products

• Microsoft Windows 10 1507: before 10.0.10240.18967 (fixed in 10.0.10240.18967)
• Microsoft Windows 10 1607: before 10.0.14393.4467 (fixed in 10.0.14393.4467)
• Microsoft Windows 10 1809: before 10.0.17763.1999 (fixed in 10.0.17763.1999)
• Microsoft Windows 10 1909: before 10.0.18363.1621 (fixed in 10.0.18363.1621)
• Microsoft Windows 10 2004: before 10.0.19041.1052 (fixed in 10.0.19041.1052)
• Microsoft Windows 10 20h2: before 10.0.19042.1052 (fixed in 10.0.19042.1052)
• Microsoft Windows 10 21h1: before 10.0.19043.1052 (fixed in 10.0.19043.1052)
• Microsoft Windows 7: affected versions not specified
• Microsoft Windows 8.1: affected versions not specified
• Microsoft Windows Rt 8.1: affected versions not specified
• Microsoft Windows Server 2004: before 10.0.19041.1052 (fixed in 10.0.19041.1052)
• Microsoft Windows Server 2008: affected versions not specified; version r2 only
• Microsoft Windows Server 2012: affected versions not specified; version r2 only
• Microsoft Windows Server 2016: before 10.0.14393.4467 (fixed in 10.0.14393.4467)
• Microsoft Windows Server 2019: before 10.0.17763.1999 (fixed in 10.0.17763.1999)
• Microsoft Windows Server 20h2: before 10.0.19042.1052 (fixed in 10.0.19042.1052)

Published 2021-06-08. Last modified 2026-06-17.