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OpenAdvisories
High · 7.8 CVE-2026-62777 EUVD-2026-56382GHSA-3hr6-jp44-x65h

Windows License Manager Elevation of Privilege Vulnerability

Published Aug 11, 2026 · Updated Nov 10, 2026 · Assigned by microsoft

Vendor: Microsoft Product: Windows 10 Version 1607 Product: Windows 10 Version 1809 Product: Windows 10 Version 21H2 Product: Windows 10 Version 22H2 Product: Windows 11 version 23H2 Product: Windows 11 Version 24H2 Product: Windows 11 Version 25H2 Product: Windows 11 version 26H1 Product: Windows Server 2016 Product: Windows Server 2016 (Server Core installation) Product: Windows Server 2019 Product: Windows Server 2019 (Server Core installation) Product: Windows Server 2022 Product: Windows Server 2025 Product: Windows Server 2025 (Server Core installation) Platform: Windows

Description

Missing authentication for critical function in Windows License Manager allows an authorized attacker to elevate privileges locally.

Affected products

VendorProductAffectedFixed
Microsoft Windows 10 Version 1607 10.0.14393.0 – < 10.0.14393.9418 10.0.14393.9418
Microsoft Windows 10 Version 1809 10.0.17763.0 – < 10.0.17763.9121 10.0.17763.9121
Microsoft Windows 10 Version 21H2 10.0.19044.0 – < 10.0.19044.7663 10.0.19044.7663
Microsoft Windows 10 Version 22H2 10.0.19045.0 – < 10.0.19045.7663 10.0.19045.7663
Microsoft Windows 11 version 23H2 10.0.22631.0 – < 10.0.22631.7517 10.0.22631.7517
Microsoft Windows 11 Version 24H2 10.0.26100.0 – < 10.0.26100.9168 10.0.26100.9168
Microsoft Windows 11 Version 25H2 10.0.26200.0 – < 10.0.26200.9168 10.0.26200.9168
Microsoft Windows 11 version 26H1 10.0.28000.0 – < 10.0.28000.2704 10.0.28000.2704
Microsoft Windows Server 2016 10.0.14393.0 – < 10.0.14393.9418 10.0.14393.9418
Microsoft Windows Server 2016 (Server Core installation) 10.0.14393.0 – < 10.0.14393.9418 10.0.14393.9418
Microsoft Windows Server 2019 10.0.17763.0 – < 10.0.17763.9121 10.0.17763.9121
Microsoft Windows Server 2019 (Server Core installation) 10.0.17763.0 – < 10.0.17763.9121 10.0.17763.9121
Microsoft Windows Server 2022 10.0.20348.0 – < 10.0.20348.5499 10.0.20348.5499
Microsoft Windows Server 2025 10.0.26100.0 – < 10.0.26100.33296 10.0.26100.33296
Microsoft Windows Server 2025 (Server Core installation) 10.0.26100.0 – < 10.0.26100.33296 10.0.26100.33296

Advisories 3

References