Skip to content
OpenAdvisories
Medium · 5.3 CVE-2025-55229 EUVD-2025-25495GHSA-vj5w-xw66-qjq5

Windows Certificate Spoofing Vulnerability

Published Aug 21, 2025 · Updated Feb 13, 2026 · Assigned by microsoft

Vendor: Microsoft Product: Windows 10 Version 1507 Product: Windows 10 Version 1607 Product: Windows 10 Version 1809 Product: Windows 10 Version 21H2 Product: Windows 10 Version 22H2 Product: Windows 11 version 22H2 Product: Windows 11 version 22H3 Product: Windows 11 version 23H2 Product: Windows 11 Version 24H2 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 2022, 23H2 Edition (Server Core installation) Product: Windows Server 2025 Product: Windows Server 2025 (Server Core installation) Platform: Windows

Description

Improper verification of cryptographic signature in Windows Certificates allows an unauthorized attacker to perform spoofing over a network.

Affected products

VendorProductAffectedFixed
Microsoft Windows 10 Version 1507 10.0.10240.0 – < 10.0.10240.21014 10.0.10240.21014
Microsoft Windows 10 Version 1607 10.0.14393.0 – < 10.0.14393.8066 10.0.14393.8066
Microsoft Windows 10 Version 1809 10.0.17763.0 – < 10.0.17763.7314 10.0.17763.7314
Microsoft Windows 10 Version 21H2 10.0.19044.0 – < 10.0.19044.5854 10.0.19044.5854
Microsoft Windows 10 Version 22H2 10.0.19045.0 – < 10.0.19045.5854 10.0.19045.5854
Microsoft Windows 11 version 22H2 10.0.22621.0 – < 10.0.22621.5335 10.0.22621.5335
Microsoft Windows 11 version 22H3 10.0.22631.0 – < 10.0.22631.5335 10.0.22631.5335
Microsoft Windows 11 Version 23H2 10.0.22631.0 – < 10.0.22631.5335 10.0.22631.5335
Microsoft Windows 11 Version 24H2 10.0.26100.0 – < 10.0.26100.4061 10.0.26100.4061
Microsoft Windows Server 2016 10.0.14393.0 – < 10.0.14393.8066 10.0.14393.8066
Microsoft Windows Server 2016 (Server Core installation) 10.0.14393.0 – < 10.0.14393.8066 10.0.14393.8066
Microsoft Windows Server 2019 10.0.17763.0 – < 10.0.17763.7314 10.0.17763.7314
Microsoft Windows Server 2019 (Server Core installation) 10.0.17763.0 – < 10.0.17763.7314 10.0.17763.7314
Microsoft Windows Server 2022 10.0.20348.0 – < 10.0.20348.3692 10.0.20348.3692
Microsoft Windows Server 2022, 23H2 Edition (Server Core installation) 10.0.25398.0 – < 10.0.25398.1611 10.0.25398.1611
Microsoft Windows Server 2025 10.0.26100.0 – < 10.0.26100.4061 10.0.26100.4061
Microsoft Windows Server 2025 (Server Core installation) 10.0.26100.0 – < 10.0.26100.4061 10.0.26100.4061

Advisories 2

References