Microsoft · Security update · August 12, 2025

KB5063889: August 2025 cumulative update for Windows 10 1507

KB5063889, released August 12, 2025, fixes 36 CVEs across 2 products. None of them is reported as exploited. Patch Radar priority: Urgent. The product is no longer supported.

UrgentUnsupported product
CVEs closed
36
3 rated Critical
Exploited
0
None reported
Exploitation more likely
6
Vendor assessment
Highest EPSS
0.5162
98th percentile

Priority of the 36 CVEs

Patch now 0 Urgent 7 High 26 Routine 3

Applies to

ProductBuild after install
Windows 10 for 32-bit Systems10240.21100
Windows 10 for x64-based Systems10240.21100

CVEs this fix closes

PriorityCVEComponentImpactCVSSEPSSExploitation
Urgent CVE-2025-53778 Windows NTLM Elevation of Privilege 8.8 0.5162 More likely
Urgent CVE-2025-53766 Windows GDI+ Remote Code Execution 9.8 0.0846 Exploitation Less Likely
Urgent CVE-2025-50177 Windows Message Queuing Remote Code Execution 8.1 0.0461 More likely
Urgent CVE-2025-49743 Microsoft Graphics Component Elevation of Privilege 6.7 0.0053 More likely
Urgent CVE-2025-53132 Windows Win32K - GRFX Elevation of Privilege 7.8 0.0046 More likely
Urgent CVE-2025-53147 Windows Ancillary Function Driver for WinSock Elevation of Privilege 7.0 0.0045 More likely
Urgent CVE-2025-50167 Role: Windows Hyper-V Elevation of Privilege 7.0 0.0038 More likely
High CVE-2025-53722 Windows Remote Desktop Services Denial of Service 7.5 0.2342 Exploitation Less Likely
High CVE-2025-53143 Windows Message Queuing Remote Code Execution 8.8 0.0903 Exploitation Less Likely
High CVE-2025-53144 Windows Message Queuing Remote Code Execution 8.8 0.0849 Exploitation Less Likely
High CVE-2025-53145 Windows Message Queuing Remote Code Execution 8.8 0.0849 Exploitation Less Likely
High CVE-2025-53149 Kernel Streaming WOW Thunk Service Driver Elevation of Privilege 7.8 0.0077 Exploitation Less Likely
High CVE-2025-50161 Windows Win32K - GRFX Elevation of Privilege 7.3 0.0060 Exploitation Less Likely
High CVE-2025-50159 Remote Access Point-to-Point Protocol (PPP) EAP-TLS Elevation of Privilege 7.3 0.0059 Exploitation Less Likely
High CVE-2025-50173 Windows Installer Elevation of Privilege 7.8 0.0055 Exploitation Less Likely
High CVE-2025-53155 Role: Windows Hyper-V Elevation of Privilege 7.8 0.0049 Exploitation Less Likely
High CVE-2025-53723 Role: Windows Hyper-V Elevation of Privilege 7.8 0.0049 Exploitation Less Likely
High CVE-2025-53152 Desktop Windows Manager Remote Code Execution 7.8 0.0045 Exploitation Less Likely
High CVE-2025-53724 Windows Push Notifications Elevation of Privilege 7.8 0.0045 Exploitation Unlikely
High CVE-2025-53726 Windows Push Notifications Elevation of Privilege 7.8 0.0045 Exploitation Unlikely
High CVE-2025-49761 Windows Kernel Elevation of Privilege 7.8 0.0044 Exploitation Unlikely
High CVE-2025-50153 Desktop Windows Manager Elevation of Privilege 7.8 0.0044 Exploitation Less Likely
High CVE-2025-50155 Windows Push Notifications Elevation of Privilege 7.8 0.0044 Exploitation Unlikely
High CVE-2025-53141 Windows Ancillary Function Driver for WinSock Elevation of Privilege 7.8 0.0044 Exploitation Less Likely
High CVE-2025-53154 Windows Ancillary Function Driver for WinSock Elevation of Privilege 7.8 0.0044 Exploitation Less Likely
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