Microsoft · Security update · August 12, 2025

KB5063888: August 2025 security update

KB5063888, released August 12, 2025, fixes 34 CVEs across 4 products. None of them is reported as exploited. Patch Radar priority: Urgent. The product is no longer supported.

UrgentUnsupported product
CVEs closed
34
3 rated Critical
Exploited
0
None reported
Exploitation more likely
5
Vendor assessment
Highest EPSS
0.5162
98th percentile

Priority of the 34 CVEs

Patch now 0 Urgent 6 High 19 Routine 9

Applies to

Product
Windows Server 2008 for 32-bit Systems Service Pack 2
Windows Server 2008 for 32-bit Systems Service Pack 2 (Server Core installation)
Windows Server 2008 for x64-based Systems Service Pack 2
Windows Server 2008 for x64-based Systems Service Pack 2 (Server Core installation)

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
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-2025-53720 Windows Routing and Remote Access Service (RRAS) Remote Code Execution 8.0 0.0098 Exploitation Unlikely
High CVE-2025-50163 Windows Routing and Remote Access Service (RRAS) Remote Code Execution 8.8 0.0097 Exploitation Unlikely
High CVE-2025-50160 Windows Routing and Remote Access Service (RRAS) Remote Code Execution 8.0 0.0093 Exploitation Less Likely
High CVE-2025-50162 Windows Routing and Remote Access Service (RRAS) Remote Code Execution 8.0 0.0093 Exploitation Unlikely
High CVE-2025-50164 Windows Routing and Remote Access Service (RRAS) Remote Code Execution 8.0 0.0093 Exploitation Unlikely
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-2025-50173 Windows Installer Elevation of Privilege 7.8 0.0055 Exploitation Less Likely
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
High CVE-2025-53137 Windows Ancillary Function Driver for WinSock Elevation of Privilege 7.0 0.0039 Exploitation Less Likely
High CVE-2025-50158 Windows NTFS Information Disclosure 7.0 0.0039 Exploitation Less Likely
High CVE-2025-53718 Windows Ancillary Function Driver for WinSock Elevation of Privilege 7.0 0.0036 Exploitation Less Likely
High CVE-2025-53140 Kernel Transaction Manager Elevation of Privilege 7.0 0.0036 Exploitation Less Likely
High CVE-2025-53134 Windows Ancillary Function Driver for WinSock Elevation of Privilege 7.0 0.0032 Exploitation Less Likely
High CVE-2025-49762 Windows Ancillary Function Driver for WinSock Elevation of Privilege 7.0 0.0027 Exploitation Less Likely
Showing 1 to 25 of 34 1Next