Microsoft · Security update · August 12, 2025
KB5063878: August 2025 cumulative update for Windows Server 2025
KB5063878, released August 12, 2025, fixes 61 CVEs across 4 products. None of them is reported as exploited. Patch Radar priority: Urgent.
Urgent1 publicly disclosed
CVEs closed
61
5 rated Critical
Exploited
0
None reported
Exploitation more likely
8
Microsoft's assessment
Highest EPSS
0.5162
98th percentile
Priority of the 61 CVEs
Patch now 0
Urgent 11
High 38
Routine 12
Applies to
| Product | Build after install |
|---|---|
| Windows 11 Version 24H2 for ARM64-based Systems | 26100.4946 |
| Windows 11 Version 24H2 for x64-based Systems | 26100.4946 |
| Windows Server 2025 | 26100.4946 |
| Windows Server 2025 (Server Core installation) | 26100.4946 |
CVEs this fix closes
| Priority | CVE | Component | Impact | CVSS | EPSS | Exploitation |
|---|---|---|---|---|---|---|
| Urgent | CVE-2025-53778 | Windows NTLM | Elevation of Privilege | 8.8 | 0.5162 | More likely |
| Urgent | CVE-2025-50165 | Microsoft Graphics Component | Remote Code Execution | 9.8 | 0.1080 | Exploitation Less 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-2025-50168 | Windows Win32K - ICOMP | Elevation of Privilege | 7.8 | 0.0077 | More likely |
| Urgent | CVE-2025-53156 | Storage Port Driver | Information Disclosure | 5.5 | 0.0071 | More likely |
| Urgent | CVE-2025-50176 | Graphics Kernel | Remote Code Execution | 7.8 | 0.0054 | Exploitation Less 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-2025-53779 | Windows Kerberos | Elevation of Privilege | 7.2 | 0.0271 | DisclosedExploitation Less Likely |
| High | CVE-2025-50171 | Remote Desktop Server | Spoofing | 9.1 | 0.0104 | 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-2025-53131 | Windows Media | Remote Code Execution | 8.8 | 0.0097 | Exploitation Less Likely |
| 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-2025-50169 | Windows SMB | Remote Code Execution | 7.5 | 0.0069 | Exploitation Unlikely |
Showing 1 to 25 of 61
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