# KB5063948: August 2025 security update KB5063948, 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. - Web page: https://patchblox.com/security/fix/microsoft/kb5063948 - Platform: Microsoft - Released: Aug 12, 2025 - Priority: Urgent (Closes CVE-2025-53778, exploitation more likely) - CVEs: 34, exploited: 0, on CISA KEV: 0 - Vendor advisory: https://support.microsoft.com/help/5063948 ## Applies to | Product | Release | Fixed in | |---|---|---| | [Windows Server 2008 for 32-bit Systems Service Pack 2](https://patchblox.com/security/data/product/microsoft/windows-server-2008-for-32-bit-systems-service-pack-2.md) | | | | [Windows Server 2008 for 32-bit Systems Service Pack 2 (Server Core installation)](https://patchblox.com/security/data/product/microsoft/windows-server-2008-for-32-bit-systems-service-pack-2-server-core-installation.md) | | | | [Windows Server 2008 for x64-based Systems Service Pack 2](https://patchblox.com/security/data/product/microsoft/windows-server-2008-for-x64-based-systems-service-pack-2.md) | | | | [Windows Server 2008 for x64-based Systems Service Pack 2 (Server Core installation)](https://patchblox.com/security/data/product/microsoft/windows-server-2008-for-x64-based-systems-service-pack-2-server-core-installation.md) | | | ## CVEs this fix closes | CVE | Priority | Component | CVSS | EPSS | Exploitation | |---|---|---|---:|---:|---| | [CVE-2025-53778](https://patchblox.com/security/data/cve/CVE-2025-53778.md) | Urgent | Windows NTLM | 8.8 | 0.5162 | More likely | | [CVE-2025-53766](https://patchblox.com/security/data/cve/CVE-2025-53766.md) | Urgent | Windows GDI+ | 9.8 | 0.0846 | | | [CVE-2025-50177](https://patchblox.com/security/data/cve/CVE-2025-50177.md) | Urgent | Windows Message Queuing | 8.1 | 0.0461 | More likely | | [CVE-2025-49743](https://patchblox.com/security/data/cve/CVE-2025-49743.md) | Urgent | Microsoft Graphics Component | 6.7 | 0.0053 | More likely | | [CVE-2025-53132](https://patchblox.com/security/data/cve/CVE-2025-53132.md) | Urgent | Windows Win32K - GRFX | 7.8 | 0.0046 | More likely | | [CVE-2025-53147](https://patchblox.com/security/data/cve/CVE-2025-53147.md) | Urgent | Windows Ancillary Function Driver for WinSock | 7.0 | 0.0045 | More likely | | [CVE-2025-53143](https://patchblox.com/security/data/cve/CVE-2025-53143.md) | High | Windows Message Queuing | 8.8 | 0.0903 | | | [CVE-2025-53144](https://patchblox.com/security/data/cve/CVE-2025-53144.md) | High | Windows Message Queuing | 8.8 | 0.0849 | | | [CVE-2025-53145](https://patchblox.com/security/data/cve/CVE-2025-53145.md) | High | Windows Message Queuing | 8.8 | 0.0849 | | | [CVE-2025-53720](https://patchblox.com/security/data/cve/CVE-2025-53720.md) | High | Windows Routing and Remote Access Service (RRAS) | 8.0 | 0.0098 | | | [CVE-2025-50163](https://patchblox.com/security/data/cve/CVE-2025-50163.md) | High | Windows Routing and Remote Access Service (RRAS) | 8.8 | 0.0097 | | | [CVE-2025-50160](https://patchblox.com/security/data/cve/CVE-2025-50160.md) | High | Windows Routing and Remote Access Service (RRAS) | 8.0 | 0.0093 | | | [CVE-2025-50162](https://patchblox.com/security/data/cve/CVE-2025-50162.md) | High | Windows Routing and Remote Access Service (RRAS) | 8.0 | 0.0093 | | | [CVE-2025-50164](https://patchblox.com/security/data/cve/CVE-2025-50164.md) | High | Windows Routing and Remote Access Service (RRAS) | 8.0 | 0.0093 | | | [CVE-2025-53149](https://patchblox.com/security/data/cve/CVE-2025-53149.md) | High | Kernel Streaming WOW Thunk Service Driver | 7.8 | 0.0077 | | | [CVE-2025-50161](https://patchblox.com/security/data/cve/CVE-2025-50161.md) | High | Windows Win32K - GRFX | 7.3 | 0.0060 | | | [CVE-2025-50173](https://patchblox.com/security/data/cve/CVE-2025-50173.md) | High | Windows Installer | 7.8 | 0.0055 | | | [CVE-2025-53141](https://patchblox.com/security/data/cve/CVE-2025-53141.md) | High | Windows Ancillary Function Driver for WinSock | 7.8 | 0.0044 | | | [CVE-2025-53154](https://patchblox.com/security/data/cve/CVE-2025-53154.md) | High | Windows Ancillary Function Driver for WinSock | 7.8 | 0.0044 | | | [CVE-2025-53137](https://patchblox.com/security/data/cve/CVE-2025-53137.md) | High | Windows Ancillary Function Driver for WinSock | 7.0 | 0.0039 | | | [CVE-2025-50158](https://patchblox.com/security/data/cve/CVE-2025-50158.md) | High | Windows NTFS | 7.0 | 0.0039 | | | [CVE-2025-53718](https://patchblox.com/security/data/cve/CVE-2025-53718.md) | High | Windows Ancillary Function Driver for WinSock | 7.0 | 0.0036 | | | [CVE-2025-53140](https://patchblox.com/security/data/cve/CVE-2025-53140.md) | High | Kernel Transaction Manager | 7.0 | 0.0036 | | | [CVE-2025-53134](https://patchblox.com/security/data/cve/CVE-2025-53134.md) | High | Windows Ancillary Function Driver for WinSock | 7.0 | 0.0032 | | | [CVE-2025-49762](https://patchblox.com/security/data/cve/CVE-2025-49762.md) | High | Windows Ancillary Function Driver for WinSock | 7.0 | 0.0027 | | | [CVE-2025-50154](https://patchblox.com/security/data/cve/CVE-2025-50154.md) | Routine | Windows File Explorer | 6.5 | 0.3177 | | | [CVE-2025-50166](https://patchblox.com/security/data/cve/CVE-2025-50166.md) | Routine | Windows Distributed Transaction Coordinator | 6.5 | 0.0141 | | | [CVE-2025-53719](https://patchblox.com/security/data/cve/CVE-2025-53719.md) | Routine | Windows Routing and Remote Access Service (RRAS) | 5.7 | 0.0133 | | | [CVE-2025-50156](https://patchblox.com/security/data/cve/CVE-2025-50156.md) | Routine | Windows Routing and Remote Access Service (RRAS) | 5.7 | 0.0125 | | | [CVE-2025-50157](https://patchblox.com/security/data/cve/CVE-2025-50157.md) | Routine | Windows Routing and Remote Access Service (RRAS) | 5.7 | 0.0123 | | | [CVE-2025-53138](https://patchblox.com/security/data/cve/CVE-2025-53138.md) | Routine | Windows Routing and Remote Access Service (RRAS) | 5.7 | 0.0123 | | | [CVE-2025-53148](https://patchblox.com/security/data/cve/CVE-2025-53148.md) | Routine | Windows Routing and Remote Access Service (RRAS) | 5.7 | 0.0123 | | | [CVE-2025-53153](https://patchblox.com/security/data/cve/CVE-2025-53153.md) | Routine | Windows Routing and Remote Access Service (RRAS) | 5.7 | 0.0123 | | | [CVE-2025-53136](https://patchblox.com/security/data/cve/CVE-2025-53136.md) | Routine | Windows NT OS Kernel | 5.5 | 0.0098 | | --- Data as of 2026-11-07T18:46:35Z UTC. 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