# KB5063899: August 2025 cumulative update for Windows Server 23H2 KB5063899, released August 12, 2025, fixes 57 CVEs in Windows Server 2022, 23H2 Edition (Server Core installation) (build 25398.1791). 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/kb5063899 - Platform: Microsoft - Released: Aug 12, 2025 - Priority: Urgent (Closes CVE-2025-53778, exploitation more likely) - CVEs: 57, exploited: 0, on CISA KEV: 0 - Vendor advisory: https://support.microsoft.com/help/5063899 ## Applies to | Product | Release | Fixed in | |---|---|---| | [Windows Server 2022, 23H2 Edition (Server Core installation)](https://patchblox.com/security/data/product/microsoft/windows-server-2022-23h2-edition-server-core-installation.md) | | 25398.1791 | ## 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-2025-50168](https://patchblox.com/security/data/cve/CVE-2025-50168.md) | Urgent | Windows Win32K - ICOMP | 7.8 | 0.0077 | More likely | | [CVE-2025-53156](https://patchblox.com/security/data/cve/CVE-2025-53156.md) | Urgent | Storage Port Driver | 5.5 | 0.0071 | More likely | | [CVE-2025-50176](https://patchblox.com/security/data/cve/CVE-2025-50176.md) | Urgent | Graphics Kernel | 7.8 | 0.0054 | | | [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-2025-50167](https://patchblox.com/security/data/cve/CVE-2025-50167.md) | Urgent | Role: Windows Hyper-V | 7.0 | 0.0038 | More likely | | [CVE-2025-53722](https://patchblox.com/security/data/cve/CVE-2025-53722.md) | High | Windows Remote Desktop Services | 7.5 | 0.2342 | | | [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-2025-50171](https://patchblox.com/security/data/cve/CVE-2025-50171.md) | High | Remote Desktop Server | 9.1 | 0.0104 | | | [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-2025-53131](https://patchblox.com/security/data/cve/CVE-2025-53131.md) | High | Windows Media | 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-2025-50159](https://patchblox.com/security/data/cve/CVE-2025-50159.md) | High | Remote Access Point-to-Point Protocol (PPP) EAP-TLS | 7.3 | 0.0059 | | | [CVE-2025-50173](https://patchblox.com/security/data/cve/CVE-2025-50173.md) | High | Windows Installer | 7.8 | 0.0055 | | | [CVE-2025-53155](https://patchblox.com/security/data/cve/CVE-2025-53155.md) | High | Role: Windows Hyper-V | 7.8 | 0.0049 | | | [CVE-2025-53723](https://patchblox.com/security/data/cve/CVE-2025-53723.md) | High | Role: Windows Hyper-V | 7.8 | 0.0049 | | | [CVE-2025-53724](https://patchblox.com/security/data/cve/CVE-2025-53724.md) | High | Windows Push Notifications | 7.8 | 0.0045 | | | [CVE-2025-53726](https://patchblox.com/security/data/cve/CVE-2025-53726.md) | High | Windows Push Notifications | 7.8 | 0.0045 | | | [CVE-2025-49761](https://patchblox.com/security/data/cve/CVE-2025-49761.md) | High | Windows Kernel | 7.8 | 0.0044 | | | [CVE-2025-50155](https://patchblox.com/security/data/cve/CVE-2025-50155.md) | High | Windows Push Notifications | 7.8 | 0.0044 | | | [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-2025-53151](https://patchblox.com/security/data/cve/CVE-2025-53151.md) | High | Windows Kernel | 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-2025-53725](https://patchblox.com/security/data/cve/CVE-2025-53725.md) | High | Windows Push Notifications | 7.8 | 0.0044 | | | [CVE-2025-50170](https://patchblox.com/security/data/cve/CVE-2025-50170.md) | High | Windows Cloud Files Mini Filter Driver | 7.8 | 0.0040 | | | [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-2025-53142](https://patchblox.com/security/data/cve/CVE-2025-53142.md) | High | Microsoft Brokering File System | 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-2025-53721](https://patchblox.com/security/data/cve/CVE-2025-53721.md) | High | Windows Connected Devices Platform Service | 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-2025-53135](https://patchblox.com/security/data/cve/CVE-2025-53135.md) | High | Windows DirectX | 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-2025-50172](https://patchblox.com/security/data/cve/CVE-2025-50172.md) | Routine | Windows DirectX | 6.5 | 0.0155 | | | [CVE-2025-53716](https://patchblox.com/security/data/cve/CVE-2025-53716.md) | Routine | Windows Local Security Authority Subsystem Service (LSASS) | 6.5 | 0.0155 | | | [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 | | | [CVE-2025-49751](https://patchblox.com/security/data/cve/CVE-2025-49751.md) | Routine | Role: Windows Hyper-V | 6.8 | 0.0054 | | --- Data as of 2026-11-07T06:34:28Z UTC. Source: Patchblox Patch Radar (https://patchblox.com/security/patch-radar). Patchblox finds out-of-date software on Windows, macOS and Linux and updates it through release rings: https://patchblox.com/demo