# KB5071543: December 2025 cumulative update for Windows 10 1607

KB5071543, released December 9, 2025, fixes 15 CVEs across 4 products. None of them is reported as exploited. Patch Radar priority: Urgent.

- Web page: https://patchblox.com/security/fix/microsoft/kb5071543
- Platform: Microsoft
- Released: Dec 9, 2025
- Priority: Urgent (Closes CVE-2025-59517, exploitation more likely)
- CVEs: 15, exploited: 0, on CISA KEV: 0
- Vendor advisory: https://support.microsoft.com/help/5071543

## Applies to

| Product | Release | Fixed in |
|---|---|---|
| [Windows 10 Version 1607 for 32-bit Systems](https://patchblox.com/security/data/product/microsoft/windows-10-version-1607-for-32-bit-systems.md) |  | 14393.8688 |
| [Windows 10 Version 1607 for x64-based Systems](https://patchblox.com/security/data/product/microsoft/windows-10-version-1607-for-x64-based-systems.md) |  | 14393.8688 |
| [Windows Server 2016](https://patchblox.com/security/data/product/microsoft/windows-server-2016.md) |  | 14393.8688 |
| [Windows Server 2016 (Server Core installation)](https://patchblox.com/security/data/product/microsoft/windows-server-2016-server-core-installation.md) |  | 14393.8688 |

## CVEs this fix closes

| CVE | Priority | Component | CVSS | EPSS | Exploitation |
|---|---|---|---:|---:|---|
| [CVE-2025-59517](https://patchblox.com/security/data/cve/CVE-2025-59517.md) | Urgent | Windows Storage VSP Driver | 7.8 | 0.0245 | More likely |
| [CVE-2025-62472](https://patchblox.com/security/data/cve/CVE-2025-62472.md) | Urgent | Windows Remote Access Connection Manager | 7.8 | 0.0220 | More likely |
| [CVE-2025-62458](https://patchblox.com/security/data/cve/CVE-2025-62458.md) | Urgent | Windows Win32K - GRFX | 7.8 | 0.0066 | More likely |
| [CVE-2025-62470](https://patchblox.com/security/data/cve/CVE-2025-62470.md) | Urgent | Windows Common Log File System Driver | 7.8 | 0.0051 | More likely |
| [CVE-2025-54100](https://patchblox.com/security/data/cve/CVE-2025-54100.md) | High | Windows PowerShell | 7.8 | 0.0223 | Disclosed |
| [CVE-2025-62549](https://patchblox.com/security/data/cve/CVE-2025-62549.md) | High | Windows Routing and Remote Access Service (RRAS) | 8.8 | 0.0132 |  |
| [CVE-2025-62565](https://patchblox.com/security/data/cve/CVE-2025-62565.md) | High | Windows Shell | 7.3 | 0.0057 |  |
| [CVE-2025-62455](https://patchblox.com/security/data/cve/CVE-2025-62455.md) | High | Windows Message Queuing | 7.8 | 0.0047 |  |
| [CVE-2025-62466](https://patchblox.com/security/data/cve/CVE-2025-62466.md) | High | Windows Client-Side Caching (CSC) Service | 7.8 | 0.0040 |  |
| [CVE-2025-62571](https://patchblox.com/security/data/cve/CVE-2025-62571.md) | High | Windows Installer | 7.8 | 0.0040 |  |
| [CVE-2025-62474](https://patchblox.com/security/data/cve/CVE-2025-62474.md) | High | Windows Remote Access Connection Manager | 7.8 | 0.0037 |  |
| [CVE-2025-64661](https://patchblox.com/security/data/cve/CVE-2025-64661.md) | High | Windows Shell | 7.8 | 0.0025 |  |
| [CVE-2025-62573](https://patchblox.com/security/data/cve/CVE-2025-62573.md) | High | Windows DirectX | 7.0 | 0.0025 |  |
| [CVE-2025-62473](https://patchblox.com/security/data/cve/CVE-2025-62473.md) | Routine | Windows Routing and Remote Access Service (RRAS) | 6.5 | 0.0108 |  |
| [CVE-2025-62567](https://patchblox.com/security/data/cve/CVE-2025-62567.md) | Routine | Windows Hyper-V | 5.3 | 0.0103 |  |

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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