Microsoft · ServicingStack update · December 9, 2025
KB5071547: December 2025 cumulative update for Windows Server 23H2
KB5071547, released December 9, 2025, fixes 29 CVEs across 2 products. One of them is being exploited (CVE-2025-62221); 1 on CISA KEV. Patch Radar priority: Patch now.
Patch now1 on CISA KEV1 publicly disclosed
CVEs closed
29
None rated Critical
Exploited
1
CVE-2025-62221
Exploitation more likely
6
Vendor assessment
Highest EPSS
0.0251
84th percentile
Priority of the 29 CVEs
Patch now 1
Urgent 6
High 17
Routine 5
Applies to
| Product | Build after install |
|---|---|
| Windows Server 2022 | 20348.4529 |
| Windows Server 2022 (Server Core installation) | 20348.4529 |
CVEs this fix closes
| Priority | CVE | Component | Impact | CVSS | EPSS | Exploitation |
|---|---|---|---|---|---|---|
| Patch now | CVE-2025-62221 | Windows Cloud Files Mini Filter Driver | Elevation of Privilege | 7.8 | 0.0251 | KEVExploited |
| Urgent | CVE-2025-59517 | Windows Storage VSP Driver | Elevation of Privilege | 7.8 | 0.0245 | More likely |
| Urgent | CVE-2025-59516 | Windows Storage VSP Driver | Elevation of Privilege | 7.8 | 0.0234 | More likely |
| Urgent | CVE-2025-62454 | Windows Cloud Files Mini Filter Driver | Elevation of Privilege | 7.8 | 0.0229 | More likely |
| Urgent | CVE-2025-62472 | Windows Remote Access Connection Manager | Elevation of Privilege | 7.8 | 0.0220 | More likely |
| Urgent | CVE-2025-62458 | Windows Win32K - GRFX | Elevation of Privilege | 7.8 | 0.0066 | More likely |
| Urgent | CVE-2025-62470 | Windows Common Log File System Driver | Elevation of Privilege | 7.8 | 0.0051 | More likely |
| High | CVE-2025-54100 | Windows PowerShell | Remote Code Execution | 7.8 | 0.0223 | DisclosedExploitation Less Likely |
| High | CVE-2025-62549 | Windows Routing and Remote Access Service (RRAS) | Remote Code Execution | 8.8 | 0.0132 | Exploitation Less Likely |
| High | CVE-2025-62456 | Windows Resilient File System (ReFS) | Remote Code Execution | 8.8 | 0.0111 | Exploitation Unlikely |
| High | CVE-2025-62565 | Windows Shell | Elevation of Privilege | 7.3 | 0.0057 | Exploitation Less Likely |
| High | CVE-2025-62457 | Windows Cloud Files Mini Filter Driver | Elevation of Privilege | 7.8 | 0.0040 | Exploitation Unlikely |
| High | CVE-2025-62466 | Windows Client-Side Caching (CSC) Service | Elevation of Privilege | 7.8 | 0.0040 | Exploitation Less Likely |
| High | CVE-2025-55233 | Windows Projected File System | Elevation of Privilege | 7.8 | 0.0040 | Exploitation Unlikely |
| High | CVE-2025-62461 | Windows Projected File System Filter Driver | Elevation of Privilege | 7.8 | 0.0040 | Exploitation Less Likely |
| High | CVE-2025-62462 | Windows Projected File System | Elevation of Privilege | 7.8 | 0.0040 | Exploitation Unlikely |
| High | CVE-2025-62464 | Windows Projected File System | Elevation of Privilege | 7.8 | 0.0040 | Exploitation Less Likely |
| High | CVE-2025-62467 | Windows Projected File System | Elevation of Privilege | 7.8 | 0.0040 | Exploitation Less Likely |
| High | CVE-2025-62571 | Windows Installer | Elevation of Privilege | 7.8 | 0.0040 | Exploitation Less Likely |
| High | CVE-2025-62474 | Windows Remote Access Connection Manager | Elevation of Privilege | 7.8 | 0.0037 | Exploitation Less Likely |
| High | CVE-2025-64673 | Storvsp.sys Driver | Elevation of Privilege | 7.8 | 0.0037 | Exploitation Less Likely |
| High | CVE-2025-64658 | Windows Shell | Elevation of Privilege | 7.5 | 0.0031 | Exploitation Less Likely |
| High | CVE-2025-64661 | Windows Shell | Elevation of Privilege | 7.8 | 0.0025 | Exploitation Less Likely |
| High | CVE-2025-62573 | Windows DirectX | Elevation of Privilege | 7.0 | 0.0025 | Exploitation Less Likely |
| Routine | CVE-2025-62473 | Windows Routing and Remote Access Service (RRAS) | Information Disclosure | 6.5 | 0.0108 | Exploitation Less Likely |
Showing 1 to 25 of 29
1Next