# KB5002666: January 2025 security update

KB5002666, released January 14, 2025, fixes 3 CVEs in Microsoft SharePoint Server 2019. None of them is reported as exploited. Patch Radar priority: High. The product is no longer supported.

- Web page: https://patchblox.com/security/fix/microsoft/kb5002666
- Platform: Microsoft
- Released: Jan 14, 2025
- Priority: High (Closes CVE-2025-21348, high severity)
- CVEs: 3, exploited: 0, on CISA KEV: 0
- Vendor advisory: https://support.microsoft.com/help/5002666

## Applies to

| Product | Release | Fixed in |
|---|---|---|
| [Microsoft SharePoint Server 2019](https://patchblox.com/security/data/product/microsoft/microsoft-sharepoint-server-2019.md) |  |  |

## CVEs this fix closes

| CVE | Priority | Component | CVSS | EPSS | Exploitation |
|---|---|---|---:|---:|---|
| [CVE-2025-21348](https://patchblox.com/security/data/cve/CVE-2025-21348.md) | High | Microsoft Office SharePoint | 7.2 | 0.0183 |  |
| [CVE-2025-21344](https://patchblox.com/security/data/cve/CVE-2025-21344.md) | High | Microsoft Office SharePoint | 7.8 | 0.0088 |  |
| [CVE-2025-21393](https://patchblox.com/security/data/cve/CVE-2025-21393.md) | Routine | Microsoft Office SharePoint | 6.3 | 0.0106 |  |

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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 Patchblox finds out-of-date software on Windows, macOS and Linux and updates it through release rings: https://patchblox.com/demo