# KB5002841: February 2026 security update

KB5002841, released February 10, 2026, fixes 2 CVEs in Microsoft SharePoint Enterprise Server 2016. 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/kb5002841
- Platform: Microsoft
- Released: Feb 10, 2026
- Priority: Urgent (Closes CVE-2026-21511, exploitation more likely)
- CVEs: 2, exploited: 0, on CISA KEV: 0
- Vendor advisory: https://support.microsoft.com/help/5002841

## Applies to

| Product | Release | Fixed in |
|---|---|---|
| [Microsoft SharePoint Enterprise Server 2016](https://patchblox.com/security/data/product/microsoft/microsoft-sharepoint-enterprise-server-2016.md) |  |  |

## CVEs this fix closes

| CVE | Priority | Component | CVSS | EPSS | Exploitation |
|---|---|---|---:|---:|---|
| [CVE-2026-21511](https://patchblox.com/security/data/cve/CVE-2026-21511.md) | Urgent | Microsoft Office Outlook | 7.5 | 0.0397 | More likely |
| [CVE-2026-21260](https://patchblox.com/security/data/cve/CVE-2026-21260.md) | High | Microsoft Office Outlook | 7.5 | 0.0150 |  |

---

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 Patchblox finds out-of-date software on Windows, macOS and Linux and updates it through release rings: https://patchblox.com/demo