# KB4493223: February 2021 security update

KB4493223, released February 9, 2021, fixes 3 CVEs in Microsoft SharePoint Foundation 2010 Service Pack 2. 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/kb4493223
- Platform: Microsoft
- Released: Feb 9, 2021
- Priority: Urgent (Closes CVE-2021-24066, exploitation more likely)
- CVEs: 3, exploited: 0, on CISA KEV: 0
- Vendor advisory: https://support.microsoft.com/help/4493223

## Applies to

| Product | Release | Fixed in |
|---|---|---|
| [Microsoft SharePoint Foundation 2010 Service Pack 2](https://patchblox.com/security/data/product/microsoft/microsoft-sharepoint-foundation-2010-service-pack-2.md) |  |  |

## CVEs this fix closes

| CVE | Priority | Component | CVSS | EPSS | Exploitation |
|---|---|---|---:|---:|---|
| [CVE-2021-24066](https://patchblox.com/security/data/cve/CVE-2021-24066.md) | Urgent | Microsoft Office SharePoint | 8.8 | 0.0630 | More likely |
| [CVE-2021-1726](https://patchblox.com/security/data/cve/CVE-2021-1726.md) | High | Microsoft Office SharePoint | 8.0 | 0.0211 |  |
| [CVE-2021-24071](https://patchblox.com/security/data/cve/CVE-2021-24071.md) | Routine | Microsoft Office SharePoint | 5.3 | 0.0270 |  |

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 Patchblox finds out-of-date software on Windows, macOS and Linux and updates it through release rings: https://patchblox.com/demo