# KB4011217: October 2017 security update

KB4011217, released October 10, 2017, fixes 4 CVEs in Microsoft SharePoint Enterprise Server 2016. One of them is being exploited (CVE-2017-11826); 1 on CISA KEV. Patch Radar priority: Patch now. The product is no longer supported.

- Web page: https://patchblox.com/security/fix/microsoft/kb4011217
- Platform: Microsoft
- Released: Oct 10, 2017
- Priority: Patch now (Closes CVE-2017-11826, exploited (CISA KEV))
- CVEs: 4, exploited: 1, on CISA KEV: 1
- Vendor advisory: https://support.microsoft.com/help/4011217

## 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-2017-11826](https://patchblox.com/security/data/cve/CVE-2017-11826.md) | Patch now | Microsoft Office | n/a | 0.8133 | CISA KEV, Disclosed |
| [CVE-2017-11775](https://patchblox.com/security/data/cve/CVE-2017-11775.md) | High | Microsoft Office | n/a | 0.0227 |  |
| [CVE-2017-11777](https://patchblox.com/security/data/cve/CVE-2017-11777.md) | High | Microsoft Office | n/a | 0.0227 | Disclosed |
| [CVE-2017-11820](https://patchblox.com/security/data/cve/CVE-2017-11820.md) | High | Microsoft Office | n/a | 0.0227 |  |

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 Patchblox finds out-of-date software on Windows, macOS and Linux and updates it through release rings: https://patchblox.com/demo