# KB4011052: July 2017 security update

KB4011052, released July 27, 2017, fixes 3 CVEs across 2 products. None of them is reported as exploited. Patch Radar priority: High.

- Web page: https://patchblox.com/security/fix/microsoft/kb4011052
- Platform: Microsoft
- Released: Jul 27, 2017
- Priority: High (Closes CVE-2017-8663, high severity)
- CVEs: 3, exploited: 0, on CISA KEV: 0
- Vendor advisory: https://support.microsoft.com/help/4011052

## Applies to

| Product | Release | Fixed in |
|---|---|---|
| [Microsoft Outlook 2016 (32-bit edition)](https://patchblox.com/security/data/product/microsoft/microsoft-outlook-2016-32-bit-edition.md) |  |  |
| [Microsoft Outlook 2016 (64-bit edition)](https://patchblox.com/security/data/product/microsoft/microsoft-outlook-2016-64-bit-edition.md) |  |  |

## CVEs this fix closes

| CVE | Priority | Component | CVSS | EPSS | Exploitation |
|---|---|---|---:|---:|---|
| [CVE-2017-8663](https://patchblox.com/security/data/cve/CVE-2017-8663.md) | High | Microsoft Office | n/a | 0.2008 |  |
| [CVE-2017-8572](https://patchblox.com/security/data/cve/CVE-2017-8572.md) | High | Microsoft Office | n/a | 0.1259 |  |
| [CVE-2017-8571](https://patchblox.com/security/data/cve/CVE-2017-8571.md) | High | Microsoft Office | n/a | 0.0578 |  |

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Data as of 2026-11-07T18:46:35Z 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 Patchblox finds out-of-date software on Windows, macOS and Linux and updates it through release rings: https://patchblox.com/demo

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