# KB4475595: October 2019 security update

KB4475595, released October 8, 2019, fixes 1 CVE in Office Online Server. None of them is reported as exploited. Patch Radar priority: High.

- Web page: https://patchblox.com/security/fix/microsoft/kb4475595
- Platform: Microsoft
- Released: Oct 8, 2019
- Priority: High (Closes CVE-2019-1331, high severity)
- CVEs: 1, exploited: 0, on CISA KEV: 0
- Vendor advisory: https://support.microsoft.com/help/4475595

## Applies to

| Product | Release | Fixed in |
|---|---|---|
| [Office Online Server](https://patchblox.com/security/data/product/microsoft/office-online-server.md) |  |  |

## CVEs this fix closes

| CVE | Priority | Component | CVSS | EPSS | Exploitation |
|---|---|---|---:|---:|---|
| [CVE-2019-1331](https://patchblox.com/security/data/cve/CVE-2019-1331.md) | High | Microsoft Office | n/a | 0.1972 |  |

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 Patchblox finds out-of-date software on Windows, macOS and Linux and updates it through release rings: https://patchblox.com/demo