# KB4517388: October 2019 security update

KB4517388, released October 9, 2019, fixes 1 CVE across 4 products. None of them is reported as exploited. Patch Radar priority: High. The product is no longer supported.

- Web page: https://patchblox.com/security/fix/microsoft/kb4517388
- Platform: Microsoft
- Released: Oct 9, 2019
- Priority: High (Closes CVE-2019-1316, high severity)
- CVEs: 1, exploited: 0, on CISA KEV: 0
- Vendor advisory: https://support.microsoft.com/help/4517388

## Applies to

| Product | Release | Fixed in |
|---|---|---|
| [Windows 10 Version 1903 for 32-bit Systems](https://patchblox.com/security/data/product/microsoft/windows-10-version-1903-for-32-bit-systems.md) |  |  |
| [Windows 10 Version 1903 for ARM64-based Systems](https://patchblox.com/security/data/product/microsoft/windows-10-version-1903-for-arm64-based-systems.md) |  |  |
| [Windows 10 Version 1903 for x64-based Systems](https://patchblox.com/security/data/product/microsoft/windows-10-version-1903-for-x64-based-systems.md) |  |  |
| [Windows Server, version 1903 (Server Core installation)](https://patchblox.com/security/data/product/microsoft/windows-server-version-1903-server-core-installation.md) |  |  |

## CVEs this fix closes

| CVE | Priority | Component | CVSS | EPSS | Exploitation |
|---|---|---|---:|---:|---|
| [CVE-2019-1316](https://patchblox.com/security/data/cve/CVE-2019-1316.md) | High | Microsoft Windows | 7.3 | 0.0107 |  |

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 Patchblox finds out-of-date software on Windows, macOS and Linux and updates it through release rings: https://patchblox.com/demo