# KB4566785: July 2020 security update

KB4566785, released July 14, 2020, 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/kb4566785
- Platform: Microsoft
- Released: Jul 14, 2020
- Priority: High (Closes CVE-2020-1346, high severity)
- CVEs: 1, exploited: 0, on CISA KEV: 0
- Vendor advisory: https://support.microsoft.com/help/4566785

## Applies to

| Product | Release | Fixed in |
|---|---|---|
| [Windows 10 Version 2004 for 32-bit Systems](https://patchblox.com/security/data/product/microsoft/windows-10-version-2004-for-32-bit-systems.md) |  |  |
| [Windows 10 Version 2004 for ARM64-based Systems](https://patchblox.com/security/data/product/microsoft/windows-10-version-2004-for-arm64-based-systems.md) |  |  |
| [Windows 10 Version 2004 for x64-based Systems](https://patchblox.com/security/data/product/microsoft/windows-10-version-2004-for-x64-based-systems.md) |  |  |
| [Windows Server, version 2004 (Server Core installation)](https://patchblox.com/security/data/product/microsoft/windows-server-version-2004-server-core-installation.md) |  |  |

## CVEs this fix closes

| CVE | Priority | Component | CVSS | EPSS | Exploitation |
|---|---|---|---:|---:|---|
| [CVE-2020-1346](https://patchblox.com/security/data/cve/CVE-2020-1346.md) | High | Windows Update Stack | 7.8 | 0.0079 |  |

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 Patchblox finds out-of-date software on Windows, macOS and Linux and updates it through release rings: https://patchblox.com/demo

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