# KB4578013: August 2020 security update

KB4578013, released August 11, 2020, fixes 2 CVEs across 5 products. None of them is reported as exploited. Patch Radar priority: High.

- Web page: https://patchblox.com/security/fix/microsoft/kb4578013
- Platform: Microsoft
- Released: Aug 11, 2020
- Priority: High (Closes CVE-2020-1530, high severity)
- CVEs: 2, exploited: 0, on CISA KEV: 0
- Vendor advisory: https://support.microsoft.com/help/4578013

## Applies to

| Product | Release | Fixed in |
|---|---|---|
| [Windows 8.1 for 32-bit systems](https://patchblox.com/security/data/product/microsoft/windows-8.1-for-32-bit-systems.md) |  |  |
| [Windows 8.1 for x64-based systems](https://patchblox.com/security/data/product/microsoft/windows-8.1-for-x64-based-systems.md) |  |  |
| [Windows RT 8.1](https://patchblox.com/security/data/product/microsoft/windows-rt-8.1.md) |  |  |
| [Windows Server 2012 R2](https://patchblox.com/security/data/product/microsoft/windows-server-2012-r2.md) |  |  |
| [Windows Server 2012 R2 (Server Core installation)](https://patchblox.com/security/data/product/microsoft/windows-server-2012-r2-server-core-installation.md) |  |  |

## CVEs this fix closes

| CVE | Priority | Component | CVSS | EPSS | Exploitation |
|---|---|---|---:|---:|---|
| [CVE-2020-1530](https://patchblox.com/security/data/cve/CVE-2020-1530.md) | High | Microsoft Windows | 7.8 | 0.0101 |  |
| [CVE-2020-1537](https://patchblox.com/security/data/cve/CVE-2020-1537.md) | High | Microsoft Windows | 7.8 | 0.0080 |  |

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 Patchblox finds out-of-date software on Windows, macOS and Linux and updates it through release rings: https://patchblox.com/demo