# KB4556798: May 2020 security update

KB4556798, released May 12, 2020, fixes 7 CVEs across 9 products. None of them is reported as exploited. Patch Radar priority: Urgent. The product is no longer supported.

- Web page: https://patchblox.com/security/fix/microsoft/kb4556798
- Platform: Microsoft
- Released: May 12, 2020
- Priority: Urgent (Closes CVE-2020-1062, exploitation more likely)
- CVEs: 7, exploited: 0, on CISA KEV: 0
- Vendor advisory: https://support.microsoft.com/help/4556798

## Applies to

| Product | Release | Fixed in |
|---|---|---|
| [Internet Explorer 11 on Windows 7 for 32-bit Systems Service Pack 1](https://patchblox.com/security/data/product/microsoft/internet-explorer-11-on-windows-7-for-32-bit-systems-service-pack-1.md) |  |  |
| [Internet Explorer 11 on Windows 7 for x64-based Systems Service Pack 1](https://patchblox.com/security/data/product/microsoft/internet-explorer-11-on-windows-7-for-x64-based-systems-service-pack-1.md) |  |  |
| [Internet Explorer 11 on Windows 8.1 for 32-bit systems](https://patchblox.com/security/data/product/microsoft/internet-explorer-11-on-windows-8.1-for-32-bit-systems.md) |  |  |
| [Internet Explorer 11 on Windows 8.1 for x64-based systems](https://patchblox.com/security/data/product/microsoft/internet-explorer-11-on-windows-8.1-for-x64-based-systems.md) |  |  |
| [Internet Explorer 11 on Windows Server 2008 R2 for x64-based Systems Service Pack 1](https://patchblox.com/security/data/product/microsoft/internet-explorer-11-on-windows-server-2008-r2-for-x64-based-systems-service-pack-1.md) |  |  |
| [Internet Explorer 11 on Windows Server 2012](https://patchblox.com/security/data/product/microsoft/internet-explorer-11-on-windows-server-2012.md) |  |  |
| [Internet Explorer 11 on Windows Server 2012 R2](https://patchblox.com/security/data/product/microsoft/internet-explorer-11-on-windows-server-2012-r2.md) |  |  |
| [Internet Explorer 9 on Windows Server 2008 for 32-bit Systems Service Pack 2](https://patchblox.com/security/data/product/microsoft/internet-explorer-9-on-windows-server-2008-for-32-bit-systems-service-pack-2.md) |  |  |
| [Internet Explorer 9 on Windows Server 2008 for x64-based Systems Service Pack 2](https://patchblox.com/security/data/product/microsoft/internet-explorer-9-on-windows-server-2008-for-x64-based-systems-service-pack-2.md) |  |  |

## CVEs this fix closes

| CVE | Priority | Component | CVSS | EPSS | Exploitation |
|---|---|---|---:|---:|---|
| [CVE-2020-1062](https://patchblox.com/security/data/cve/CVE-2020-1062.md) | Urgent | Internet Explorer | 6.4 | 0.0624 | More likely |
| [CVE-2020-1035](https://patchblox.com/security/data/cve/CVE-2020-1035.md) | Urgent | Microsoft Scripting Engine | 6.4 | 0.0325 | More likely |
| [CVE-2020-1058](https://patchblox.com/security/data/cve/CVE-2020-1058.md) | Urgent | Microsoft Scripting Engine | 6.4 | 0.0318 | More likely |
| [CVE-2020-1060](https://patchblox.com/security/data/cve/CVE-2020-1060.md) | Urgent | Microsoft Scripting Engine | 6.4 | 0.0318 | More likely |
| [CVE-2020-1064](https://patchblox.com/security/data/cve/CVE-2020-1064.md) | Routine | Internet Explorer | 6.4 | 0.0325 |  |
| [CVE-2020-1093](https://patchblox.com/security/data/cve/CVE-2020-1093.md) | Routine | Internet Explorer | 6.4 | 0.0325 |  |
| [CVE-2020-1092](https://patchblox.com/security/data/cve/CVE-2020-1092.md) | Routine | Internet Explorer | 6.4 | 0.0320 |  |

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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