# KB4556852: May 2020 security update

KB4556852, released May 12, 2020, fixes 27 CVEs across 2 products. One of them is being exploited (CVE-2020-1054); 1 on CISA KEV. Patch Radar priority: Patch now.

- Web page: https://patchblox.com/security/fix/microsoft/kb4556852
- Platform: Microsoft
- Released: May 12, 2020
- Priority: Patch now (Closes CVE-2020-1054, exploited (CISA KEV))
- CVEs: 27, exploited: 1, on CISA KEV: 1
- Vendor advisory: https://support.microsoft.com/help/4556852

## Applies to

| Product | Release | Fixed in |
|---|---|---|
| [Windows Server 2012](https://patchblox.com/security/data/product/microsoft/windows-server-2012.md) |  |  |
| [Windows Server 2012 (Server Core installation)](https://patchblox.com/security/data/product/microsoft/windows-server-2012-server-core-installation.md) |  |  |

## CVEs this fix closes

| CVE | Priority | Component | CVSS | EPSS | Exploitation |
|---|---|---|---:|---:|---|
| [CVE-2020-1054](https://patchblox.com/security/data/cve/CVE-2020-1054.md) | Patch now | Microsoft Graphics Component | 7.0 | 0.5388 | CISA KEV |
| [CVE-2020-1153](https://patchblox.com/security/data/cve/CVE-2020-1153.md) | Urgent | Microsoft Graphics Component | 7.8 | 0.0396 |  |
| [CVE-2020-1143](https://patchblox.com/security/data/cve/CVE-2020-1143.md) | Urgent | Microsoft Windows | 7.0 | 0.0108 | More likely |
| [CVE-2020-1048](https://patchblox.com/security/data/cve/CVE-2020-1048.md) | High | Microsoft Windows | 7.8 | 0.1650 |  |
| [CVE-2020-1179](https://patchblox.com/security/data/cve/CVE-2020-1179.md) | High | Microsoft Graphics Component | n/a | 0.0522 |  |
| [CVE-2020-0909](https://patchblox.com/security/data/cve/CVE-2020-0909.md) | High | Windows Hyper-V | 7.5 | 0.0473 |  |
| [CVE-2020-1174](https://patchblox.com/security/data/cve/CVE-2020-1174.md) | High | Microsoft JET Database Engine | 7.8 | 0.0380 |  |
| [CVE-2020-1051](https://patchblox.com/security/data/cve/CVE-2020-1051.md) | High | Microsoft JET Database Engine | 7.8 | 0.0377 |  |
| [CVE-2020-1175](https://patchblox.com/security/data/cve/CVE-2020-1175.md) | High | Microsoft JET Database Engine | 7.8 | 0.0377 |  |
| [CVE-2020-1176](https://patchblox.com/security/data/cve/CVE-2020-1176.md) | High | Microsoft JET Database Engine | 7.8 | 0.0377 |  |
| [CVE-2020-1061](https://patchblox.com/security/data/cve/CVE-2020-1061.md) | High | Windows Scripting | 7.5 | 0.0335 |  |
| [CVE-2020-1112](https://patchblox.com/security/data/cve/CVE-2020-1112.md) | High | Microsoft Windows | 8.5 | 0.0329 |  |
| [CVE-2020-1067](https://patchblox.com/security/data/cve/CVE-2020-1067.md) | High | Microsoft Windows | 7.8 | 0.0254 |  |
| [CVE-2020-1070](https://patchblox.com/security/data/cve/CVE-2020-1070.md) | High | Microsoft Windows | 7.8 | 0.0115 |  |
| [CVE-2020-1079](https://patchblox.com/security/data/cve/CVE-2020-1079.md) | High | Microsoft Windows | 7.8 | 0.0099 |  |
| [CVE-2020-1010](https://patchblox.com/security/data/cve/CVE-2020-1010.md) | High | Microsoft Windows | 7.8 | 0.0098 |  |
| [CVE-2020-1081](https://patchblox.com/security/data/cve/CVE-2020-1081.md) | High | Microsoft Windows | 7.8 | 0.0095 |  |
| [CVE-2020-1114](https://patchblox.com/security/data/cve/CVE-2020-1114.md) | High | Windows Kernel | 7.8 | 0.0095 |  |
| [CVE-2020-1154](https://patchblox.com/security/data/cve/CVE-2020-1154.md) | High | Common Log File System Driver | 7.8 | 0.0095 |  |
| [CVE-2020-1078](https://patchblox.com/security/data/cve/CVE-2020-1078.md) | High | Microsoft Windows | 7.8 | 0.0084 |  |
| [CVE-2020-1113](https://patchblox.com/security/data/cve/CVE-2020-1113.md) | Routine | Windows Task Scheduler | 5.3 | 0.0631 |  |
| [CVE-2020-0963](https://patchblox.com/security/data/cve/CVE-2020-0963.md) | Routine | Microsoft Graphics Component | 5.5 | 0.0476 |  |
| [CVE-2020-1141](https://patchblox.com/security/data/cve/CVE-2020-1141.md) | Routine | Microsoft Graphics Component | 5.5 | 0.0202 |  |
| [CVE-2020-1072](https://patchblox.com/security/data/cve/CVE-2020-1072.md) | Routine | Microsoft Windows | 5.5 | 0.0128 |  |
| [CVE-2020-1116](https://patchblox.com/security/data/cve/CVE-2020-1116.md) | Routine | Microsoft Windows | 5.5 | 0.0128 |  |
| [CVE-2020-1076](https://patchblox.com/security/data/cve/CVE-2020-1076.md) | Routine | Microsoft Windows | 5.5 | 0.0110 |  |
| [CVE-2020-1071](https://patchblox.com/security/data/cve/CVE-2020-1071.md) | Routine | Microsoft Windows | 6.8 | 0.0104 |  |

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Data as of 2026-11-07T12:40:37Z 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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