# KB4018556: May 2017 security update

KB4018556, released May 9, 2017, fixes 4 CVEs across 5 products. One of them is being exploited (CVE-2017-0213); 1 on CISA KEV. Patch Radar priority: Patch now. The product is no longer supported.

- Web page: https://patchblox.com/security/fix/microsoft/kb4018556
- Platform: Microsoft
- Released: May 9, 2017
- Priority: Patch now (Closes CVE-2017-0213, exploited (CISA KEV, ransomware))
- CVEs: 4, exploited: 1, on CISA KEV: 1
- Vendor advisory: https://support.microsoft.com/help/4018556

## Applies to

| Product | Release | Fixed in |
|---|---|---|
| [Windows Server 2008 for 32-bit Systems Service Pack 2](https://patchblox.com/security/data/product/microsoft/windows-server-2008-for-32-bit-systems-service-pack-2.md) |  |  |
| [Windows Server 2008 for 32-bit Systems Service Pack 2 (Server Core installation)](https://patchblox.com/security/data/product/microsoft/windows-server-2008-for-32-bit-systems-service-pack-2-server-core-installation.md) |  |  |
| [Windows Server 2008 for Itanium-Based Systems Service Pack 2](https://patchblox.com/security/data/product/microsoft/windows-server-2008-for-itanium-based-systems-service-pack-2.md) |  |  |
| [Windows Server 2008 for x64-based Systems Service Pack 2](https://patchblox.com/security/data/product/microsoft/windows-server-2008-for-x64-based-systems-service-pack-2.md) |  |  |
| [Windows Server 2008 for x64-based Systems Service Pack 2 (Server Core installation)](https://patchblox.com/security/data/product/microsoft/windows-server-2008-for-x64-based-systems-service-pack-2-server-core-installation.md) |  |  |

## CVEs this fix closes

| CVE | Priority | Component | CVSS | EPSS | Exploitation |
|---|---|---|---:|---:|---|
| [CVE-2017-0213](https://patchblox.com/security/data/cve/CVE-2017-0213.md) | Patch now | Windows COM | 6.7 | 0.8426 | CISA KEV, Ransomware |
| [CVE-2017-0214](https://patchblox.com/security/data/cve/CVE-2017-0214.md) | Urgent | Windows COM | 6.7 | 0.0346 | More likely |
| [CVE-2017-0244](https://patchblox.com/security/data/cve/CVE-2017-0244.md) | High | Microsoft Graphics Component | 7.0 | 0.0200 |  |
| [CVE-2017-0258](https://patchblox.com/security/data/cve/CVE-2017-0258.md) | Routine | Windows Kernel | 4.7 | 0.0736 |  |

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 Patchblox finds out-of-date software on Windows, macOS and Linux and updates it through release rings: https://patchblox.com/demo