# KB4015551: April 2017 security update

KB4015551, released April 11, 2017, fixes 23 CVEs across 3 products. 3 of them are being exploited (CVE-2017-0199); 3 on CISA KEV. Patch Radar priority: Patch now.

- Web page: https://patchblox.com/security/fix/microsoft/kb4015551
- Platform: Microsoft
- Released: Apr 11, 2017
- Priority: Patch now (Closes CVE-2017-0199, exploited (CISA KEV, ransomware))
- CVEs: 23, exploited: 3, on CISA KEV: 3
- Vendor advisory: https://support.microsoft.com/help/4015551

## Applies to

| Product | Release | Fixed in |
|---|---|---|
| [Internet Explorer 10 on Windows Server 2012](https://patchblox.com/security/data/product/microsoft/internet-explorer-10-on-windows-server-2012.md) |  |  |
| [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-2017-0199](https://patchblox.com/security/data/cve/CVE-2017-0199.md) | Patch now | Microsoft Office | 6.7 | 0.9950 | CISA KEV, Ransomware |
| [CVE-2017-0210](https://patchblox.com/security/data/cve/CVE-2017-0210.md) | Patch now | Internet Explorer | 3.5 | 0.2233 | CISA KEV, Disclosed |
| [CVE-2016-0162](https://patchblox.com/security/data/cve/CVE-2016-0162.md) | Patch now | Internet Explorer | n/a | 0.2193 | CISA KEV |
| [CVE-2017-0211](https://patchblox.com/security/data/cve/CVE-2017-0211.md) | Urgent | Microsoft Windows | 5.0 | 0.1409 | More likely |
| [CVE-2017-0201](https://patchblox.com/security/data/cve/CVE-2017-0201.md) | Urgent | Microsoft Scripting Engine | 6.4 | 0.1388 |  |
| [CVE-2017-0158](https://patchblox.com/security/data/cve/CVE-2017-0158.md) | Urgent | Microsoft Scripting Engine | 7.5 | 0.1279 | More likely |
| [CVE-2017-0180](https://patchblox.com/security/data/cve/CVE-2017-0180.md) | Urgent | Windows Hyper-V | 7.6 | 0.0330 |  |
| [CVE-2017-0163](https://patchblox.com/security/data/cve/CVE-2017-0163.md) | Urgent | Windows Hyper-V | 7.6 | 0.0315 |  |
| [CVE-2017-0166](https://patchblox.com/security/data/cve/CVE-2017-0166.md) | High | Group Policy | 8.1 | 0.0642 |  |
| [CVE-2017-0168](https://patchblox.com/security/data/cve/CVE-2017-0168.md) | High | Windows Hyper-V | 7.7 | 0.0556 |  |
| [CVE-2017-0169](https://patchblox.com/security/data/cve/CVE-2017-0169.md) | High | Windows Hyper-V | 7.3 | 0.0156 |  |
| [CVE-2017-0156](https://patchblox.com/security/data/cve/CVE-2017-0156.md) | High | Microsoft Graphics Component | 7.0 | 0.0114 |  |
| [CVE-2017-0042](https://patchblox.com/security/data/cve/CVE-2017-0042.md) | Routine | Windows DirectShow | 3.7 | 0.2952 |  |
| [CVE-2013-6629](https://patchblox.com/security/data/cve/CVE-2013-6629.md) | Routine | Microsoft Graphics Component | 4.7 | 0.0973 |  |
| [CVE-2017-0192](https://patchblox.com/security/data/cve/CVE-2017-0192.md) | Routine | Microsoft Graphics Component | 4.4 | 0.0603 |  |
| [CVE-2017-0185](https://patchblox.com/security/data/cve/CVE-2017-0185.md) | Routine | Windows Hyper-V | 5.8 | 0.0567 |  |
| [CVE-2017-0191](https://patchblox.com/security/data/cve/CVE-2017-0191.md) | Routine | Microsoft Windows | 5.8 | 0.0473 |  |
| [CVE-2017-0186](https://patchblox.com/security/data/cve/CVE-2017-0186.md) | Routine | Windows Hyper-V | 5.8 | 0.0456 |  |
| [CVE-2017-0182](https://patchblox.com/security/data/cve/CVE-2017-0182.md) | Routine | Windows Hyper-V | 5.8 | 0.0441 |  |
| [CVE-2017-0183](https://patchblox.com/security/data/cve/CVE-2017-0183.md) | Routine | Windows Hyper-V | 5.8 | 0.0441 |  |
| [CVE-2017-0058](https://patchblox.com/security/data/cve/CVE-2017-0058.md) | Routine | Windows Kernel-Mode Drivers | 4.7 | 0.0366 |  |
| [CVE-2017-0188](https://patchblox.com/security/data/cve/CVE-2017-0188.md) | Routine | Windows Kernel-Mode Drivers | 4.4 | 0.0298 |  |
| [CVE-2017-0184](https://patchblox.com/security/data/cve/CVE-2017-0184.md) | Routine | Windows Hyper-V | 5.4 | 0.0168 |  |

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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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