# KB4034681: August 2017 security update

KB4034681, released August 8, 2017, fixes 17 CVEs across 9 products. None of them is reported as exploited. Patch Radar priority: Urgent.

- Web page: https://patchblox.com/security/fix/microsoft/kb4034681
- Platform: Microsoft
- Released: Aug 8, 2017
- Priority: Urgent (Closes CVE-2017-8636, exploitation more likely)
- CVEs: 17, exploited: 0, on CISA KEV: 0
- Vendor advisory: https://support.microsoft.com/help/4034681

## Applies to

| Product | Release | Fixed in |
|---|---|---|
| [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 RT 8.1](https://patchblox.com/security/data/product/microsoft/internet-explorer-11-on-windows-rt-8.1.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) |  |  |
| [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-2017-8636](https://patchblox.com/security/data/cve/CVE-2017-8636.md) | Urgent | Microsoft Scripting Engine | 4.2 | 0.7212 | More likely |
| [CVE-2017-8641](https://patchblox.com/security/data/cve/CVE-2017-8641.md) | Urgent | Microsoft Scripting Engine | 4.2 | 0.7161 | More likely |
| [CVE-2017-8620](https://patchblox.com/security/data/cve/CVE-2017-8620.md) | Urgent | Microsoft Windows Search Component | 8.1 | 0.5733 | More likely |
| [CVE-2017-8635](https://patchblox.com/security/data/cve/CVE-2017-8635.md) | Urgent | Microsoft Scripting Engine | 4.2 | 0.5588 | More likely |
| [CVE-2017-0228](https://patchblox.com/security/data/cve/CVE-2017-0228.md) | Urgent | Microsoft Edge | 7.5 | 0.1699 | More likely |
| [CVE-2017-0293](https://patchblox.com/security/data/cve/CVE-2017-0293.md) | Urgent | Microsoft Windows PDF | 3.6 | 0.1442 |  |
| [CVE-2017-8653](https://patchblox.com/security/data/cve/CVE-2017-8653.md) | Urgent | Internet Explorer | 3.1 | 0.0918 | More likely |
| [CVE-2017-8669](https://patchblox.com/security/data/cve/CVE-2017-8669.md) | Urgent | Internet Explorer | 7.5 | 0.0847 | More likely |
| [CVE-2017-8591](https://patchblox.com/security/data/cve/CVE-2017-8591.md) | Urgent | Windows Shell | 8.8 | 0.0397 |  |
| [CVE-2017-8633](https://patchblox.com/security/data/cve/CVE-2017-8633.md) | Urgent | Microsoft Windows | 7.5 | 0.0389 | Disclosed |
| [CVE-2017-8666](https://patchblox.com/security/data/cve/CVE-2017-8666.md) | Urgent | Windows Kernel-Mode Drivers | 7.0 | 0.0232 | More likely |
| [CVE-2017-8624](https://patchblox.com/security/data/cve/CVE-2017-8624.md) | Urgent | Common Log File System Driver | 8.8 | 0.0130 | More likely |
| [CVE-2017-8593](https://patchblox.com/security/data/cve/CVE-2017-8593.md) | Urgent | Windows Kernel-Mode Drivers | 7.0 | 0.0103 | More likely |
| [CVE-2017-8664](https://patchblox.com/security/data/cve/CVE-2017-8664.md) | High | Windows Hyper-V | 7.8 | 0.0397 |  |
| [CVE-2017-0299](https://patchblox.com/security/data/cve/CVE-2017-0299.md) | Routine | Windows Kernel | 4.7 | 0.0479 |  |
| [CVE-2017-0174](https://patchblox.com/security/data/cve/CVE-2017-0174.md) | Routine | Microsoft Windows | 6.5 | 0.0258 |  |
| [CVE-2017-8668](https://patchblox.com/security/data/cve/CVE-2017-8668.md) | Routine | Volume Manager Driver | 4.7 | 0.0243 |  |

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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