# CVE-2017-8620: Windows Search Remote Code Execution Vulnerability CVE-2017-8620 is fixed in 27 products on 1 platform, first by KB4034660, released August 8, 2017. It is not reported as exploited, but the vendor rates exploitation more likely. Patch Radar priority: Urgent. - Web page: https://patchblox.com/security/cve/CVE-2017-8620 - Priority: Urgent - CVSS: 8.1 (Critical) - EPSS: 0.5733 - CISA KEV: not listed - Exploited (vendor report): no - Publicly disclosed: no - Vendor exploitability assessment: Exploitation More Likely - Published: Aug 8, 2017 - Vendor advisory: https://msrc.microsoft.com/update-guide/vulnerability/CVE-2017-8620 ## Description

A remote code execution vulnerability exists when Windows Search handles objects in memory. An attacker who successfully exploited this vulnerability could take control of the affected system. An attacker could then install programs; view, change, or delete data; or create new accounts with full user rights.

To exploit the vulnerability, the attacker could send specially crafted messages to the Windows Search service. An attacker with access to a target computer could exploit this vulnerability to elevate privileges and take control of the computer. Additionally, in an enterprise scenario, a remote unauthenticated attacker could remotely trigger the vulnerability through an SMB connection and then take control of a target computer.

The security update addresses the vulnerability by correcting how Windows Search handles objects in memory.

## Where it's fixed | Platform | Product | Fixed in | Fix | Released | |---|---|---|---|---| | Microsoft | Windows 10 Version 1511 for 32-bit Systems | 10586.1045 | [KB4034660](https://patchblox.com/security/data/fix/microsoft/kb4034660.md) | Aug 8, 2017 | | Microsoft | Windows 10 Version 1511 for x64-based Systems | 10586.1045 | [KB4034660](https://patchblox.com/security/data/fix/microsoft/kb4034660.md) | Aug 8, 2017 | | Microsoft | Windows 10 Version 1607 for 32-bit Systems | 14393.1593 | [KB4034658](https://patchblox.com/security/data/fix/microsoft/kb4034658.md) | Aug 8, 2017 | | Microsoft | Windows 10 Version 1607 for x64-based Systems | 14393.1593 | [KB4034658](https://patchblox.com/security/data/fix/microsoft/kb4034658.md) | Aug 8, 2017 | | Microsoft | Windows 10 Version 1703 for 32-bit Systems | 15063.540 | [KB4034674](https://patchblox.com/security/data/fix/microsoft/kb4034674.md) | Aug 8, 2017 | | Microsoft | Windows 10 Version 1703 for x64-based Systems | 15063.540 | [KB4034674](https://patchblox.com/security/data/fix/microsoft/kb4034674.md) | Aug 8, 2017 | | Microsoft | Windows 10 for 32-bit Systems | 10240.17533 | [KB4034668](https://patchblox.com/security/data/fix/microsoft/kb4034668.md) | Aug 8, 2017 | | Microsoft | Windows 10 for x64-based Systems | 10240.17533 | [KB4034668](https://patchblox.com/security/data/fix/microsoft/kb4034668.md) | Aug 8, 2017 | | Microsoft | Windows 7 for 32-bit Systems Service Pack 1 | | [KB4034679](https://patchblox.com/security/data/fix/microsoft/kb4034679.md) | Aug 8, 2017 | | Microsoft | Windows 7 for 32-bit Systems Service Pack 1 | | [KB4034664](https://patchblox.com/security/data/fix/microsoft/kb4034664.md) | Aug 8, 2017 | | Microsoft | Windows 7 for x64-based Systems Service Pack 1 | | [KB4034679](https://patchblox.com/security/data/fix/microsoft/kb4034679.md) | Aug 8, 2017 | | Microsoft | Windows 7 for x64-based Systems Service Pack 1 | | [KB4034664](https://patchblox.com/security/data/fix/microsoft/kb4034664.md) | Aug 8, 2017 | | Microsoft | Windows 8.1 for 32-bit systems | | [KB4034672](https://patchblox.com/security/data/fix/microsoft/kb4034672.md) | Aug 8, 2017 | | Microsoft | Windows 8.1 for 32-bit systems | | [KB4034681](https://patchblox.com/security/data/fix/microsoft/kb4034681.md) | Aug 8, 2017 | | Microsoft | Windows 8.1 for x64-based systems | | [KB4034672](https://patchblox.com/security/data/fix/microsoft/kb4034672.md) | Aug 8, 2017 | | Microsoft | Windows 8.1 for x64-based systems | | [KB4034681](https://patchblox.com/security/data/fix/microsoft/kb4034681.md) | Aug 8, 2017 | | Microsoft | Windows RT 8.1 | | [KB4034681](https://patchblox.com/security/data/fix/microsoft/kb4034681.md) | Aug 8, 2017 | | Microsoft | Windows Server 2008 R2 for Itanium-Based Systems Service Pack 1 | | [KB4034679](https://patchblox.com/security/data/fix/microsoft/kb4034679.md) | Aug 8, 2017 | | Microsoft | Windows Server 2008 R2 for Itanium-Based Systems Service Pack 1 | | [KB4034664](https://patchblox.com/security/data/fix/microsoft/kb4034664.md) | Aug 8, 2017 | | Microsoft | Windows Server 2008 R2 for x64-based Systems Service Pack 1 | | [KB4034679](https://patchblox.com/security/data/fix/microsoft/kb4034679.md) | Aug 8, 2017 | | Microsoft | Windows Server 2008 R2 for x64-based Systems Service Pack 1 | | [KB4034664](https://patchblox.com/security/data/fix/microsoft/kb4034664.md) | Aug 8, 2017 | | Microsoft | Windows Server 2008 R2 for x64-based Systems Service Pack 1 (Server Core installation) | | [KB4034679](https://patchblox.com/security/data/fix/microsoft/kb4034679.md) | Aug 8, 2017 | | Microsoft | Windows Server 2008 R2 for x64-based Systems Service Pack 1 (Server Core installation) | | [KB4034664](https://patchblox.com/security/data/fix/microsoft/kb4034664.md) | Aug 8, 2017 | | Microsoft | Windows Server 2008 for 32-bit Systems Service Pack 2 | | [KB4034034](https://patchblox.com/security/data/fix/microsoft/kb4034034.md) | Aug 8, 2017 | | Microsoft | Windows Server 2008 for 32-bit Systems Service Pack 2 (Server Core installation) | | [KB4034034](https://patchblox.com/security/data/fix/microsoft/kb4034034.md) | Aug 8, 2017 | | Microsoft | Windows Server 2008 for Itanium-Based Systems Service Pack 2 | | [KB4034034](https://patchblox.com/security/data/fix/microsoft/kb4034034.md) | Aug 8, 2017 | | Microsoft | Windows Server 2008 for x64-based Systems Service Pack 2 | | [KB4034034](https://patchblox.com/security/data/fix/microsoft/kb4034034.md) | Aug 8, 2017 | | Microsoft | Windows Server 2008 for x64-based Systems Service Pack 2 (Server Core installation) | | [KB4034034](https://patchblox.com/security/data/fix/microsoft/kb4034034.md) | Aug 8, 2017 | | Microsoft | Windows Server 2012 | | [KB4034666](https://patchblox.com/security/data/fix/microsoft/kb4034666.md) | Aug 8, 2017 | | Microsoft | Windows Server 2012 | | [KB4034665](https://patchblox.com/security/data/fix/microsoft/kb4034665.md) | Aug 8, 2017 | | Microsoft | Windows Server 2012 (Server Core installation) | | [KB4034666](https://patchblox.com/security/data/fix/microsoft/kb4034666.md) | Aug 8, 2017 | | Microsoft | Windows Server 2012 (Server Core installation) | | [KB4034665](https://patchblox.com/security/data/fix/microsoft/kb4034665.md) | Aug 8, 2017 | | Microsoft | Windows Server 2012 R2 | | [KB4034672](https://patchblox.com/security/data/fix/microsoft/kb4034672.md) | Aug 8, 2017 | | Microsoft | Windows Server 2012 R2 | | [KB4034681](https://patchblox.com/security/data/fix/microsoft/kb4034681.md) | Aug 8, 2017 | | Microsoft | Windows Server 2012 R2 (Server Core installation) | | [KB4034672](https://patchblox.com/security/data/fix/microsoft/kb4034672.md) | Aug 8, 2017 | | Microsoft | Windows Server 2012 R2 (Server Core installation) | | [KB4034681](https://patchblox.com/security/data/fix/microsoft/kb4034681.md) | Aug 8, 2017 | | Microsoft | Windows Server 2016 | 14393.1593 | [KB4034658](https://patchblox.com/security/data/fix/microsoft/kb4034658.md) | Aug 8, 2017 | | Microsoft | Windows Server 2016 (Server Core installation) | 14393.1593 | [KB4034658](https://patchblox.com/security/data/fix/microsoft/kb4034658.md) | Aug 8, 2017 | --- Data as of 2026-11-08T06:59:42Z UTC. 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