# CVE-2017-8587: Windows Explorer Denial of Service Vulnerability CVE-2017-8587 is fixed in 21 products on 1 platform, first by KB4025344, released July 11, 2017. It is not reported as exploited. Patch Radar priority: Routine. - Web page: https://patchblox.com/security/cve/CVE-2017-8587 - Priority: Routine - CVSS: 6.5 (Important) - EPSS: 0.0595 - CISA KEV: not listed - Exploited (vendor report): no - Publicly disclosed: yes - Vendor exploitability assessment: Exploitation Unlikely - Published: Jul 11, 2017 - Vendor advisory: https://msrc.microsoft.com/update-guide/vulnerability/CVE-2017-8587 ## Description

An Denial Of Service vulnerability exists when Windows Explorer attempts to open a non-existent file. An attacker who successfully exploited this vulnerability could cause a denial of service.

A attacker could exploit this vulnerability by hosting a specially crafted web site and convince a user to browse to the page, containing the reference to the non-existing file, and cause the victim's system to stop responding. An attacker could not force a user to view the attacker-controlled content. Instead, an attacker would have to convince a user to take action. For example, an attacker could trick a user into clicking a link that takes the user to the attacker's site

The update addresses the vulnerability by correcting how Windows Explorer handles open attempts for non-existent files.

## Where it's fixed | Platform | Product | Fixed in | Fix | Released | |---|---|---|---|---| | Microsoft | Windows 10 Version 1511 for 32-bit Systems | 10586.1007 | [KB4025344](https://patchblox.com/security/data/fix/microsoft/kb4025344.md) | Jul 11, 2017 | | Microsoft | Windows 10 Version 1511 for x64-based Systems | 10586.1007 | [KB4025344](https://patchblox.com/security/data/fix/microsoft/kb4025344.md) | Jul 11, 2017 | | Microsoft | Windows 10 for 32-bit Systems | 10240.17488 | [KB4025338](https://patchblox.com/security/data/fix/microsoft/kb4025338.md) | Jul 11, 2017 | | Microsoft | Windows 10 for x64-based Systems | 10240.17488 | [KB4025338](https://patchblox.com/security/data/fix/microsoft/kb4025338.md) | Jul 11, 2017 | | Microsoft | Windows 7 for 32-bit Systems Service Pack 1 | | [KB4025341](https://patchblox.com/security/data/fix/microsoft/kb4025341.md) | Jul 11, 2017 | | Microsoft | Windows 7 for 32-bit Systems Service Pack 1 | | [KB4025337](https://patchblox.com/security/data/fix/microsoft/kb4025337.md) | Jul 11, 2017 | | Microsoft | Windows 7 for x64-based Systems Service Pack 1 | | [KB4025341](https://patchblox.com/security/data/fix/microsoft/kb4025341.md) | Jul 11, 2017 | | Microsoft | Windows 7 for x64-based Systems Service Pack 1 | | [KB4025337](https://patchblox.com/security/data/fix/microsoft/kb4025337.md) | Jul 11, 2017 | | Microsoft | Windows 8.1 for 32-bit systems | | [KB4025333](https://patchblox.com/security/data/fix/microsoft/kb4025333.md) | Jul 11, 2017 | | Microsoft | Windows 8.1 for 32-bit systems | | [KB4025336](https://patchblox.com/security/data/fix/microsoft/kb4025336.md) | Jul 11, 2017 | | Microsoft | Windows 8.1 for x64-based systems | | [KB4025333](https://patchblox.com/security/data/fix/microsoft/kb4025333.md) | Jul 11, 2017 | | Microsoft | Windows 8.1 for x64-based systems | | [KB4025336](https://patchblox.com/security/data/fix/microsoft/kb4025336.md) | Jul 11, 2017 | | Microsoft | Windows RT 8.1 | | [KB4025336](https://patchblox.com/security/data/fix/microsoft/kb4025336.md) | Jul 11, 2017 | | Microsoft | Windows Server 2008 R2 for Itanium-Based Systems Service Pack 1 | | [KB4025341](https://patchblox.com/security/data/fix/microsoft/kb4025341.md) | Jul 11, 2017 | | Microsoft | Windows Server 2008 R2 for Itanium-Based Systems Service Pack 1 | | [KB4025337](https://patchblox.com/security/data/fix/microsoft/kb4025337.md) | Jul 11, 2017 | | Microsoft | Windows Server 2008 R2 for x64-based Systems Service Pack 1 | | [KB4025341](https://patchblox.com/security/data/fix/microsoft/kb4025341.md) | Jul 11, 2017 | | Microsoft | Windows Server 2008 R2 for x64-based Systems Service Pack 1 | | [KB4025337](https://patchblox.com/security/data/fix/microsoft/kb4025337.md) | Jul 11, 2017 | | Microsoft | Windows Server 2008 R2 for x64-based Systems Service Pack 1 (Server Core installation) | | [KB4025341](https://patchblox.com/security/data/fix/microsoft/kb4025341.md) | Jul 11, 2017 | | Microsoft | Windows Server 2008 R2 for x64-based Systems Service Pack 1 (Server Core installation) | | [KB4025337](https://patchblox.com/security/data/fix/microsoft/kb4025337.md) | Jul 11, 2017 | | Microsoft | Windows Server 2008 for 32-bit Systems Service Pack 2 | | [KB4025674](https://patchblox.com/security/data/fix/microsoft/kb4025674.md) | Jul 11, 2017 | | Microsoft | Windows Server 2008 for 32-bit Systems Service Pack 2 (Server Core installation) | | [KB4025674](https://patchblox.com/security/data/fix/microsoft/kb4025674.md) | Jul 11, 2017 | | Microsoft | Windows Server 2008 for Itanium-Based Systems Service Pack 2 | | [KB4025674](https://patchblox.com/security/data/fix/microsoft/kb4025674.md) | Jul 11, 2017 | | Microsoft | Windows Server 2008 for x64-based Systems Service Pack 2 | | [KB4025674](https://patchblox.com/security/data/fix/microsoft/kb4025674.md) | Jul 11, 2017 | | Microsoft | Windows Server 2008 for x64-based Systems Service Pack 2 (Server Core installation) | | [KB4025674](https://patchblox.com/security/data/fix/microsoft/kb4025674.md) | Jul 11, 2017 | | Microsoft | Windows Server 2012 | | [KB4025343](https://patchblox.com/security/data/fix/microsoft/kb4025343.md) | Jul 11, 2017 | | Microsoft | Windows Server 2012 | | [KB4025331](https://patchblox.com/security/data/fix/microsoft/kb4025331.md) | Jul 11, 2017 | | Microsoft | Windows Server 2012 (Server Core installation) | | [KB4025343](https://patchblox.com/security/data/fix/microsoft/kb4025343.md) | Jul 11, 2017 | | Microsoft | Windows Server 2012 (Server Core installation) | | [KB4025331](https://patchblox.com/security/data/fix/microsoft/kb4025331.md) | Jul 11, 2017 | | Microsoft | Windows Server 2012 R2 | | [KB4025333](https://patchblox.com/security/data/fix/microsoft/kb4025333.md) | Jul 11, 2017 | | Microsoft | Windows Server 2012 R2 | | [KB4025336](https://patchblox.com/security/data/fix/microsoft/kb4025336.md) | Jul 11, 2017 | | Microsoft | Windows Server 2012 R2 (Server Core installation) | | [KB4025333](https://patchblox.com/security/data/fix/microsoft/kb4025333.md) | Jul 11, 2017 | | Microsoft | Windows Server 2012 R2 (Server Core installation) | | [KB4025336](https://patchblox.com/security/data/fix/microsoft/kb4025336.md) | Jul 11, 2017 | --- Data as of 2026-11-08T06:59:42Z UTC. 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