# CVE-2017-8486: Win32k Information Disclosure Vulnerability CVE-2017-8486 is fixed in 27 products on 1 platform, first by KB4025344, released July 11, 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-2017-8486 - Priority: Urgent - CVSS: 4.7 (Important) - EPSS: 0.0221 - CISA KEV: not listed - Exploited (vendor report): no - Publicly disclosed: no - Vendor exploitability assessment: Exploitation More Likely - Published: Jul 11, 2017 - Vendor advisory: https://msrc.microsoft.com/update-guide/vulnerability/CVE-2017-8486 ## Description

An information disclosure vulnerability exists when the win32k component improperly provides kernel information. An attacker who successfully exploited the vulnerability could obtain information to further compromise the user’s system.

To exploit the vulnerability, an attacker would have to either log on locally to an affected system, or convince a locally authenticated user to execute a specially crafted application.

The security update addresses the vulnerability by correcting how win32k handles objects in memory.

## 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 Version 1607 for 32-bit Systems | 14393.1480 | [KB4025339](https://patchblox.com/security/data/fix/microsoft/kb4025339.md) | Jul 11, 2017 | | Microsoft | Windows 10 Version 1607 for x64-based Systems | 14393.1480 | [KB4025339](https://patchblox.com/security/data/fix/microsoft/kb4025339.md) | Jul 11, 2017 | | Microsoft | Windows 10 Version 1703 for 32-bit Systems | 15063.483 | [KB4025342](https://patchblox.com/security/data/fix/microsoft/kb4025342.md) | Jul 11, 2017 | | Microsoft | Windows 10 Version 1703 for x64-based Systems | 15063.483 | [KB4025342](https://patchblox.com/security/data/fix/microsoft/kb4025342.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 | | [KB4025877](https://patchblox.com/security/data/fix/microsoft/kb4025877.md) | Jul 11, 2017 | | Microsoft | Windows Server 2008 for 32-bit Systems Service Pack 2 (Server Core installation) | | [KB4025877](https://patchblox.com/security/data/fix/microsoft/kb4025877.md) | Jul 11, 2017 | | Microsoft | Windows Server 2008 for Itanium-Based Systems Service Pack 2 | | [KB4025877](https://patchblox.com/security/data/fix/microsoft/kb4025877.md) | Jul 11, 2017 | | Microsoft | Windows Server 2008 for x64-based Systems Service Pack 2 | | [KB4025877](https://patchblox.com/security/data/fix/microsoft/kb4025877.md) | Jul 11, 2017 | | Microsoft | Windows Server 2008 for x64-based Systems Service Pack 2 (Server Core installation) | | [KB4025877](https://patchblox.com/security/data/fix/microsoft/kb4025877.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 | | Microsoft | Windows Server 2016 | 14393.1480 | [KB4025339](https://patchblox.com/security/data/fix/microsoft/kb4025339.md) | Jul 11, 2017 | | Microsoft | Windows Server 2016 (Server Core installation) | 14393.1480 | [KB4025339](https://patchblox.com/security/data/fix/microsoft/kb4025339.md) | Jul 11, 2017 | --- 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