CVE-2017-8666

Win32k Information Disclosure Vulnerability

CVE-2017-8666 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.

Urgent
CVSS
7.0
Important
Exploitation
More likely
Vendor assessment
CISA KEV
Not listed
Not in the Known Exploited Vulnerabilities catalog
EPSS
0.0232
83rd percentile

<p>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.</p> <p>To exploit this vulnerability, an attacker would have to log on to an affected system and run a specially crafted application.</p> <p>The security update addresses the vulnerability by correcting how win32k handles objects in memory.</p>

Where it's fixed

ProductFixed inFixReleased
Microsoft
Windows 10 Version 1511 for 32-bit Systems 10586.1045 KB4034660 Aug 8, 2017
Windows 10 Version 1511 for x64-based Systems 10586.1045 KB4034660 Aug 8, 2017
Windows 10 Version 1607 for 32-bit Systems 14393.1593 KB4034658 Aug 8, 2017
Windows 10 Version 1607 for x64-based Systems 14393.1593 KB4034658 Aug 8, 2017
Windows 10 Version 1703 for 32-bit Systems 15063.540 KB4034674 Aug 8, 2017
Windows 10 Version 1703 for x64-based Systems 15063.540 KB4034674 Aug 8, 2017
Windows 10 for 32-bit Systems 10240.17533 KB4034668 Aug 8, 2017
Windows 10 for x64-based Systems 10240.17533 KB4034668 Aug 8, 2017
Windows 7 for 32-bit Systems Service Pack 1 KB4034679 Aug 8, 2017
Windows 7 for 32-bit Systems Service Pack 1 KB4034664 Aug 8, 2017
Windows 7 for x64-based Systems Service Pack 1 KB4034679 Aug 8, 2017
Windows 7 for x64-based Systems Service Pack 1 KB4034664 Aug 8, 2017
Windows 8.1 for 32-bit systems KB4034672 Aug 8, 2017
Windows 8.1 for 32-bit systems KB4034681 Aug 8, 2017
Windows 8.1 for x64-based systems KB4034672 Aug 8, 2017
Windows 8.1 for x64-based systems KB4034681 Aug 8, 2017
Windows RT 8.1 KB4034681 Aug 8, 2017
Windows Server 2008 R2 for Itanium-Based Systems Service Pack 1 KB4034679 Aug 8, 2017
Windows Server 2008 R2 for Itanium-Based Systems Service Pack 1 KB4034664 Aug 8, 2017
Windows Server 2008 R2 for x64-based Systems Service Pack 1 KB4034679 Aug 8, 2017
Windows Server 2008 R2 for x64-based Systems Service Pack 1 KB4034664 Aug 8, 2017
Windows Server 2008 R2 for x64-based Systems Service Pack 1 (Server Core installation) KB4034679 Aug 8, 2017
Windows Server 2008 R2 for x64-based Systems Service Pack 1 (Server Core installation) KB4034664 Aug 8, 2017
Windows Server 2008 for 32-bit Systems Service Pack 2 KB4035055 Aug 8, 2017
Windows Server 2008 for 32-bit Systems Service Pack 2 (Server Core installation) KB4035055 Aug 8, 2017
Windows Server 2008 for Itanium-Based Systems Service Pack 2 KB4035055 Aug 8, 2017
Windows Server 2008 for x64-based Systems Service Pack 2 KB4035055 Aug 8, 2017
Windows Server 2008 for x64-based Systems Service Pack 2 (Server Core installation) KB4035055 Aug 8, 2017
Windows Server 2012 KB4034666 Aug 8, 2017
Windows Server 2012 KB4034665 Aug 8, 2017
Windows Server 2012 (Server Core installation) KB4034666 Aug 8, 2017
Windows Server 2012 (Server Core installation) KB4034665 Aug 8, 2017
Windows Server 2012 R2 KB4034672 Aug 8, 2017
Windows Server 2012 R2 KB4034681 Aug 8, 2017
Windows Server 2012 R2 (Server Core installation) KB4034672 Aug 8, 2017
Windows Server 2012 R2 (Server Core installation) KB4034681 Aug 8, 2017
Windows Server 2016 14393.1593 KB4034658 Aug 8, 2017
Windows Server 2016 (Server Core installation) 14393.1593 KB4034658 Aug 8, 2017