CVE-2017-8466

Win32k Elevation of Privilege Vulnerability

CVE-2017-8466 is fixed in 13 products on 1 platform, first by KB4022714, released June 13, 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
0.0108
65th percentile

<p>An elevation of privilege vulnerability exists in Windows when the Windows kernel-mode driver fails to properly handle objects in memory. An attacker who successfully exploited this vulnerability could run arbitrary code in kernel mode. An attacker could then install programs; view, change, or delete data; or create new accounts with full user rights.</p> <p>To exploit this vulnerability, an attacker would first have to log on to the system. An attacker could then run a specially crafted application that could exploit the vulnerability and take control of an affected system.</p> <p>The update addresses this vulnerability by correcting how the Windows kernel-mode driver handles objects in memory.</p>

Where it's fixed

ProductFixed inFixReleased
Microsoft
Windows 10 Version 1511 for 32-bit Systems 10586.962 KB4022714 Jun 13, 2017
Windows 10 Version 1511 for x64-based Systems 10586.962 KB4022714 Jun 13, 2017
Windows 10 Version 1607 for 32-bit Systems 14393.1358 KB4022715 Jun 13, 2017
Windows 10 Version 1607 for x64-based Systems 14393.1358 KB4022715 Jun 13, 2017
Windows 10 for 32-bit Systems 10240.17443 KB4022727 Jun 13, 2017
Windows 10 for x64-based Systems 10240.17443 KB4022727 Jun 13, 2017
Windows 8.1 for 32-bit systems KB4022717 Jun 13, 2017
Windows 8.1 for 32-bit systems KB4022726 Jun 13, 2017
Windows 8.1 for x64-based systems KB4022717 Jun 13, 2017
Windows 8.1 for x64-based systems KB4022726 Jun 13, 2017
Windows RT 8.1 KB4022726 Jun 13, 2017
Windows Server 2012 R2 KB4022717 Jun 13, 2017
Windows Server 2012 R2 KB4022726 Jun 13, 2017
Windows Server 2012 R2 (Server Core installation) KB4022717 Jun 13, 2017
Windows Server 2012 R2 (Server Core installation) KB4022726 Jun 13, 2017
Windows Server 2016 14393.1358 KB4022715 Jun 13, 2017
Windows Server 2016 (Server Core installation) 14393.1358 KB4022715 Jun 13, 2017