CVE-2016-7255

Win32k Elevation of Privilege Vulnerability

CVE-2016-7255 is fixed in 27 products on 1 platform, first by KB3198586, released November 8, 2016. It is being exploited: CISA added it to the Known Exploited Vulnerabilities catalog on November 3, 2021, with known ransomware use. Patch Radar priority: Patch now.

Patch nowCISA KEVKnown ransomware use
CVSS
6.1
Important
Exploitation
Exploited
Reported by the vendor
CISA KEV
Nov 3, 2021
Federal due date May 3, 2022. Known ransomware use
EPSS
0.8097
99th 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 KB3198586 Nov 8, 2016
Windows 10 Version 1511 for x64-based Systems KB3198586 Nov 8, 2016
Windows 10 Version 1607 for 32-bit Systems KB3200970 Nov 8, 2016
Windows 10 Version 1607 for x64-based Systems KB3200970 Nov 8, 2016
Windows 10 for 32-bit Systems 10240.17190 KB3198585 Nov 8, 2016
Windows 10 for x64-based Systems 10240.17190 KB3198585 Nov 8, 2016
Windows 7 for 32-bit Systems Service Pack 1 KB3197867 Nov 8, 2016
Windows 7 for 32-bit Systems Service Pack 1 KB3197868 Nov 8, 2016
Windows 7 for x64-based Systems Service Pack 1 KB3197867 Nov 8, 2016
Windows 7 for x64-based Systems Service Pack 1 KB3197868 Nov 8, 2016
Windows 8.1 for 32-bit systems KB3197873 Nov 8, 2016
Windows 8.1 for 32-bit systems KB3197874 Nov 8, 2016
Windows 8.1 for x64-based systems KB3197873 Nov 8, 2016
Windows 8.1 for x64-based systems KB3197874 Nov 8, 2016
Windows RT 8.1 KB3197874 Nov 8, 2016
Windows Server 2008 R2 for Itanium-Based Systems Service Pack 1 KB3197867 Nov 8, 2016
Windows Server 2008 R2 for Itanium-Based Systems Service Pack 1 KB3197868 Nov 8, 2016
Windows Server 2008 R2 for x64-based Systems Service Pack 1 KB3197867 Nov 8, 2016
Windows Server 2008 R2 for x64-based Systems Service Pack 1 KB3197868 Nov 8, 2016
Windows Server 2008 R2 for x64-based Systems Service Pack 1 (Server Core installation) KB3197867 Nov 8, 2016
Windows Server 2008 R2 for x64-based Systems Service Pack 1 (Server Core installation) KB3197868 Nov 8, 2016
Windows Server 2008 for 32-bit Systems Service Pack 2 KB3198234 Nov 8, 2016
Windows Server 2008 for 32-bit Systems Service Pack 2 (Server Core installation) KB3198234 Nov 8, 2016
Windows Server 2008 for Itanium-Based Systems Service Pack 2 KB3198234 Nov 8, 2016
Windows Server 2008 for x64-based Systems Service Pack 2 KB3198234 Nov 8, 2016
Windows Server 2008 for x64-based Systems Service Pack 2 (Server Core installation) KB3198234 Nov 8, 2016
Windows Server 2012 KB3197877 Nov 8, 2016
Windows Server 2012 KB3197876 Nov 8, 2016
Windows Server 2012 (Server Core installation) KB3197877 Nov 8, 2016
Windows Server 2012 (Server Core installation) KB3197876 Nov 8, 2016
Windows Server 2012 R2 KB3197873 Nov 8, 2016
Windows Server 2012 R2 KB3197874 Nov 8, 2016
Windows Server 2012 R2 (Server Core installation) KB3197873 Nov 8, 2016
Windows Server 2012 R2 (Server Core installation) KB3197874 Nov 8, 2016
Windows Server 2016 KB3200970 Nov 8, 2016
Windows Server 2016 (Server Core installation) KB3200970 Nov 8, 2016
Windows Vista Service Pack 2 KB3198234 Nov 8, 2016
Windows Vista x64 Edition Service Pack 2 KB3198234 Nov 8, 2016