CVE-2018-8440

Windows ALPC Elevation of Privilege Vulnerability

CVE-2018-8440 is fixed in 31 products on 1 platform, first by KB4457131, released September 11, 2018. It is being exploited: CISA added it to the Known Exploited Vulnerabilities catalog on March 28, 2022, with known ransomware use. Patch Radar priority: Patch now.

Patch nowCISA KEVKnown ransomware usePublicly disclosed
CVSS
7.8
Important
Exploitation
Exploited
Reported by the vendor
CISA KEV
Mar 28, 2022
Federal due date Apr 18, 2022. Known ransomware use
EPSS
0.1853
97th percentile

<p>An elevation of privilege vulnerability exists when Windows improperly handles calls to Advanced Local Procedure Call (ALPC).</p> <p>An attacker who successfully exploited this vulnerability could run arbitrary code in the security context of the local system. 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 over an affected system.</p> <p>The update addresses the vulnerability by correcting how Windows handles calls to ALPC.</p>

Where it's fixed

ProductFixed inFixReleased
Microsoft
Windows 10 Version 1607 for 32-bit Systems 14393.2485 KB4457131 Sep 11, 2018
Windows 10 Version 1607 for x64-based Systems 14393.2485 KB4457131 Sep 11, 2018
Windows 10 Version 1703 for 32-bit Systems 15063.1324 KB4457138 Sep 11, 2018
Windows 10 Version 1703 for x64-based Systems 15063.1324 KB4457138 Sep 11, 2018
Windows 10 Version 1709 for 32-bit Systems 16299.665 KB4457142 Sep 11, 2018
Windows 10 Version 1709 for x64-based Systems 16299.665 KB4457142 Sep 11, 2018
Windows 10 Version 1803 for 32-bit Systems 17134.285 KB4457128 Sep 11, 2018
Windows 10 Version 1803 for x64-based Systems 17134.285 KB4457128 Sep 11, 2018
Windows 10 for 32-bit Systems 10240.17976 KB4457132 Sep 11, 2018
Windows 10 for x64-based Systems 10240.17976 KB4457132 Sep 11, 2018
Windows 7 for 32-bit Systems Service Pack 1 KB4457144 Sep 11, 2018
Windows 7 for 32-bit Systems Service Pack 1 KB4457145 Sep 11, 2018
Windows 7 for x64-based Systems Service Pack 1 KB4457144 Sep 11, 2018
Windows 7 for x64-based Systems Service Pack 1 KB4457145 Sep 11, 2018
Windows 8.1 for 32-bit systems KB4457129 Sep 11, 2018
Windows 8.1 for 32-bit systems KB4457143 Sep 11, 2018
Windows 8.1 for x64-based systems KB4457129 Sep 11, 2018
Windows 8.1 for x64-based systems KB4457143 Sep 11, 2018
Windows RT 8.1 KB4457129 Sep 11, 2018
Windows Server 2008 R2 for Itanium-Based Systems Service Pack 1 KB4457144 Sep 11, 2018
Windows Server 2008 R2 for Itanium-Based Systems Service Pack 1 KB4457145 Sep 11, 2018
Windows Server 2008 R2 for x64-based Systems Service Pack 1 KB4457144 Sep 11, 2018
Windows Server 2008 R2 for x64-based Systems Service Pack 1 KB4457145 Sep 11, 2018
Windows Server 2008 R2 for x64-based Systems Service Pack 1 (Server Core installation) KB4457144 Sep 11, 2018
Windows Server 2008 R2 for x64-based Systems Service Pack 1 (Server Core installation) KB4457145 Sep 11, 2018
Windows Server 2008 for 32-bit Systems Service Pack 2 KB4457984 Sep 11, 2018
Windows Server 2008 for 32-bit Systems Service Pack 2 KB4458010 Sep 11, 2018
Windows Server 2008 for 32-bit Systems Service Pack 2 (Server Core installation) KB4457984 Sep 11, 2018
Windows Server 2008 for 32-bit Systems Service Pack 2 (Server Core installation) KB4458010 Sep 11, 2018
Windows Server 2008 for Itanium-Based Systems Service Pack 2 KB4457984 Sep 11, 2018
Windows Server 2008 for Itanium-Based Systems Service Pack 2 KB4458010 Sep 11, 2018
Windows Server 2008 for x64-based Systems Service Pack 2 KB4457984 Sep 11, 2018
Windows Server 2008 for x64-based Systems Service Pack 2 KB4458010 Sep 11, 2018
Windows Server 2008 for x64-based Systems Service Pack 2 (Server Core installation) KB4457984 Sep 11, 2018
Windows Server 2008 for x64-based Systems Service Pack 2 (Server Core installation) KB4458010 Sep 11, 2018
Windows Server 2012 KB4457135 Sep 11, 2018
Windows Server 2012 KB4457140 Sep 11, 2018
Windows Server 2012 (Server Core installation) KB4457135 Sep 11, 2018
Windows Server 2012 (Server Core installation) KB4457140 Sep 11, 2018
Windows Server 2012 R2 KB4457129 Sep 11, 2018
Windows Server 2012 R2 KB4457143 Sep 11, 2018
Windows Server 2012 R2 (Server Core installation) KB4457129 Sep 11, 2018
Windows Server 2012 R2 (Server Core installation) KB4457143 Sep 11, 2018
Windows Server 2016 14393.2485 KB4457131 Sep 11, 2018
Windows Server 2016 (Server Core installation) 14393.2485 KB4457131 Sep 11, 2018
Windows Server, version 1709 (Server Core Installation) 16299.665 KB4457142 Sep 11, 2018
Windows Server, version 1803 (Server Core Installation) 17134.285 KB4457128 Sep 11, 2018