CVE-2018-8339

Windows Installer Elevation of Privilege Vulnerability

CVE-2018-8339 is fixed in 31 products on 1 platform, first by KB4343887, released August 14, 2018. It is not reported as exploited. Patch Radar priority: High.

High
CVSS
7.4
Important
Exploitation
None reported
Exploitation Less Likely
CISA KEV
Not listed
Not in the Known Exploited Vulnerabilities catalog
EPSS
0.0116
67th percentile

<p>An elevation of privilege vulnerability exists in the Windows Installer when the Windows Installer fails to properly sanitize input leading to an insecure library loading behavior.</p> <p>A locally authenticated attacker could run arbitrary code with elevated system privileges. An attacker could then install programs; view, change, or delete data; or create new accounts with full user rights.</p> <p>The security update addresses the vulnerability by correcting the input sanitization error to preclude unintended elevation.</p>

Where it's fixed

ProductFixed inFixReleased
Microsoft
Windows 10 Version 1607 for 32-bit Systems 14393.2430 KB4343887 Aug 14, 2018
Windows 10 Version 1607 for x64-based Systems 14393.2430 KB4343887 Aug 14, 2018
Windows 10 Version 1703 for 32-bit Systems 15063.1266 KB4343885 Aug 14, 2018
Windows 10 Version 1703 for x64-based Systems 15063.1266 KB4343885 Aug 14, 2018
Windows 10 Version 1709 for 32-bit Systems 16299.611 KB4343897 Aug 14, 2018
Windows 10 Version 1709 for x64-based Systems 16299.611 KB4343897 Aug 14, 2018
Windows 10 Version 1803 for 32-bit Systems 17134.228 KB4343909 Aug 14, 2018
Windows 10 Version 1803 for x64-based Systems 17134.228 KB4343909 Aug 14, 2018
Windows 10 for 32-bit Systems 10240.17946 KB4343892 Aug 14, 2018
Windows 10 for x64-based Systems 10240.17946 KB4343892 Aug 14, 2018
Windows 7 for 32-bit Systems Service Pack 1 KB4343899 Aug 14, 2018
Windows 7 for 32-bit Systems Service Pack 1 KB4343900 Aug 14, 2018
Windows 7 for x64-based Systems Service Pack 1 KB4343899 Aug 14, 2018
Windows 7 for x64-based Systems Service Pack 1 KB4343900 Aug 14, 2018
Windows 8.1 for 32-bit systems KB4343888 Aug 14, 2018
Windows 8.1 for 32-bit systems KB4343898 Aug 14, 2018
Windows 8.1 for x64-based systems KB4343888 Aug 14, 2018
Windows 8.1 for x64-based systems KB4343898 Aug 14, 2018
Windows RT 8.1 KB4343898 Aug 14, 2018
Windows Server 2008 R2 for Itanium-Based Systems Service Pack 1 KB4343899 Aug 14, 2018
Windows Server 2008 R2 for Itanium-Based Systems Service Pack 1 KB4343900 Aug 14, 2018
Windows Server 2008 R2 for x64-based Systems Service Pack 1 KB4343899 Aug 14, 2018
Windows Server 2008 R2 for x64-based Systems Service Pack 1 KB4343900 Aug 14, 2018
Windows Server 2008 R2 for x64-based Systems Service Pack 1 (Server Core installation) KB4343899 Aug 14, 2018
Windows Server 2008 R2 for x64-based Systems Service Pack 1 (Server Core installation) KB4343900 Aug 14, 2018
Windows Server 2008 for 32-bit Systems Service Pack 2 KB4340937 Aug 14, 2018
Windows Server 2008 for 32-bit Systems Service Pack 2 (Server Core installation) KB4340937 Aug 14, 2018
Windows Server 2008 for Itanium-Based Systems Service Pack 2 KB4340937 Aug 14, 2018
Windows Server 2008 for x64-based Systems Service Pack 2 KB4340937 Aug 14, 2018
Windows Server 2008 for x64-based Systems Service Pack 2 (Server Core installation) KB4340937 Aug 14, 2018
Windows Server 2012 KB4343896 Aug 14, 2018
Windows Server 2012 KB4343901 Aug 14, 2018
Windows Server 2012 (Server Core installation) KB4343896 Aug 14, 2018
Windows Server 2012 (Server Core installation) KB4343901 Aug 14, 2018
Windows Server 2012 R2 KB4343888 Aug 14, 2018
Windows Server 2012 R2 KB4343898 Aug 14, 2018
Windows Server 2012 R2 (Server Core installation) KB4343888 Aug 14, 2018
Windows Server 2012 R2 (Server Core installation) KB4343898 Aug 14, 2018
Windows Server 2016 14393.2430 KB4343887 Aug 14, 2018
Windows Server 2016 (Server Core installation) 14393.2430 KB4343887 Aug 14, 2018
Windows Server, version 1709 (Server Core Installation) 16299.611 KB4343897 Aug 14, 2018
Windows Server, version 1803 (Server Core Installation) 17134.228 KB4343909 Aug 14, 2018