CVE-2017-8591

Windows IME Remote Code Execution Vulnerability

CVE-2017-8591 is fixed in 17 products on 1 platform, first by KB4034660, released August 8, 2017. It is not reported as exploited. Patch Radar priority: Urgent.

Urgent
CVSS
8.8
Critical
Exploitation
None reported
Exploitation Less Likely
CISA KEV
Not listed
Not in the Known Exploited Vulnerabilities catalog
EPSS
0.0397
90th percentile

<p>A remote code execution vulnerability exists in Windows Input Method Editor (IME) when IME improperly handles parameters in a method of a DCOM class.</p> <p>The DCOM server is a Windows component installed regardless of which languages/IMEs are enabled. An attacker can instantiate the DCOM class and exploit the system even if IME is not enabled.</p> <p>To exploit this vulnerability, a locally authenticated attacker could run a specially crafted application.</p> <p>The security update addresses this vulnerability by correcting how Windows IME handles parameters in a method of a DCOM class.</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 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 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