CVE-2018-8490

Windows Hyper-V Remote Code Execution Vulnerability

CVE-2018-8490 is fixed in 12 products on 1 platform, first by KB4462917, released October 9, 2018. It is not reported as exploited. Patch Radar priority: Urgent.

Urgent
CVSS
7.6
Critical
Exploitation
None reported
Exploitation Less Likely
CISA KEV
Not listed
Not in the Known Exploited Vulnerabilities catalog
EPSS
0.0413
90th percentile

<p>A remote code execution vulnerability exists when Windows Hyper-V on a host server fails to properly validate input from an authenticated user on a guest operating system. To exploit the vulnerability, an attacker could run a specially crafted application on a guest operating system that could cause the Hyper-V host operating system to execute arbitrary code.</p> <p>An attacker who successfully exploited the vulnerability could execute arbitrary code on the host operating system.</p> <p>The security update addresses the vulnerability by correcting how Hyper-V validates guest operating system user input.</p>

Where it's fixed

ProductFixed inFixReleased
Microsoft
Windows 10 Version 1607 for x64-based Systems 14393.2551 KB4462917 Oct 9, 2018
Windows 10 Version 1703 for x64-based Systems 15063.1387 KB4462937 Oct 9, 2018
Windows 10 Version 1709 for x64-based Systems 16299.726 KB4462918 Oct 9, 2018
Windows 10 Version 1803 for x64-based Systems 17134.345 KB4462919 Oct 9, 2018
Windows 10 Version 1809 for x64-based Systems 17763.55 KB4464330 Oct 9, 2018
Windows 10 for x64-based Systems 10240.18005 KB4462922 Oct 9, 2018
Windows Server 2016 14393.2551 KB4462917 Oct 9, 2018
Windows Server 2016 (Server Core installation) 14393.2551 KB4462917 Oct 9, 2018
Windows Server 2019 17763.55 KB4464330 Oct 9, 2018
Windows Server 2019 (Server Core installation) 17763.55 KB4464330 Oct 9, 2018
Windows Server, version 1709 (Server Core Installation) 16299.726 KB4462918 Oct 9, 2018
Windows Server, version 1803 (Server Core Installation) 17134.345 KB4462919 Oct 9, 2018