CVE-2019-0550

Windows Hyper-V Remote Code Execution Vulnerability

CVE-2019-0550 is fixed in 9 products on 1 platform, first by KB4480966, released January 8, 2019. 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
0.0446
91st 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 1803 for 32-bit Systems 17134.523 KB4480966 Jan 8, 2019
Windows 10 Version 1803 for ARM64-based Systems 17134.523 KB4480966 Jan 8, 2019
Windows 10 Version 1803 for x64-based Systems 17134.523 KB4480966 Jan 8, 2019
Windows 10 Version 1809 for 32-bit Systems 17763.253 KB4480116 Jan 8, 2019
Windows 10 Version 1809 for ARM64-based Systems 17763.253 KB4480116 Jan 8, 2019
Windows 10 Version 1809 for x64-based Systems 17763.253 KB4480116 Jan 8, 2019
Windows Server 2019 17763.253 KB4480116 Jan 8, 2019
Windows Server 2019 (Server Core installation) 17763.253 KB4480116 Jan 8, 2019
Windows Server, version 1803 (Server Core Installation) 17134.523 KB4480966 Jan 8, 2019

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