CVE-2019-1230

Hyper-V Information Disclosure Vulnerability

CVE-2019-1230 is fixed in 7 products on 1 platform, first by KB4520010, released October 8, 2019. It is not reported as exploited. Patch Radar priority: Routine.

Routine
CVSS
6.8
Important
Exploitation
None reported
Exploitation Less Likely
CISA KEV
Not listed
Not in the Known Exploited Vulnerabilities catalog
EPSS
0.0580
93rd percentile

<p>An information disclosure vulnerability exists when the Windows Hyper-V Network Switch on a host operating system fails to properly validate input from an authenticated user on a guest operating system. To exploit the vulnerability, an attacker on a guest operating system could run a specially crafted application that could cause the Hyper-V host operating system to disclose memory information.</p> <p>An attacker who successfully exploited the vulnerability could gain access to information on the Hyper-V host operating system.</p> <p>The security update addresses the vulnerability by correcting how the Windows Hyper-V Network Switch validates guest operating system user input.</p>

Where it's fixed

ProductFixed inFixReleased
Microsoft
Windows 10 Version 1703 for x64-based Systems 15063.2108 KB4520010 Oct 8, 2019
Windows 10 Version 1709 for x64-based Systems 16299.1451 KB4520004 Oct 8, 2019
Windows 10 Version 1803 for x64-based Systems 17134.1069 KB4520008 Oct 8, 2019
Windows 10 Version 1809 for x64-based Systems 17763.805 KB4519338 Oct 8, 2019
Windows Server 2019 17763.805 KB4519338 Oct 8, 2019
Windows Server 2019 (Server Core installation) 17763.805 KB4519338 Oct 8, 2019
Windows Server, version 1803 (Server Core Installation) 17134.1069 KB4520008 Oct 8, 2019

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