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.
An attacker who successfully exploited the vulnerability could execute arbitrary code on the host operating system.
The security update addresses the vulnerability by correcting how Hyper-V validates guest operating system user input.

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.
An attacker who successfully exploited the vulnerability could execute arbitrary code on the host operating system.
The security update addresses the vulnerability by correcting how Hyper-V validates guest operating system user input.

https://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2019-0965

CISA-ADP CWE-20

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, aka 'Windows Hyper-V Remote Code Execution Vulnerability'.

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.
An attacker who successfully exploited the vulnerability could execute arbitrary code on the host operating system.
The security update addresses the vulnerability by correcting how Hyper-V validates guest operating system user input.

Microsoft Corporation AV:A/AC:H/PR:H/UI:N/S:C/C:H/I:H/A:H

NIST AV:A/AC:L/PR:H/UI:N/S:C/C:H/I:H/A:H

AV:A/AC:L/PR:H/UI:N/S:C/C:H/I:H/A:H

(AV:A/AC:L/Au:S/C:C/I:C/A:C)

CWE-20

OR
     *cpe:2.3:o:microsoft:windows_10:1709:*:*:*:*:*:x64:*
     *cpe:2.3:o:microsoft:windows_10:1803:*:*:*:*:*:x64:*
     *cpe:2.3:o:microsoft:windows_10:1809:*:*:*:*:*:x64:*
     *cpe:2.3:o:microsoft:windows_10:1903:*:*:*:*:*:x64:*
     *cpe:2.3:o:microsoft:windows_server_2016:1803:*:*:*:*:*:*:*
     *cpe:2.3:o:microsoft:windows_server_2016:1903:*:*:*:*:*:*:*
     *cpe:2.3:o:microsoft:windows_server_2019:-:*:*:*:*:*:*:*

https://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2019-0965 No Types Assigned

https://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2019-0965 Patch, Vendor Advisory