Microsoft Hyper-V RemoteFX vGPU Remote Code Execution Vulnerability

2021-11-0300:00:00

CISA

www.cisa.gov

microsoft hyper-v

remotefx vgpu

input validation

remote code execution

vulnerability

host server

guest operating system

authenticated user

CVSS2

7.7

Attack Vector

ADJACENT_NETWORK

Attack Complexity

LOW

Authentication

SINGLE

Confidentiality Impact

COMPLETE

Integrity Impact

COMPLETE

Availability Impact

COMPLETE

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

CVSS3

Attack Vector

ADJACENT

Attack Complexity

LOW

Privileges Required

LOW

User Interaction

NONE

Scope

CHANGED

Confidentiality Impact

HIGH

Integrity Impact

HIGH

Availability Impact

HIGH

CVSS:3.1/AV:A/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H

EPSS

0.004

Percentile

72.4%

JSON

Microsoft Hyper-V RemoteFX vGPU contains an improper input validation vulnerability due to the host server failing to properly validate input from an authenticated user on a guest operating system. Successful exploitation allows for remote code execution on the host operating system.