Actively exploited in the wild
Microsoft Hyper-V RemoteFX vGPU Remote Code Execution Vulnerability
Microsoft - Hyper-V RemoteFX · Listed in the CISA KEV since 2021-11-03. This indicates confirmed attacks in production environments.
Required action: Apply updates per vendor instructions.
CVE-2020-1040
CriticalCVSS 9.0KEVSummary
A remote code execution vulnerability exists when Hyper-V RemoteFX vGPU on a host server fails to properly validate input from an authenticated user on a guest operating system, aka 'Hyper-V RemoteFX vGPU Remote Code Execution Vulnerability'.
Risk Assessment
An authenticated user on a guest OS can execute arbitrary code on the host server, leading to takeover of the host and other virtual machines.
Recommendation
Apply Microsoft security updates for Hyper-V RemoteFX vGPU or disable the RemoteFX vGPU feature if not required.
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Original NVD description (English source)
A remote code execution vulnerability exists when Hyper-V RemoteFX vGPU on a host server fails to properly validate input from an authenticated user on a guest operating system, aka 'Hyper-V RemoteFX vGPU Remote Code Execution Vulnerability'. This CVE ID is unique from CVE-2020-1032, CVE-2020-1036, CVE-2020-1041, CVE-2020-1042, CVE-2020-1043.