Hyper-V RemoteFX vGPU Remote Code Execution Vulnerability
Actively exploited in the wild. Patch or mitigate immediately — don't wait for a maintenance window.
An attacker with a basic user account, from the same local network, with no user interaction, can fully compromise the system — steal data, tamper with it and take it offline.
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.
Inferred from the weakness type (CWE) and how the flaw is reached — the techniques an attacker would chain to exploit this. Real-world corroboration appears here as threat intel is folded in.
Corroborated threat activity referencing this CVE — with source and confidence, not inference.
Named threat actors and observed ATT&CK techniques appear here as intel feeds are folded in — the ATT&CK chain above stays inferred until then.
Generated by Wavense from the CVE record — an immediate mitigation and the permanent fix.
As an interim measure, disable or remove the RemoteFX vGPU feature from all Hyper-V guest virtual machines where it is not absolutely essential. Implement strict network segmentation to limit communication between guest VMs and the Hyper-V host management interfaces. Enhance monitoring on Hyper-V hosts for anomalous process execution or unexpected network connections originating from guest VMs.
The permanent resolution requires applying the security updates released by Microsoft that specifically address CVE-2020-1040. Ensure all Hyper-V host servers and their associated components are updated to the latest patched versions. Refer to the official Microsoft security advisory for the correct patches applicable to your specific Hyper-V server versions and configurations.
An authenticated attacker on a guest operating system can exploit this vulnerability to execute arbitrary code on the Hyper-V host server. This allows for a complete escape from the virtual machine, potentially compromising all other guest VMs and critical host functions. Successful exploitation can lead to full system compromise, data theft, and denial of service across the entire virtualized environment.
Other CVEs affecting windows server 2008
A remote code execution vulnerability exists in Windows Domain Name System servers when they fail to properly handle requests, aka 'Windows DNS Server Remote Code Execution Vulnerability'.
Double free in Windows IKE Extension allows an unauthorized attacker to execute code over a network.
Deserialization of untrusted data in Windows Server Update Service allows an unauthorized attacker to execute code over a network.
A remote code execution vulnerability exists in Remote Desktop Services formerly known as Terminal Services when an unauthenticated attacker connects to the target system using RDP and sends specially crafted requests, aka 'Remote Desktop Services Remote Code Execution Vulnerability'.
Microsoft Windows XP SP3, Windows XP x64 XP2, Windows Server 2003 SP2, Windows Vista, Windows 7 SP1, Windows Server 2008 SP2 and R2 SP1, Windows 8, Windows 8.1 and Windows RT 8.1, Windows Server 2012 and R2, Windows 10 Gold, 1511, 1607, and 1703, and Windows Server 2016 allow an attacker to take control of the affected system when Windows Search fails to handle objects in memory, aka "Windows Search Remote Code Execution Vulnerability".
HTTP.sys in Microsoft Windows 7 SP1, Windows Server 2008 R2 SP1, Windows 8, Windows 8.1, and Windows Server 2012 Gold and R2 allows remote attackers to execute arbitrary code via crafted HTTP requests, aka "HTTP.sys Remote Code Execution Vulnerability."
The Server service in Microsoft Windows 2000 SP4, XP SP2 and SP3, Server 2003 SP1 and SP2, Vista Gold and SP1, Server 2008, and 7 Pre-Beta allows remote attackers to execute arbitrary code via a crafted RPC request that triggers the overflow during path canonicalization, as exploited in the wild by Gimmiv.A in October 2008, aka "Server Service Vulnerability."