CVE-2020-1040 Microsoft Hyper-V RemoteFX vGPU Remote Code Execution
An authenticated guest user can trigger remote code execution on the Hyper-V host via improper input validation in RemoteFX vGPU.
- Exploited in the wild
- Since 3 Nov 2021
- Login needed
- Any signed-in user
- Attackable
- Local or same network only
- Victim action needed
- Not needed
- Fix
- None listed
What is CVE-2020-1040?
CVE-2020-1040 is a critical memory corruption vulnerability in Microsoft Windows Server 2008, published on 14 Jul 2020. It can only be exploited from the same machine or local network, with no action from the victim.
Official description
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.
Weakness: CWE-20
Which versions are affected by CVE-2020-1040?
It affects 3 products.
Products include Microsoft Windows Server 2008, Microsoft Windows Server 2012, Microsoft Windows Server 2016.
How do I fix CVE-2020-1040?
No fix has been published for CVE-2020-1040 yet. Limit exposure of the affected software until one is available. US federal agencies must fix it by 3 May 2022.
Upgrade to the fixed version. Memory-safe languages, compiler hardening and fuzzing prevent most new cases. More about Memory corruption.
Is CVE-2020-1040 being exploited?
Yes. Attackers have exploited CVE-2020-1040 in the wild since at least 3 Nov 2021.
Other vulnerabilities in Microsoft Windows Server 2008
Sources
Also known as GHSA-98qh-xxww-5r96.