Microsoft Hyper-V RemoteFX vGPU Remote Code Execution Vulnerability

Are you affected?

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• cpe microsoft/windows server 2008r2
• cpe microsoft/windows server 2012r2
• cpe microsoft/windows server 2016version unspecified
• vendor Microsoft Hyper-V RemoteFXversion unspecified

How to fix CVE-2020-1040

• Recommended remediation

  Apply updates per vendor instructions. CISA due date May 3, 2022.

• Official advisories

  • CISA KEV · cisa.gov
  • CVE.org · cve.org
  • FIRST EPSS · first.org
  • NIST NVD · nvd.nist.gov
  • VulnCheck KEV · vulncheck.com

What to do

Three questions, each answered from this record only. Confirm the vendor advisory before you patch.

Technology hubs

Code

The project this record applies to. Exploit listings stay in References.

No public source repository is identified for this product.

Timeline

Detection, updates, and resolution for this record.

1. Jul 14, 2020 · Catalog

   Detected

   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.

2. Nov 3, 2021 · CISA KEV

   Known exploited

   Apply updates per vendor instructions.

3. May 3, 2022 · CISA KEV

   Remediation due

   Apply updates per vendor instructions.

4. Jun 16, 2026 · Catalog

   Updated

   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.

Sources

• CISA KEVConfirmed exploitationCVE-2020-1040

  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.

  cisa.gov
• CVE.orgVulnerability recordCVE-2020-1040

  Official CVE identifier

  cve.org
• FIRST EPSSExploitation probabilityCVE-2020-1040

  30-day exploitation probability 7.4%

  first.org
• NIST NVDVulnerability recordCVE-2020-1040

  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-2020-1

  nvd.nist.gov
• VulnCheck KEVConfirmed exploitationCVE-2020-1040

  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 sys

  vulncheck.com

References

• VulnCheck exploitation evidence · cisa.gov
• CISA note · nvd.nist.gov
• Third Party Advisory · nvidia.custhelp.com
• Patch · portal.msrc.microsoft.com
• VulnCheck exploitation evidence · us-cert.cisa.gov
• US Government Resource · cisa.gov
• VulnCheck exploitation evidence · cisa.gov

Freshness

Last verified in this catalog Oct 17, 2026. Significant claims (KEV, EPSS, CVSS, affected ranges) come from the source rows above — open the original publisher for the authoritative advisory.