How severe is CVE-2020-1040?

CVE-2020-1040 has a CVSS 3.1 base score of 9 (CRITICAL). EPSS estimates a 7.4% probability of exploitation in the next 30 days. It is listed in the CISA Known Exploited Vulnerabilities catalog.

CVE-2020-1040: Microsoft Hyper-V RemoteFX vGPU Remote Code Execution

CISA Known Exploited Vulnerabilities

Microsoft Hyper-V RemoteFX vGPU Remote Code Execution Vulnerability is confirmed as actively exploited and is listed in the CISA KEV catalog.

Added to KEV

2021-11-03

Remediation due

2022-05-03

Required action
Apply updates per vendor instructions.

CISA notes
https://nvd.nist.gov/vuln/detail/CVE-2020-1040

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.

Severity

CVSS 3.1 · CISA9 CRITICAL

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

SSVC · CISA-ADP

Exploitationactive

Automatableno

Technical impacttotal

Affected Products

Vendor	Product	Affected versions
Microsoft	Windows Server	2016 2016 (Core installation) 2008 R2 for x64-based Systems Service Pack 1 2008 R2 for x64-based Systems Service Pack 1 (Core installation) 2012 2012 (Core installation) 2012 R2 2012 R2 (Core installation)

References

2 Links

Other references

Record Details

Published

2020-07-14

Last updated

2025-10-21

Assigner (CNA)

microsoft

Credited to

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CVE record data © The MITRE Corporation, used under the CVE Terms of Use. Exploited-in-the-wild data from the CISA Known Exploited Vulnerabilities catalog (CC0). Exploit prediction scores by FIRST EPSS (first.org/epss). This site is not endorsed or certified by MITRE, NVD, CISA, or FIRST.