Is CVE-2020-1040 actively exploited?

CVE-2020-1040 has no public evidence of in-the-wild exploitation as of 2025-10-29.

What is the CVSS score for CVE-2020-1040?

CVE-2020-1040 has a CVSS score of 9 (CRITICAL severity). Vector: CVSS:3.1/AV:A/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H.

How do I patch CVE-2020-1040?

Patch guidance is available from microsoft security advisories. CVEDatabase generates AI-assisted remediation guidance on demand for CVE-2020-1040.

Fix CVE-2020-1040 - CRITICAL microsoft windows server 2008

Q: Which products are affected by CVE-2020-1040?

4 products: microsoft windows server 2008, microsoft windows server 2012, microsoft windows server 2012, microsoft windows server 2016.

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.

CVSS Metrics

Vector: CVSS:3.1/AV:A/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H
Attack Vector: adjacent network
Complexity: low
Privileges: low
User Action: none
Scope: changed
Confidentiality: high
Integrity: high
Availability: high
Weaknesses: CWE-20 · Improper Input Validation CWE-20 · Improper Input Validation

Metadata

Primary Vendor: MICROSOFT
Published: 7/14/2020
Last Modified: 10/29/2025
Source: NIST NVD
Note: Verify all details with official vendor sources before applying patches.

Affected Products

microsoft : windows_server_2008microsoft : windows_server_2012microsoft : windows_server_2012microsoft : windows_server_2016

Remediation Guidance

Executive Summary

View on NIST NVD