CRITICALCVSS v3.1 9.0Actively exploited · CISA KEV since 2021-11-03Vulnerability

CVE-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.

Properties

Euvd product
Windows Server
Vulnerability name
Microsoft Hyper-V RemoteFX vGPU Remote Code Execution Vulnerability
First seen
2025-10-21T23:35:39+00:00
Cvss score
9
Epss score
0.07393
Last seen
2026-10-19T12:00:27+00:00
Due date
2022-05-03
Euvd assigner
microsoft
Retrieved at
2026-10-21T01:24:47+00:00
Exploited euvd since
2021-11-03T00:00:00+00:00
Src batch id
epss_history-20261020T103617Z-728ddd
Source url
https://epss.empiricalsecurity.com/epss_scores-2026-10-19.csv.gz
Date added
2021-11-03
Score
9
Euvd base score version
3.1
Fetched at
2026-10-20T10:36:20+00:00
Euvd vendor
Microsoft
Cvss vector
CVSS:3.1/AV:A/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H
In Signal since
initial import (Sep 2026)
Euvd base score
9

Related Entities (7)

AFFECTS_PRODUCT (4)

→[Product]cpe:2.3:o:microsoft:windows_server_2012:-:*:*:*:*:*:*:*
→[Product]cpe:2.3:o:microsoft:windows_server_2008:r2:*:*:*:*:*:x64:*
→[Product]cpe:2.3:o:microsoft:windows_server_2012:r2:*:*:*:*:*:*:*
→[Product]cpe:2.3:o:microsoft:windows_server_2016:-:*:*:*:*:*:*:*

DESCRIBES (1)

←[KEVEntry]Microsoft Hyper-V RemoteFX vGPU Remote Code Execution Vulnerability

HAS_WEAKNESS (1)

→[Weakness]Improper Input Validation

INVOLVES (1)

←[Signal]kev_added · 2021-11-03

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CVE-2020-1040 (CVSS v3.1 9) — Ninja Signal Threat Intelligence | Ninja Signal