Improper input validation in Microsoft Windows Server
CVE-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 Vulnerabilit…
Vulnerability class: Drupalgeddon 2 (CVE-2018-7600)
EPSS: 0.069 (93.4th percentile) — read the EPSS interpretation.
CVSS v3 metric
CVSS v3 base score 9.0 (Critical). Vector: CVSS:3.1/AV:A/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H.
Affected products
- Microsoft Windows Server — versions 2016, 2016 (Core installation), 2008 R2 for x64-based Systems Service Pack 1
- Microsoft Windows_server_2008 — versions r2
- Microsoft Windows_server_2012 — versions r2
- Microsoft Windows_server_2016
Weakness classification (CWE)
CISA KEV (Known Exploited Vulnerabilities)
This CVE is on the CISA KEV catalog, added on . CISA KEV inclusion means CISA has confirmed in-the-wild exploitation; US federal agencies are required to remediate within a published due date.
BOD 22-01 due date: .
Required action: Apply updates per vendor instructions.
Public proof-of-concept exploits
References
- secure@microsoft.com (Patch, x_refsource_MISC, Vendor Advisory)
- secure@microsoft.com (x_refsource_CONFIRM, Third Party Advisory)
- 134c704f-9b21-4f2e-91b3-4a467353bcc0 (US Government Resource)
Frequently asked questions
- What is CVE-2020-1040?
- CVE-2020-1040 is a critical-severity vulnerability in Microsoft Windows Server, classified under Improper Input Validation. CVSS score: 9.0/10. Published 2020-07-14.
- How severe is CVE-2020-1040?
- Critical severity. CVSS v3 base score is 9.0 out of 10.
- Is CVE-2020-1040 known to be exploited?
- Yes. CVE-2020-1040 is listed in the CISA Known Exploited Vulnerabilities catalog (added 2021-11-03), indicating it is being actively exploited. 2 public proof-of-concept repositories are indexed.