Reference page — cumulative record through Wednesday, October 7, 2026 UTC. Reference pages update as the archive grows; only dated daily editions are immutable pages of record.

CVE-2020-1040

CVE-2020-1040CRITICAL

Microsoft Hyper-V RemoteFX

  AV  AC  PR  UI  S  C  I  A   CVSS    EPSS   %ile   KEV
   A   L   L   N  C  H  H  H    9.0   .0739   94.3   YES

AFFECTED
  Product         Versions  Fixed
  Windows Server  2016 –    —

TIMELINE
  Nov 4   Reserved by microsoft
  Jul 14  Published (CNA: microsoft)
  Nov 3   Added to CISA KEV, remediation due 2022-05-03

CWE-20 · CNA: microsoft · CVSS v3.1 · 3 references · KEV due May 3, 2022

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.

Lifecycle

Complete event history — 3 events, chronological
Date	Event	Detail
November 4, 2019	Reserved	Reserved by microsoft
July 14, 2020	Published	Published (CNA: microsoft)
November 3, 2021	KEV ADDED	Added to CISA KEV, remediation due 2022-05-03

Affected

Affected products and packages — 1 row
Vendor	Product / Package	Ecosystem	Version introduced	Fixed
Microsoft	Windows Server	—	2016	—

Weaknesses

CWE-20

References (3)

https://nvidia.custhelp.com/app/answers/detail/a_id/5044 [x_refsource_CONFIRM]
https://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2020-1040 [x_refsource_MISC]
https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2020-1040 [government-resource]

Authoritative record: CVE-2020-1040 at cve.org

Vendors: microsoft

Weaknesses: CWE-20

About this page

This is a reference page, not a dated page of record. It assembles the complete lifecycle of CVE-2020-1040 from the CVE Program record, NVD enrichment, the CISA KEV catalog, EPSS, and OSV advisories. The box score's numbers (CVSS, EPSS, KEV status) are current as of Wednesday, October 7, 2026 UTC and are re-derived as the archive grows; only dated daily editions are immutable pages of record. The authoritative source for this identifier is cve.org.