CVEs / CVE-2020-1040
CVE-2020-1040: Microsoft Hyper-V RemoteFX vGPU Remote Code Execution Vulnerability
- Known exploited in the CISA KEV catalog since 3 Nov 2021
- critical 9 CVSS 3.1 (NVD)
- EPSS 7.39% chance of exploitation in the next 30 days, higher than 94% of CVEs (30 Oct 2026)
- Last changed at its sources
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Summary
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.
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.
Affected and fixed versions
| Product | Affected | Fixed in |
|---|---|---|
| Microsoft Windows Server | 2016 | — |
| Microsoft Windows Server | 2016 (Core installation) | — |
| Microsoft Windows Server | 2008 R2 for x64-based Systems Service Pack 1 | — |
| Microsoft Windows Server | 2008 R2 for x64-based Systems Service Pack 1 (Core installation) | — |
| Microsoft Windows Server | 2012 | — |
| Microsoft Windows Server | 2012 (Core installation) | — |
| Microsoft Windows Server | 2012 R2 | — |
| Microsoft Windows Server | 2012 R2 (Core installation) | — |
Exploitation
| In CISA KEV since | 3 Nov 2021 |
|---|---|
| Due date for US federal agencies | 3 May 2022 |
| Used in ransomware campaigns | Unknown |
| Required action | Apply updates per vendor instructions. |
Severity
| CVSS 3.1 | 9 criticalCVSS:3.1/AV:A/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:HScored by NVD |
|---|---|
| Weakness | CWE-20 |
References
- CVE-2020-1040 on NVD
- CVE-2020-1040 in the CISA KEV catalog
- https://nvidia.custhelp.com/app/answers/detail/a_id/5044 Third Party Advisory
- https://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2020-1040 Patch, Vendor Advisory
- https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2020-1040 US Government Resource
Sources
Exploitation status from the CISA Known Exploited Vulnerabilities catalog. EPSS scores from FIRST. Descriptions, severity and references from the National Vulnerability Database. Open-source package versions from OSV (CC-BY 4.0). Text is shown as each source states it; Stackurity does not edit it. Check the vendor's advisory before acting.
This product uses data from the NVD API but is not endorsed or certified by the NVD.