01 Record
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
CriticalKEVPUBLISHEDCNA: microsoft
CNA base score9.0 CVSS v3.xCVSS:3.1/AV:A/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H
02 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
03 Exploitation and scoring
- Exploitation
- Exploited in the wild. Listed in the CISA Known Exploited Vulnerabilities catalog on 2021-11-03. Federal remediation due 2022-05-03.
- SSVC decision
- ExploitationactiveCISA reports credible evidence of active exploitation.
- AutomatablenoAt least one step from reconnaissance to exploitation cannot be reliably automated.
- Technical ImpacttotalSuccessful exploitation gives total control of the vulnerable component.
- EPSS probability
- 7.39% probability of exploitation activity in the next 30 days.
- EPSS percentile
- Equal to or higher than the score of 94.2% of scored records. A rank, not a probability.
- NVD base score
- 9.0 (CVSS v3.x), scored by the NVD independently of the CNA.
- NVD CVSS vector
- CVSS:3.1/AV:A/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H
- NVD analysis status
- Analyzed. NVD last modified this record on 2026-06-17.
- Red Hat severity
- No Red Hat rating. Red Hat rates the CVEs that affect its products.
Exploit-prediction scores from FIRST. Independent scoring and analysis status from the NVD. Vendor severity from Red Hat. Exploitation assessment and catalog membership from CISA.
04 Metadata
- Published
- 2020-07-14 22:53Z6 YR AGO
- Last updated
- 2025-10-21 23:35Z1 YR AGO
- Reserved
- 2019-11-04
- Assigning CNA
- microsoft
- Record state
- PUBLISHED
- Severity
- Critical (CVSS 9.0)
- CNA CVSS vector
- CVSS:3.1/AV:A/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H
- Weaknesses
- CWE-20Improper Input ValidationClass
- Data version
- 5.1
- Document digest
- caef60133fdaf20920d0e165257ad8987e2c81d8881a745cc3b6ebbc4642a706
05 Affected products
VendorProductVersionsPlatforms
MicrosoftWindows Server2016, 2016 (Core installation), 2008 R2 for x64-based Systems Service Pack 1, 2008 R2 for x64-based Systems Service Pack 1 (Core installation), 2012, 2012 (Core installation), 2012 R2, 2012 R2 (Core installation)—
06 References
- portal.msrc.microsoft.comhttps://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2020-1040
- nvidia.custhelp.comhttps://nvidia.custhelp.com/app/answers/detail/a_id/5044
- www.cisa.govhttps://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2020-1040