CVE-2019-0718
Windows Hyper-V Denial of Service Vulnerability
At a glance
- Severity
- MEDIUM 5.8
- EPSS
- EPSS 5.00 % · percentile 92 (2026-10-27)
- State
- PUBLISHED
- Published
- Updated
- Assigner
- microsoft
- NVD status
- Modified
Description
A denial of service vulnerability exists when Microsoft Hyper-V Network Switch on a host server fails to properly validate input from a privileged user on a guest operating system. An attacker who successfully exploited the vulnerability could cause the host server to crash. To exploit the vulnerability, an attacker who already has a privileged account on a guest operating system, running as a virtual machine, could run a specially crafted application that causes a host machine to crash. The update addresses the vulnerability by modifying how virtual machines access the Hyper-V Network Switch.
Scores
| Version | Score | Vector | Scored by |
|---|---|---|---|
| CVSS 3.1 | MEDIUM 5.8 | CVSS:3.1/AV:N/AC:H/PR:H/UI:N/S:C/C:N/I:N/A:H/E:P/RL:O/RC:C | microsoft |
| CVSS 3.1 | MEDIUM 5.8 | CVSS:3.1/AV:N/AC:H/PR:H/UI:N/S:C/C:N/I:N/A:H | NVD · secure@microsoft.com (Secondary) |
| CVSS 2.0 | MEDIUM 5.5 | AV:A/AC:L/Au:S/C:N/I:N/A:C | NVD · nvd@nist.gov (Primary) |
Weaknesses (CWE)
European references
- ENISA EUVD · EUVD-2019-1478
- GCVE · GCVE-0-2019-0718
CERT-FR advisories
- CERTFR-2019-AVI-397 — Multiples vulnérabilités dans Microsoft Windows · cert.ssi.gouv.fr
Affected configurations (NVD CPE)
cpe:2.3:o:microsoft:windows_10:-:*:*:*:*:*:x64:*cpe:2.3:o:microsoft:windows_10:1607:*:*:*:*:*:x64:*cpe:2.3:o:microsoft:windows_10:1703:*:*:*:*:*:x64:*cpe:2.3:o:microsoft:windows_10:1709:*:*:*:*:*:x64:*cpe:2.3:o:microsoft:windows_10:1803:*:*:*:*:*:x64:*cpe:2.3:o:microsoft:windows_10:1809:*:*:*:*:*:x64:*cpe:2.3:o:microsoft:windows_10:1903:*:*:*:*:*:x64:*cpe:2.3:o:microsoft:windows_8.1:-:*:*:*:*:*:x64:*cpe:2.3:o:microsoft:windows_rt_8.1:-:*:*:*:*:*:*:*cpe:2.3:o:microsoft:windows_server_2012:-:*:*:*:*:*:*:*cpe:2.3:o:microsoft:windows_server_2012:r2:*:*:*:*:*:*:*cpe:2.3:o:microsoft:windows_server_2016:-:*:*:*:*:*:*:*cpe:2.3:o:microsoft:windows_server_2016:1803:*:*:*:*:*:*:*cpe:2.3:o:microsoft:windows_server_2016:1903:*:*:*:*:*:*:*cpe:2.3:o:microsoft:windows_server_2019:-:*:*:*:*:*:*:*
Affected products
References
Sources
| Source | Licence |
|---|---|
| CVE List (CVEProject cvelistV5) | CVE Program Terms of Use |
| EPSS (FIRST.org) | FIRST — attribution requested |
| ENISA EUVD | ENISA — reproduction authorised, source acknowledged |
| CERT-FR (ANSSI) | Licence Ouverte / Etalab 2.0 |
| NVD (NIST) via fkie-cad/nvd-json-data-feeds | Public domain — this product uses data from the NVD API but is not endorsed or certified by the NVD |