CVE-2019-0718
Windows Hyper-V Denial of Service Vulnerability
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.
Attack profile
How easy it is to exploit
- Attack vector
- Network
- Complexity
- High
- Privileges needed
- High
- User interaction
- None
What an attacker can affect
- Confidentiality
- None
- Integrity
- None
- Availability
- High
Exploit likelihood
What each source reports
CVE List Score used
5.8
Windows Hyper-V Denial of Service Vulnerability
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.
- Record
CVE-2019-0718- CVSS 3.1
- 5.8 Medium
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 - Updated
- 2026-11-02
EUVDEUVD-2019-1478
5.8
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.
- Record
EUVD-2019-1478- CVSS 3.1
- 5.8 Medium
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 - Updated
- 2026-11-03
GitHub AdvisoriesGHSA-53v3-5x5v-xq33
6.2
A denial of service vulnerability exists when Microsoft Hyper-V Network Switch on a host server...
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, aka 'Windows Hyper-V Denial of Service Vulnerability'. This CVE ID is unique from CVE-2019-0714, CVE-2019-0715, CVE-2019-0717, CVE-2019-0723.
- Record
GHSA-53v3-5x5v-xq33- CVSS 3.0
- 6.2 Medium
CVSS:3.0/AV:A/AC:L/PR:H/UI:N/S:C/C:N/I:N/A:H - Weakness
- CWE-20
- Updated
- 2026-11-02
NVD
5.8
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.
- Record
CVE-2019-0718- CVSS 3.1
- 5.8 Medium
CVSS:3.1/AV:N/AC:H/PR:H/UI:N/S:C/C:N/I:N/A:H - CVSS 2.0
- 5.5 Medium
AV:A/AC:L/Au:S/C:N/I:N/A:C - Weakness
- CWE-20
- Updated
- 2026-11-02
Affected products
- microsoft windows 10 version 1507
- microsoft windows 10 version 1607
- microsoft windows 10 version 1703
- microsoft windows 10 version 1709
- microsoft windows 10 version 1803
- microsoft windows 10 version 1809
- microsoft windows 10 version 1903 for x64-based systems
- microsoft windows 8.1
- microsoft windows server 2012
- microsoft windows server 2012 (server core installation)
- microsoft windows server 2012 r2
- microsoft windows server 2012 r2 (server core installation)
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- microsoft windows server 2016
- microsoft windows server 2016 (server core installation)
- microsoft windows server 2019
- microsoft windows server 2019 (server core installation)
- microsoft windows server, version 1803 (server core installation)
- microsoft windows server, version 1903 (server core installation)
- microsoft windows 10
- microsoft windows rt 8.1
History
| Recorded | Changed | Sources |
|---|---|---|
| aliases | EUVD | |
| first indexed | CVE List, GitHub Advisories, NVD |
Dates are when Every CVE recorded each change. Upstream dates may differ.
In short
CVE-2019-0718 is a medium vulnerability (CVSS 5.8) in Microsoft Windows 10 Version 1507, published August 14, 2019. No source lists public exploit code. EPSS puts the chance of exploitation in the next 30 days at 5.00%, the 92nd percentile. No source names a fixed version.