CVE-2019-0720
highpriority · track · 32EPSS 0.038 · 90 %ileEURUUSEPSS · scored 2026-10-28
A remote code execution vulnerability exists when Windows Hyper-V Network Switch on a host server fails to properly validate input from an authenticated user on a guest operating system. To exploit the vulnerability, an attacker could run a specially crafted application on a guest operating system that could cause the Hyper-V host operating system to execute arbitrary code. An attacker who successfully exploited the vulnerability could execute arbitrary code on the host operating system. The security update addresses the vulnerability by correcting how Windows Hyper-V Network Switch validates guest operating system network traffic.
cvss
Technical severity, 0–10. One row per scoring source.
base score 0–10 · higher = more severe · hover a vector to decode
weaknesses
The CWE weakness classes this flaw belongs to.
affected products (57)
Products and version ranges known to be affected.
also known as (4)
Other names and identifiers for this entity.
sources
Which sources assert this record, and when.
references (8)
External citations — patches, advisories, analysis.
- https://nvd.nist.gov/vuln/detail/CVE-2019-0720cnnvd
- https://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2019-0720cnnvd
- https://portal.msrc.microsoft.com/zh-CN/security-guidance/advisory/CVE-2019-0720cnnvd
- https://security.business.xerox.com/wp-content/uploads/2019/11/cert_XRX19-029_FFPSv2_Win10_SecurityBulletin_Nov2019.pdfcnnvd
- https://vigilance.fr/vulnerability/Windows-vulnerabilities-of-August-2019-30038cnnvd
- https://www.auscert.org.au/bulletins/ESB-2019.4343/cnnvd
- https://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2019-0720enisa_euvd
- https://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2019-0720PatchVendor Advisorynvd
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