Cloud Vulnerability DB
A community-led vulnerabilities database
Introducing Wiz for Exposure Management: Unify, prioritize, and remediate exposures everywhere.
Vulnerability DatabaseCVE-2020-16891
CVE-2020-16891:
vulnerability analysis and mitigation
Overview
A remote code execution vulnerability (CVE-2020-16891) exists in Windows Hyper-V when the host server fails to properly validate input from an authenticated user on a guest operating system. The vulnerability was disclosed in Microsoft's October 2020 Patch Tuesday release (Tenable Blog).
Technical details
The vulnerability received a CVSS v3.1 Base Score of 8.8 (HIGH) with the vector string CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H. The vulnerability is classified under CWE-20 (Improper Input Validation) (NVD).
Impact
If successfully exploited, an attacker could execute arbitrary code on the host operating system. The vulnerability allows an attacker to run a specially crafted application on a guest operating system that could cause the Hyper-V host operating system to execute arbitrary code (MITRE CVE).
Mitigation and workarounds
Microsoft has released a security update that addresses the vulnerability by correcting how Hyper-V validates guest operating system user input (MITRE CVE).
Additional resources
Source: This report was generated using AI
Free Vulnerability Assessment
Benchmark your Cloud Security Posture
Evaluate your cloud security practices across 9 security domains to benchmark your risk level and identify gaps in your defenses.
Additional Wiz resources
Get a personalized demo
Ready to see Wiz in action?
"Best User Experience I have ever seen, provides full visibility to cloud workloads."
David EstlickCISO
"Wiz provides a single pane of glass to see what is going on in our cloud environments."
Adam FletcherChief Security Officer
"We know that if Wiz identifies something as critical, it actually is."
Greg PoniatowskiHead of Threat and Vulnerability Management