CVE-2020-1243HighCVSS 7.8

Windows Hyper-V Denial of Service Vulnerability

Published
October 13, 2020
Last Modified
—

🔗 CVE IDs covered (1)

CVE-2020-1243 →

📋 Description

A denial of service vulnerability exists when Microsoft Hyper-V on a host server fails to properly validate specific malicious data from a user on a guest operating system. 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. The security update addresses the vulnerability by resolving the conditions where Hyper-V would fail to handle these requests.

🎯 Affected products14

  • Windows 10 Version 1607 for x64-based Systems
  • Windows 10 Version 1709 for x64-based Systems
  • Windows 10 Version 1803 for x64-based Systems
  • Windows 10 Version 1809 for x64-based Systems
  • Windows 10 Version 1903 for x64-based Systems
  • Windows 10 Version 1909 for x64-based Systems
  • Windows 10 Version 2004 for x64-based Systems
  • Windows Server 2016
  • Windows Server 2016 (Server Core installation)
  • Windows Server 2019
  • Windows Server 2019 (Server Core installation)
  • Windows Server, version 1903 (Server Core installation)
  • Windows Server, version 1909 (Server Core installation)
  • Windows Server, version 2004 (Server Core installation)

✅ Remediation

KB4580330 (Security Update) KB4577668 (Security Update) KB4577671 (Security Update) KB4580328 (Security Update) KB4579311 (Security Update) KB4580346 (Security Update)

🔗 References (13)