VYPR
← All advisories
High severity7.8NVD Advisory· Published Oct 16, 2020· Updated Jun 17, 2026

CVE-2020-1243

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 products

19
  • Microsoft/Windows 10 19099 versions
    cpe:2.3:o:microsoft:windows_10:1607:*:*:*:*:*:x64:*+ 8 more
    • cpe:2.3:o:microsoft:windows_10:1607:*:*:*:*:*:x64:*
    • cpe:2.3:o:microsoft:windows_10:1709:*:*:*:*:*:*:*range: 10.0.0
    • 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:*:*:*:*:*:*:*range: 10.0.0
    • cpe:2.3:o:microsoft:windows_10:1903:*:*:*:*:*:x64:*
    • cpe:2.3:o:microsoft:windows_10:2004:*:*:*:*:*:x64:*
    • cpe:2.3:o:microsoft:windows_10_1909:*:*:*:*:*:*:x64:*range: 10.0.0
  • Microsoft/Windows 10 1607v5
    cpe:2.3:o:microsoft:windows_10_1607:*:*:*:*:*:*:x64:*
    Range: 10.0.0
  • Microsoft/Windows 10 1809v5
    cpe:2.3:o:microsoft:windows_10_1809:*:*:*:*:*:*:x64:*
    Range: 10.0.0
  • Microsoft/Windows Server 2016v55 versions
    cpe:2.3:o:microsoft:windows_server_2016:*:*:*:*:*:*:*:*+ 4 more
    • cpe:2.3:o:microsoft:windows_server_2016:*:*:*:*:*:*:*:*range: 10.0.0
    • cpe:2.3:o:microsoft:windows_server_2016:-:*:*:*:*:*:*:*
    • cpe:2.3:o:microsoft:windows_server_2016:1903:*:*:*:*:*:*:*
    • cpe:2.3:o:microsoft:windows_server_2016:1909:*:*:*:*:*:*:*
    • cpe:2.3:o:microsoft:windows_server_2016:2004:*:*:*:*:*:*:*
  • Microsoft/Windows Server 2019v52 versions
    cpe:2.3:o:microsoft:windows_server_2019:*:*:*:*:*:*:*:*+ 1 more
    • cpe:2.3:o:microsoft:windows_server_2019:*:*:*:*:*:*:*:*range: 10.0.0
    • cpe:2.3:o:microsoft:windows_server_2019:-:*:*:*:*:*:*:*
  • Microsoft/Hyper-Vllm-fuzzy

Patches

Vulnerability mechanics

References

1

News mentions

0

No linked articles in our index yet.