Technical Information

Brief overview of the risk:
The vulnerability could allow denial of service if an authenticated attacker runs a specially crafted application in a virtual machine (VM) session. Note that the denial of service does not allow an attacker to execute code or elevate user rights on other VMs running on the Hyper-V host; however, it could cause other VMs on the host to not be manageable in Virtual Machine Manager.

Detailed Information on the risk:

A denial of service vulnerability exists in Hyper-V when an authenticated attacker runs a specially crafted application in a virtual machine (VM) session. Note that the denial of service does not allow an attacker to execute code or elevate user rights on other VMs running on the Hyper-V host; however, it could cause other VMs on the host to not be manageable in Virtual Machine Manager.

Further information on this exploit is available at : MS15-042

Windows 8.1 for x64-based Systems
Windows Server 2012 R2
Windows Server 2012 R2 (Server Core installation)