Microsoft Hyper-V Address Corruption Vulnerability

An elevation of privilege vulnerability exists in Hyper-V on Windows 8 and Windows Server 2012. An attacker who successfully exploited this vulnerability could execute arbitrary code as System in another virtual machine (VM) on the shared Hyper-V host. An attacker would not be able to execute code on the Hyper-V host, only on guest VMs on the same host. The vulnerability could also allow denial of service in Hyper-V on the same platforms, allowing an attacker to cause the Hyper-V host to stop responding or restart.