Microsoft Windows 8 and Windows Server 2012, when Hyper-V is used, does not ensure memory-address validity, which allows guest OS users to execute arbitrary code in all guest OS instances, and allows guest OS users to cause a denial of service (host OS crash), via a guest-to-host hypercall with a crafted function parameter, aka "Address Corruption Vulnerability."
https://oval.cisecurity.org/repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A18851
https://docs.microsoft.com/en-us/security-updates/securitybulletins/2013/ms13-092