I'm setting up a Windows virtual machine in VirtualBox with the intent of using it as a sandbox for testing unknown or potentially dangerous applications.
My question: would installing the Guest Additions potentially open up my host PC for attack? I don't intend on sharing folders or passing through USB devices. Could malware somehow escape the hypervisor if Guest Additions was installed?
My host is Windows 7 Ultimate x64, and my guest will be Windows 7 as well.