I would assume you are not at risk. However, you should also have several compensating controls around vCenter as well.
Edward L. Haletky
VMware Communities User Moderator, VMware vExpert 2009-2016
Author of the books 'VMWare ESX and ESXi in the Enterprise: Planning Deployment Virtualization Servers', Copyright 2011 Pearson Education. 'VMware vSphere and Virtual Infrastructure Security: Securing the Virtual Environment', Copyright 2009 Pearson Education.