LINK Citrix has released information pertaining to numerous vulnerabilities that were found in the Citrix Hypervisor. They have released updates as well. Time to update your Citrix systems if affected.
LINK Read the advisory to get exact updates as to what products are affected.
LINK If you have a Citrix Hypervisor, time to update again.
LINK If you have the FactoryTalk AssetCentre product you need to examine this closely.
LINK If you use Hypervisor (formerly XenServer) then you should investigate updating.