McAfee VirusScan Enterprise 8.5i and 8.7i does not properly interact with the processing of hcp:// URLs by the Microsoft Help and Support Center, which makes it easier for remote attackers to execute arbitrary code via malware that is correctly detected by this product, but with a detection approach that occurs too late to stop the code execution.
https://kc.mcafee.com/corporate/index?page=content&id=SB10012