An overflow exists in several McAfee products using SecurityCenter module. A part of this module called "SecurityCenter Subscription Manager ActiveX control" (McSubMgr.dll) fails to handle an overly long string (more than 3000 bytes) in its 'IsAppExpired' member resulting in a stack overflow. By tricking the user into opening a specially crafted web page, an attacker can execute arbitrary commands resulting in a loss of integrity, and/or availability.