This allows remote attackers to cause a denial of service (crash) and possibly execute arbitrary code via unknown vectors. NOTE: this is only a vulnerability if the attacker can "masquerade as an authorized site."
Multiple Symantec products are prone to a stack-based buffer-overflow vulnerability because the applications utilize an ActiveX control that fails to adequately validate user-supplied input.
An attacker can exploit this issue to execute arbitrary code in the context of the application using the ActiveX control (typically Internet Explorer). Failed attacks will likely cause denial-of-service conditions.
Vendor Status:
Symantec as issued an update for this vulnerablity