The host is installed with Symantec AntiVirus 10.0.x before 10.1 MR9 or Symantec Client Security 3.0.x before 3.1 MR9 and is prone to a denial of service vulnerability. A flaw is present in the applications, which fail to handle "specific events" that prevent the user from having read access to unspecified resources. Successful exploitation could allow attackers to crash the service.