McAfee GroupShield for Exchange X-Header Security Bypass Vulnerability

This host is installed McAfee GroupShield for Microsoft Exchange and is prone to X-Header Security Bypass Vulnerability.
Successful exploits will let the attacker craft malicious contents inside the X-Header and can bypass antivirus detection and launch further attacks into the affected system. Impact Level: System
No solution or patch was made available for at least one year since disclosure of this vulnerability. Likely none will be provided anymore. General solution options are to upgrade to a newer release, disable respective features, remove the product or replace the product by another one.
This flaw is due to failure in scanning X-Headers while sending mail messages.
McAfee GroupShield for Exchange version 6.0.616.102 and prior.