The inter-module authentication mechanism (fwa1) in Check Point VPN-1/FireWall-1 4.1 and earlier may allow remote attackers to conduct a denial of service, aka "Inter-module Communications Bypass."
https://exchange.xforce.ibmcloud.com/vulnerabilities/5162
http://www.checkpoint.com/techsupport/alerts/list_vun.html#Inter-module_Communications