The vulnerability of the Tunnel Mode mode in the implementation of SSL VPN technology for FortiOS operating systems allows a perpetrator to cause a service failure.

The vulnerability of the Tunnel Mode mode in the FortiOS operating system-based SSL VPN technology stems from the fact that data operations go beyond the buffer in memory when processing LCP packets. Exploiting this vulnerability can allow a malicious actor to cause service interruptions remotely...

CVE-2002-1108

Cisco Virtual Private Network VPN Client software 2.x.x, and 3.x before 3.6Rel, when configured with all tunnel mode, can be forced into acknowledging a TCP packet from outside the tunnel...