Marconi ASX-1000 ASX switches allow remote attackers to cause a denial of service in the telnet and web management interfaces via a malformed packet with the SYN-FIN and More Fragments attributes set.

Marconi ForeThought 7.1 allows remote attackers to cause a denial of service by causing both telnet sessions to be locked via unusual input (e.g., from a port scanner), which prevents others from logging into the device.