Multiple stack-based buffer overflows in Allied Telesyn TFTP Server (AT-TFTP) 1.9, and possibly earlier, allow remote attackers to cause a denial of service (crash) or execute arbitrary code via a long filename in a (1) GET or (2) PUT command.

The Allied Telesis AT-9000/24 Ethernet switch accepts management packets from arbitrary VLANs, contrary to the documentation, which allows remote attackers to conduct attacks against the switch from unexpected locations.

The Allied Telesis AT-9000/24 Ethernet switch has a default password for its admin account, "manager," which allows remote attackers to perform unauthorized actions.

Allied Telesyn AT-AR220e cable/DSL router firmware 1.08a RC14 with the portmapper and the 'Virtual Server' enabled can allow a remote attacker to gain access to mapped services even though the single portmappings may be disabled.

Allied Telesyn AT-8024 1.3.1 and Rapier 24 switches allow remote authenticated users to cause a denial of service in the management interface via a stream of zero (null) bytes sent via UDP to a running service.

The Allied Telesyn AT-9724TS switch allows remote attackers to cause a denial of service via a large amount of UDP data to the switch, which leads to unstable operation and possibly failure of the management interface or routing.