Vulnerabilidades

Cisco IOS 11.x and 12.x allows remote attackers to cause a denial of service by sending the ENVIRON option to the Telnet daemon before it is ready to accept it, which causes the system to reboot.

Cabletron SmartSwitch Router (SSR) 8000 firmware 2.x can only handle 200 ARP requests per second allowing a denial of service attack to succeed with a flood of ARP requests exceeding that limit.

Denial of service in Cisco routers running NAT via a PORT command from an FTP client to a Telnet port.

FlowPoint DSL router firmware versions prior to 3.0.8 allows a remote attacker to exploit a password recovery feature from the network and conduct brute force password guessing, instead of limiting the feature to the serial console port.

Cisco 675 routers running CBOS allow remote attackers to establish telnet sessions if an exec or superuser password has not been set.

Vulnerability in Cisco 7xx series routers allows a remote attacker to cause a system reload via a TCP connection to the router's TELNET port.

The HTTP server in Cisco 7xx series routers 3.2 through 4.2 is enabled by default, which allows remote attackers to change the router's configuration.

Denial of service of Ascend routers through port 150 (remote administration).

Denial of service in Cisco IOS web server allows attackers to reboot the router using a long URL.

An attacker can identify a CISCO device by sending a SYN packet to port 1999, which is for the Cisco Discovery Protocol (CDP).

ROUTERmate has a default SNMP community name which allows remote attackers to modify its configuration.

The Motorola CableRouter allows any remote user to connect to and configure the router on port 1024.

A memory leak in a Motorola CableRouter allows remote attackers to conduct a denial of service via a large number of telnet connections.

Attackers can cause a denial of service in Ascend MAX and Pipeline routers with a malformed packet to the discard port, which is used by the Java Configurator tool.

Ascom Timeplex router allows remote attackers to obtain sensitive information or conduct unauthorized activities by entering debug mode through a sequence of CTRL-D characters.

Cisco routers 9.17 and earlier allow remote attackers to bypass security restrictions via certain IP source routed packets that should normally be denied using the "no ip source-route" command.