Cisco ≫ Ios

Vulnerability in Cisco IOS 11.1CC and 11.1CT with distributed fast switching (DFS) enabled allows remote attackers to bypass certain access control lists when the router switches traffic from a DFS-enabled interface to an interface that does not have...

Vulnerability in Cisco IOS 11.1 through 11.3 with distributed fast switching (DFS) enabled allows remote attackers to bypass certain access control lists when the router switches traffic from a DFS-enabled input interface to an output interface with ...

In Cisco routers under some versions of IOS 12.0 running NAT, some packets may not be filtered by input access list filters.

Cisco IOS 12.0 and other versions can be crashed by malicious UDP packets to the syslog port.

The "established" keyword in some Cisco IOS software allowed an attacker to bypass filtering.

Cisco PIX firewall and CBAC IP fragmentation attack results in a denial of service.

Attackers can crash a Cisco IOS router or device, provided they can get to an interactive prompt (such as a login). This applies to some IOS 9.x, 10.x, and 11.x releases.

AAA authentication on Cisco systems allows attackers to execute commands without authorization.

Buffer overflow in Cisco 7xx routers through the telnet service.

Land IP denial of service.