The vulnerability of the Cisco IOS operating system allows a malicious individual to establish a network connection using the TELNET protocol.

The Cisco IOS operating system of telecommunications equipment does not recognize the keyword “vrf-also” during the execution of the “access-class” command. This allows a malicious intruder to establish a network connection using the TELNET protocol...

PT-2012-2511

Name of the Vulnerable Software and Affected Versions Cisco IOS versions 12.2 through 12.4 and 15.0 Description The issue allows remote attackers to establish TELNET connections from arbitrary source IP addresses via a standard TELNET client. This occurs because Cisco IOS does not recognize the...

CVE-2012-0338: Improper Input Validation

Cisco IOS 12.2 through 12.4 and 15.0 does not recognize the vrf-also keyword during enforcement of access-class commands, which allows remote attackers to establish SSH connections from arbitrary source IP addresses via a standard SSH client, aka Bug ID CSCsv86113...