CVE-2006-0764
The Authentication, Authorization, and Accounting (AAA) capability in versions 5.0(1) and 5.0(3) of the software used by multiple Cisco Anomaly Detection and Mitigation products, when running with an incomplete TACACS+ configuration without a "tacacs-server host" command, allows remote attackers to bypass authentication and gain privileges, aka Bug ID CSCsd21455.
Date published : 2006-02-17
http://www.securityfocus.com/bid/16661
http://www.cisco.com/en/US/products/products_security_advisory09186a008060519a.shtml