CVE-2009-2863
Race condition in the Firewall Authentication Proxy feature in Cisco IOS 12.0 through 12.4 allows remote attackers to bypass authentication, or bypass the consent web page, via a crafted request, aka Bug ID CSCsy15227.
Date published : 2009-09-28
http://www.securityfocus.com/bid/36491
http://www.cisco.com/en/US/products/products_security_advisory09186a0080af8132.shtml