Adobe LiveCycle Workflow 7.01 and LiveCycle Forum Manager 7.01 allows users to authenticate and perform privileged actions when their account is marked "OBSOLETE" but the account is also active, within the authentication system.
https://exchange.xforce.ibmcloud.com/vulnerabilities/25779
http://www.vupen.com/english/advisories/2006/1343
http://www.securityfocus.com/bid/17511
http://www.adobe.com/support/techdocs/333036.html