Under certain circumstances an authenticated user could lock other users out of the system or take over their accounts in Metasys ADS/ADX/OAS server 10 versions prior to 10.1.5 and Metasys ADS/ADX/OAS server 11 versions prior to 11.0.2.
CWE-287 - Improper Authentication
Improper (or broken) authentication attacks are widespread, and have accounted for many of the worst data breaches in recent years. Improper authentication attacks are a class of vulnerabilities where an attacker impersonates a legitimate user by exploiting weaknesses in either session management or credential management to gain access to the user’s account. This can result in disclosure of sensitive information, and can lead to system compromise, theft, identity theft, and fraud.