The American Power Conversion (APC) AP7932 0u 30amp Switched Rack Power Distribution Unit (PDU), with rpdu 3.5.5 and aos 3.5.6, allows remote attackers to bypass authentication and obtain login access by making a login attempt while a different client is logged in, and then resubmitting the login attempt once the other client exits.
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.