CWE-1393 — Vulnerability Class 27

CWE-1393 represents a critical authentication weakness where software systems retain hardcoded default passwords for administrative or critical user accounts. This flaw is typically exploited by attackers who scan for known default credentials, allowing them to bypass authentication mechanisms and gain unauthorized access to sensitive data or system controls without needing to crack complex passwords. The ease of this attack stems from the widespread assumption that administrators will change these initial settings, which often goes unfulfilled in production environments. To mitigate this risk, developers must enforce mandatory password changes during the initial setup process, ensuring that default credentials cannot be used for persistent access. Additionally, implementing strong password policies and removing default accounts entirely from final builds significantly reduces the attack surface, preventing trivial exploitation by automated tools and malicious actors alike.