CVE-2025-55740

CVE-2025-55740 is a configuration vulnerability in nginx-defender, a Web Application Firewall, where default credentials in example configuration files (e.g., "change_me_please" and "admin123") can grant administrative control if not changed by users. This medium-severity vulnerability (CVSS 6.5) allows unauthenticated attackers with network access to bypass security protections, leading to potential compromise of confidentiality and integrity. While there is no evidence of active exploitation, public exploit code, or significant community discussion, users are urged to update to v1.5.0 or later and ensure default credentials are changed during deployment.