CVE-2025-22938

The Adtran 411 ONT device comes with weak default passwords that are easy to guess or find online. An attacker can use these passwords to gain unauthorized access to the device and control your network connection.

The Adtran 411 ONT L80.00.0011.M2 contains hardcoded weak default credentials that can be discovered through public sources or brute-force attacks. An unauthenticated remote attacker can authenticate with these default passwords to access administrative functions, leading to complete device compromise and potential network takeover.