CVE-2025-22940: Adtran 411 Firmware

Critical severity, CVSS 9.1. EPSS: 0.5% chance of exploitation in the next 30 days.

Incorrect access control in Adtran 411 ONT L80.00.0011.M2 allows unauthorized attackers to arbitrarily set the admin password.

Affected products

• Adtran 411 Firmware: version l80.00.0011.m2 only

Published 2025-03-31. Last modified 2026-06-17.