CVE-2025-22939: Adtran 411 Firmware

Critical severity, CVSS 9.8. EPSS: 2.6% chance of exploitation in the next 30 days.

A command injection vulnerability in the telnet service of Adtran 411 ONT L80.00.0011.M2 allows attackers to escalate privileges to root and execute arbitrary commands.

Affected products

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

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