CVE-2019-25249: Devolo AG Dlan 550 Duo+ Starter Kit

Critical severity, CVSS 9.8. EPSS: 0.4% chance of exploitation in the next 30 days.

devolo dLAN 500 AV Wireless+ 3.1.0-1 contains an authentication bypass vulnerability that allows attackers to enable hidden services through the htmlmgr CGI script. Attackers can enable telnet and remote shell services, reboot the device, and gain root access without a password by manipulating system configuration parameters.

Affected products

• Devolo AG Dlan 550 Duo+ Starter Kit

Published 2025-12-24. Last modified 2026-06-17.