CVE-2019-25249 devolo dLAN 500 AV Wireless+ 3.1.0-1 Remote Code Execution via htmlmgr
Attackers can bypass authentication to enable hidden services and gain root access on devolo dLAN devices.
- Exploited in the wild
- Not known
- Login needed
- Any signed-in user
- Attackable
- Over the internet
- Victim action needed
- Not needed
- Fix
- None listed
What is CVE-2019-25249?
CVE-2019-25249 is a high-severity authentication bypass vulnerability in devolo AG dLAN 550 duo+ Starter Kit, published on 24 Dec 2025. Any signed-in user can exploit it over the network, with no action from the victim.
Official description
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.
Weakness: CWE-266
Which versions are affected by CVE-2019-25249?
How do I fix CVE-2019-25249?
No fix has been published for CVE-2019-25249 yet. Limit exposure of the affected software until one is available.
Upgrade, and rotate credentials and sessions that may have been exposed. More about Authentication bypass.
Is CVE-2019-25249 being exploited?
It is not confirmed as exploited in the wild, but public exploit code for CVE-2019-25249 exists.
Sources
Also known as GHSA-p782-2pf9-qvmm.