CVE-2026-71928: DrayTek VigorSwitch Multiple Models OS Command Injection via fdftDevice
Multiple DrayTek VigorSwitch models contain a command injection vulnerability in the fdftDevice function. The vulnerability is caused by insufficient filtering of the username and password fields before command execution. A remote attacker can trigger this vulnerability via crafted input to execute arbitrary commands with root privileges. Exploitation requires valid administrative credentials for the device's web management interface.
Affected Software
Event History
Frequently Asked Questions
What access does an attacker need to exploit this issue?
The attacker must have valid administrative credentials for the device's web management interface. They can then send crafted values in the username and password fields to the vulnerable fdftDevice function.
What level of access could successful exploitation provide?
Successful exploitation can allow arbitrary command execution with root privileges on the affected switch.