CVE-2026-71929: DrayTek VigorSwitch Multiple Models OS Command Injection via setDevProto
Multiple DrayTek VigorSwitch models contain a command injection vulnerability in the setDevProto 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
Who can exploit this issue?
An attacker must be able to reach the device's web management interface and possess valid administrative credentials. The provided information does not indicate that unauthenticated users can exploit it.
What is the impact of successful exploitation?
A successful attacker can inject and execute arbitrary operating-system commands with root privileges on the affected VigorSwitch device. This can compromise the device's confidentiality, integrity, and availability.
Which inputs are involved in the vulnerable operation?
The issue is associated with insufficient filtering of username and password fields processed by the setDevProto function before command execution.