CVE-2026-71916: DrayTek VigorSwitch Multiple Models OS Command Injection via commandTable
Multiple DrayTek VigorSwitch models contain a command injection vulnerability in the commandTable function. The vulnerability is caused by incomplete filtering of dangerous characters such as backticks, newline characters, and single quotes in the parameter field. 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 vulnerability?
An attacker must be able to reach the device's web management interface and possess valid administrative credentials. The attack can be performed remotely and does not require user interaction.
What level of access can successful exploitation provide?
Successful exploitation allows execution of arbitrary operating system commands with root privileges on the affected device. This can compromise the confidentiality, integrity, and availability of the switch.
What input is involved in exploitation?
The issue is in the commandTable function's parameter field, where filtering of characters including backticks, newline characters, and single quotes is incomplete. Crafted input through that field can trigger command injection.