CVE-2026-71926 DrayTek VigorSwitch Multiple Models OS Command Injection via setDevice
Remote attackers with admin credentials can execute arbitrary root commands on DrayTek VigorSwitch devices via unsanitized input in the setDevice function.
- Exploited in the wild
- Not known
- Login needed
- An administrator
- Attackable
- Over the internet
- Victim action needed
- Not needed
- Fix
- None listed
What is CVE-2026-71926?
CVE-2026-71926 is a high-severity command injection vulnerability in DrayTek Corporation VigorSwitch FX2120, published on 24 Aug 2026. An attacker needs administrator access to exploit it, with no action from the victim.
Official description
Multiple DrayTek VigorSwitch models contain a command injection vulnerability in the setDevice function. The vulnerability is caused by insufficient sanitization of the username, password, and location 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.
Weakness: CWE-78
Which versions are affected by CVE-2026-71926?
How do I fix CVE-2026-71926?
No fix has been published for CVE-2026-71926 yet. Limit exposure of the affected software until one is available.
Upgrade, and pass arguments to programs as a list instead of through a shell. More about Command injection.
Is CVE-2026-71926 being exploited?
There is no known exploitation of CVE-2026-71926 in the wild and no public exploit code.
Sources
Also known as GHSA-3f7c-qwwm-whmh.