CVE-2026-19586: Pre-Authentication OS Command Injection in Omada Gateways on OpenVPN Server in Omada Gateways
A pre-authentication OS command injection vulnerability has been identified in Omada gateways configured to operate as an OpenVPN Server due to insufficient validation of client-supplied data during OpenVPN connection establishment. An unauthenticated remote attacker may provide specially crafted input influencing backend command execution logic before authentication completes. Exploitation requires the OpenVPN Server feature to be enabled, VPN service reachable by the attacker and attacker to be able to initiate an OpenVPN connection attempt.
Successful exploitation may allow arbitrary command execution, potentially leading to full compromise of the affected device.
Affected Software
Event History
Frequently Asked Questions
Which deployments should be prioritized for assessment?
Prioritize Omada gateways with the OpenVPN Server feature enabled where the VPN service is reachable by an attacker. Gateways without an enabled, reachable OpenVPN Server do not meet the stated exploitation conditions.
Does an attacker need valid VPN credentials?
No. The issue occurs before authentication completes, and an unauthenticated remote attacker only needs to be able to initiate an OpenVPN connection attempt to the reachable service.
What is the potential impact if exploitation succeeds?
Successful exploitation may allow arbitrary command execution on the affected gateway. This could result in full compromise of the device.