CVE-2026-19586
Pre-Authentication OS Command Injection in Omada Gateways on OpenVPN Server in Omada Gateways
- Published
- Aug 20, 2026
- Updated
- Aug 28, 2026
- Assigning CNA
- TPLink
- Evidence observed
- Sep 21, 2026
Primary CVSS
nvd · CVSS 4.0
CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:L/SI:L/SA:L/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:XLow · next 30 days
- Percentile
- 92.7%
- Model date
- Sep 20, 2026
EPSS is a statistical estimate, not a certainty or a measure of impact. Combine it with CVSS, KEV status, exposure and your environment.
Summary
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.
Sources
1Python PoC exploiting CVE-2026-19586, an unauthenticated command injection in TP-Link Omada SSL VPN that executes arbitrary commands as root via OpenVPN username injection.
Responsible use
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