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
- TP-Link Systems Inc. · TP-Link Systems Inc · ER7212PC v2 · ER605 v2 · ER7206 v2 · ER7406 v1 · ER707-M2 v1 · ER7412-M2 v1
- CVSS v4.0 CNA
- 9.3 CRITICAL
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:X - CVSS v3.1 NVD
- 9.8 CRITICAL
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H - EPSS
- 5.70% chance of exploitation in the next 30 days, 93rd percentile
- Published
- 2026-08-20
- Updated
- 2026-08-28
Proof-of-concept exploits (1)
- mattgsys/CVE-2026-195862★ · 2026-08-21
Security advisories
- https://www.tp-link.com/us/support/faq/5256
- https://mattg.systems/posts/cve-2026-19586
- https://www.omadanetworks.com/en/support/download
- https://www.omadanetworks.com/us/support/download