Description
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 products
tp-link: er7212pc firmware; tp-link: er7212pc; tp-link: er605 firmware; tp-link: er605; tp-link: er605w firmware; tp-link: er605w; tp-link: er7206 firmware; tp-link: er7206; tp-link: er7406 firmware; tp-link: er7406; tp-link: er707-m2 firmware; tp-link: er707-m2; tp-link: er7412-m2 firmware; tp-link: er7412-m2; tp-link: er8411 firmware
References4
- www.tp-link.com/us/support/faq/5256/ Vendor Advisory
- mattg.systems/posts/cve-2026-19586/ ExploitThird Party Advisory
- www.omadanetworks.com/en/support/download/ Product
- www.omadanetworks.com/us/support/download/ Product
Metrics
- CVSS 3.1
-
9.8
CRITICAL
Score source: NVD
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H - CVSS 4.0
-
9.3
CRITICAL
Score source: CNA
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 - EPSS — exploit probability
- 6% percentile: 93 · as of 10 November 2026
- CWE
- CWE-78
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