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CVE-2026-19586

CRITICALCVSS 9.8/10EPSS 5.09%

Last modified

CVE-2026-19586 is a critical-severity vulnerability rated 9.8/10 on the CVSS scale. 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. EPSS estimates a 5.09% chance of exploitation in the next 30 days.

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.

Metrics

CVSS 3.1
9.8/10

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

CVSS 4.0
9.3/10

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 Probability
5.09%

91.8th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

Affected Software

VendorProductVersions
Tp-LinkEr7212pc Firmware< 2.4.3
Tp-LinkEr605 Firmware< 2.4.4
Tp-LinkEr605w Firmware< 2.0.4
Tp-LinkEr7206 Firmware< 2.3.5
Tp-LinkEr7406 Firmware< 1.3.4
Tp-LinkEr707-M2 Firmware< 1.4.4
Tp-LinkEr7412-M2 Firmware< 1.2.0
Tp-LinkEr8411 Firmware< 1.4.1
Tp-LinkEr706w Firmware< 1.2.11
Tp-LinkEr706w-4g Firmware< 1.2.6
Tp-LinkEr706w-4g Firmware< 2.1.11
Tp-LinkEr706wp-4g Firmware< 1.1.11
Tp-LinkEr703wp-4g-Outdoor Firmware< 1.1.7
Tp-LinkEr603wp-4g-Outdoor Firmware< 1.0.2
Tp-LinkEr701-5g-Outdoor Firmware< 1.0.3
Tp-LinkDr3220v-4g Firmware< 1.2.0
Tp-LinkDr3650v Firmware< 1.2.0
Tp-LinkDr3650v-4g Firmware< 1.2.0
Tp-LinkDr3150 Firmware< 1.0.1

References

Timeline

Published
Last Modified
Status
Analyzed

Frequently Asked Questions

What is CVE-2026-19586?
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.
How severe is CVE-2026-19586?
CVE-2026-19586 has a CVSS score of 9.8/10 (CRITICAL severity). The EPSS model estimates a 5.09% probability of exploitation in the next 30 days.
How do I fix CVE-2026-19586?
Check the vendor references and advisories linked above for patched versions and mitigation guidance. You can also run a Strix scan to test if your systems are affected.

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Source: NVD / NIST