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CVE-2026-19586: TP-Link Omada gateways can run attacker commands via VPN

CVE-2026-19586 · published 1 month ago

Summary

If an Omada gateway is set up as an OpenVPN (remote‑access VPN) server, an unauthenticated attacker can send specially crafted data during connection setup that makes the device execute any command it chooses. This could give the attacker full control of the gateway. Disable the OpenVPN server feature if it isn’t needed, or install the latest firmware that patches the problem.

What to do

Update tp-link er7212pc_firmware to version 2.4.3 or later.
Update tp-link er605_firmware to version 2.4.4 or later.
Update tp-link er605w_firmware to version 2.0.4 or later.
Update tp-link er7206_firmware to version 2.3.5 or later.
Update tp-link er7406_firmware to version 1.3.4 or later.
Update tp-link er707-m2_firmware to version 1.4.4 or later.
Update tp-link er7412-m2_firmware to version 1.2.0 or later.
Update tp-link er8411_firmware to version 1.4.1 or later.
Update tp-link er706w_firmware to version 1.2.11 or later.
Update tp-link er706wp-4g_firmware to version 1.1.11 or later.
Update tp-link er703wp-4g-outdoor_firmware to version 1.1.7 or later.
Update tp-link er603wp-4g-outdoor_firmware to version 1.0.2 or later.
Update tp-link er701-5g-outdoor_firmware to version 1.0.3 or later.
Update tp-link dr3220v-4g_firmware to version 1.2.0 or later.
Update tp-link dr3650v_firmware to version 1.2.0 or later.
Update tp-link dr3650v-4g_firmware to version 1.2.0 or later.
Update tp-link dr3150_firmware to version 1.0.1 or later.
Update tp-link systems inc. er7212pc v2 to version 2.4.3 Build 20260722 Rel.40250 or later.
Update tp-link systems inc. er605 v2 to version 2.4.4 Build 20260630 Rel.14398 or later.
Update tp-link systems inc. er7206 v2 to version 2.3.5 Build 20260625 Rel.43136 or later.
Update tp-link systems inc er7406 v1 to version 1.3.4 Build 20260625 Rel.43136 or later.
Update tp-link systems inc. er707-m2 v1 to version 1.4.4 Build 20260625 Rel.43063 or later.
Update tp-link systems inc er7412-m2 v1 to version 1.2.0 Build 20260630 Rel.82947 or later.
Update tp-link systems inc. er8411 v1 to version 1.4.1 Build 20260708 Rel.64832 or later.
Update tp-link systems inc. er706w v1 to version 1.2.11 Build 20260723 Rel.41567 or later.
Update tp-link systems inc. v1 to version 1.2.6 Build 20260723 Rel.41321 or later.
Update tp-link systems inc. er706w-4g v2 to version 2.1.11 Build 20260723 Rel.41624 or later.
Update tp-link systems inc. er706wp-4g v1 to version 1.1.11 Build 20260723 Rel.41624 or later.
Update tp-link systems inc. er703wp-4g-outdoor v1 to version 1.1.7 Build 20260723 Rel.41712 or later.
Update tp-link systems inc. dr3220v-4g v1 to version 1.2.0 Build 20260630 Rel.82652 or later.
Update tp-link systems inc. dr3650v v1 to version 1.2.0 Build 20260630 Rel.83311 or later.
Update tp-link systems inc. dr3650v-4g v1 to version 1.2.0 Build 20260630 Rel.83347 or later.
Update tp-link systems inc. er603wp-4g-outdoor v1 to version 1.0.2 Build 20260723 Rel.43271 or later.
Update tp-link systems inc. dr3150 v1 to version 1.0.1 Build 20260722 Rel.16854 or later.
Update tp-link systems inc. er701-5g-outdoor v1 to version 1.0.3 Build 20260723 Rel.40931 or later.
Update tp-link systems inc. er605w v2 to version 2.0.4 Build 20260723 Rel.43763 or later.

Affected software

Vendor	Product	Affected versions
tp-link	er7212pc_firmware	< 2.4.3 `cpe:2.3:o:tp-link:er7212pc_firmware::::::::`
tp-link	er605_firmware	< 2.4.4 `cpe:2.3:o:tp-link:er605_firmware::::::::`
tp-link	er605w_firmware	< 2.0.4 `cpe:2.3:o:tp-link:er605w_firmware::::::::`
tp-link	er7206_firmware	< 2.3.5 `cpe:2.3:o:tp-link:er7206_firmware::::::::`
tp-link	er7406_firmware	< 1.3.4 `cpe:2.3:o:tp-link:er7406_firmware::::::::`
tp-link	er707-m2_firmware	< 1.4.4 `cpe:2.3:o:tp-link:er707-m2_firmware::::::::`
tp-link	er7412-m2_firmware	< 1.2.0 `cpe:2.3:o:tp-link:er7412-m2_firmware::::::::`
tp-link	er8411_firmware	< 1.4.1 `cpe:2.3:o:tp-link:er8411_firmware::::::::`
tp-link	er706w_firmware	< 1.2.11 `cpe:2.3:o:tp-link:er706w_firmware::::::::`
tp-link	er706w-4g_firmware	< 1.2.6 < 2.1.11 `cpe:2.3:o:tp-link:er706w-4g_firmware::::::::`
tp-link	er706wp-4g_firmware	< 1.1.11 `cpe:2.3:o:tp-link:er706wp-4g_firmware::::::::`
tp-link	er703wp-4g-outdoor_firmware	< 1.1.7 `cpe:2.3:o:tp-link:er703wp-4g-outdoor_firmware::::::::`
tp-link	er603wp-4g-outdoor_firmware	< 1.0.2 `cpe:2.3:o:tp-link:er603wp-4g-outdoor_firmware::::::::`
tp-link	er701-5g-outdoor_firmware	< 1.0.3 `cpe:2.3:o:tp-link:er701-5g-outdoor_firmware::::::::`
tp-link	dr3220v-4g_firmware	< 1.2.0 `cpe:2.3:o:tp-link:dr3220v-4g_firmware::::::::`
tp-link	dr3650v_firmware	< 1.2.0 `cpe:2.3:o:tp-link:dr3650v_firmware::::::::`
tp-link	dr3650v-4g_firmware	< 1.2.0 `cpe:2.3:o:tp-link:dr3650v-4g_firmware::::::::`
tp-link	dr3150_firmware	< 1.0.1 `cpe:2.3:o:tp-link:dr3150_firmware::::::::`
tp-link systems inc.	er7212pc v2	< 2.4.3 Build 20260722 Rel.40250
tp-link systems inc.	er605 v2	< 2.4.4 Build 20260630 Rel.14398
tp-link systems inc.	er7206 v2	< 2.3.5 Build 20260625 Rel.43136
tp-link systems inc	er7406 v1	< 1.3.4 Build 20260625 Rel.43136
tp-link systems inc.	er707-m2 v1	< 1.4.4 Build 20260625 Rel.43063
tp-link systems inc	er7412-m2 v1	< 1.2.0 Build 20260630 Rel.82947
tp-link systems inc.	er8411 v1	< 1.4.1 Build 20260708 Rel.64832
tp-link systems inc.	er706w v1	< 1.2.11 Build 20260723 Rel.41567
tp-link systems inc.	v1	< 1.2.6 Build 20260723 Rel.41321
tp-link systems inc.	er706w-4g v2	< 2.1.11 Build 20260723 Rel.41624
tp-link systems inc.	er706wp-4g v1	< 1.1.11 Build 20260723 Rel.41624
tp-link systems inc.	er703wp-4g-outdoor v1	< 1.1.7 Build 20260723 Rel.41712
tp-link systems inc.	dr3220v-4g v1	< 1.2.0 Build 20260630 Rel.82652
tp-link systems inc.	dr3650v v1	< 1.2.0 Build 20260630 Rel.83311
tp-link systems inc.	dr3650v-4g v1	< 1.2.0 Build 20260630 Rel.83347
tp-link systems inc.	er603wp-4g-outdoor v1	< 1.0.2 Build 20260723 Rel.43271
tp-link systems inc.	dr3150 v1	< 1.0.1 Build 20260722 Rel.16854
tp-link systems inc.	er701-5g-outdoor v1	< 1.0.3 Build 20260723 Rel.40931
tp-link systems inc.	er605w v2	< 2.0.4 Build 20260723 Rel.43763

Original advisory text

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.

References

https://mattg.systems/posts/cve-2026-19586/ Exploit Third Party Advisory
https://www.omadanetworks.com/en/support/download/ Product
https://www.omadanetworks.com/us/support/download/ Product
https://www.tp-link.com/us/support/faq/5256/ Vendor Advisory

Severity

9.3 Critical

Exploitation

EPSS 6%

Type

CWE-78OS Command Injection

Timeline

Published20 Aug 2026

Updated25 Sep 2026

First seen20 Aug 2026

Sources

CVE-2026-19586 · NVD

CVE-2026-19586 · MITRE

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