CVE-2026-19586
Pre-Authentication OS Command Injection in Omada Gateways on OpenVPN Server in Omada Gateways
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.
INFO
Published Date :
Aug. 20, 2026, 7:16 p.m.
Last Modified :
Aug. 20, 2026, 7:16 p.m.
Remotely Exploit :
Yes !
Source :
f23511db-6c3e-4e32-a477-6aa17d310630
Affected Products
The following products are affected by CVE-2026-19586
vulnerability.
Even if cvefeed.io is aware of the exact versions of the
products
that
are
affected, the information is not represented in the table below.
CVSS Scores
| Score | Version | Severity | Vector | Exploitability Score | Impact Score | Source |
|---|---|---|---|---|---|---|
| CVSS | 134c704f-9b21-4f2e-91b3-4a467353bcc0 | |||||
| CVSS 4.0 | CRITICAL | f23511db-6c3e-4e32-a477-6aa17d310630 | ||||
| CVSS 4.0 | CRITICAL | f23511db-6c3e-4e32-a477-6aa17d310630 |
Solution
- Update Omada gateway firmware to the latest version.
- Disable OpenVPN Server if not actively used.
- Restrict access to the VPN service.
References to Advisories, Solutions, and Tools
Here, you will find a curated list of external links that provide in-depth
information, practical solutions, and valuable tools related to
CVE-2026-19586.
| URL | Resource |
|---|---|
| https://www.omadanetworks.com/en/support/download/ | |
| https://www.omadanetworks.com/us/support/download/ | |
| https://www.tp-link.com/us/support/faq/5256/ |
CWE - Common Weakness Enumeration
While CVE identifies
specific instances of vulnerabilities, CWE categorizes the common flaws or
weaknesses that can lead to vulnerabilities. CVE-2026-19586 is
associated with the following CWEs:
Common Attack Pattern Enumeration and Classification (CAPEC)
Common Attack Pattern Enumeration and Classification
(CAPEC)
stores attack patterns, which are descriptions of the common attributes and
approaches employed by adversaries to exploit the CVE-2026-19586
weaknesses.
We scan GitHub repositories to detect new proof-of-concept exploits. Following list is a collection of public exploits and proof-of-concepts, which have been published on GitHub (sorted by the most recently updated).
Results are limited to the first 15 repositories due to potential performance issues.
The following list is the news that have been mention
CVE-2026-19586 vulnerability anywhere in the article.
The following table lists the changes that have been made to the
CVE-2026-19586 vulnerability over time.
Vulnerability history details can be useful for understanding the evolution of a vulnerability, and for identifying the most recent changes that may impact the vulnerability's severity, exploitability, or other characteristics.
-
New CVE Received by f23511db-6c3e-4e32-a477-6aa17d310630
Aug. 20, 2026
Action Type Old Value New Value Added Affected [{'vendor': 'TP-Link Systems Inc.', 'product': 'ER7212PC v2', 'versions': [{'status': 'affected', 'version': '0', 'lessThan': '2.4.3 Build 20260722 Rel.40250', 'versionType': 'custom'}], 'defaultStatus': 'unaffected'}, {'vendor': 'TP-Link Systems Inc.', 'product': 'ER605 v2', 'versions': [{'status': 'affected', 'version': '0', 'lessThan': '2.4.4 Build 20260630 Rel.14398', 'versionType': 'custom'}], 'defaultStatus': 'unaffected'}, {'vendor': 'TP-Link Systems Inc.', 'product': 'ER7206 v2', 'versions': [{'status': 'affected', 'version': '0', 'lessThan': '2.3.5 Build 20260625 Rel.43136', 'versionType': 'custom'}], 'defaultStatus': 'unaffected'}, {'vendor': 'TP-Link Systems Inc', 'product': 'ER7406 v1', 'versions': [{'status': 'affected', 'version': '0', 'lessThan': '1.3.4 Build 20260625 Rel.43136', 'versionType': 'custom'}], 'defaultStatus': 'unaffected'}, {'vendor': 'TP-Link Systems Inc.', 'product': 'ER707-M2 v1', 'versions': [{'status': 'affected', 'version': '0', 'lessThan': '1.4.4 Build 20260625 Rel.43063', 'versionType': 'custom'}], 'defaultStatus': 'unaffected'}, {'vendor': 'TP-Link Systems Inc', 'product': 'ER7412-M2 v1', 'versions': [{'status': 'affected', 'version': '0', 'lessThan': '1.2.0 Build 20260630 Rel.82947', 'versionType': 'custom'}], 'defaultStatus': 'unaffected'}, {'vendor': 'TP-Link Systems Inc.', 'product': 'ER8411 v1', 'versions': [{'status': 'affected', 'version': '0', 'lessThan': '1.4.1 Build 20260708 Rel.64832', 'versionType': 'custom'}], 'defaultStatus': 'unaffected'}, {'vendor': 'TP-Link Systems Inc.', 'product': 'ER706W v1', 'versions': [{'status': 'affected', 'version': '0', 'lessThan': '1.2.11 Build 20260723 Rel.41567', 'versionType': 'custom'}], 'defaultStatus': 'unaffected'}, {'vendor': 'TP-Link Systems Inc.', 'product': 'v1', 'versions': [{'status': 'affected', 'version': '0', 'lessThan': '1.2.6 Build 20260723 Rel.41321', 'versionType': 'custom'}], 'defaultStatus': 'unaffected'}, {'vendor': 'TP-Link Systems Inc.', 'product': 'ER706W-4G v2', 'versions': [{'status': 'affected', 'version': '0', 'lessThan': '2.1.11 Build 20260723 Rel.41624', 'versionType': 'custom'}], 'defaultStatus': 'unaffected'}, {'vendor': 'TP-Link Systems Inc.', 'product': 'ER706WP-4G v1', 'versions': [{'status': 'affected', 'version': '0', 'lessThan': '1.1.11 Build 20260723 Rel.41624', 'versionType': 'custom'}], 'defaultStatus': 'unaffected'}, {'vendor': 'TP-Link Systems Inc.', 'product': 'ER703WP-4G-Outdoor v1', 'versions': [{'status': 'affected', 'version': '0', 'lessThan': '1.1.7 Build 20260723 Rel.41712', 'versionType': 'custom'}], 'defaultStatus': 'unaffected'}, {'vendor': 'TP-Link Systems Inc.', 'product': 'DR3220v-4G v1', 'versions': [{'status': 'affected', 'version': '0', 'lessThan': '1.2.0 Build 20260630 Rel.82652', 'versionType': 'custom'}], 'defaultStatus': 'unaffected'}, {'vendor': 'TP-Link Systems Inc.', 'product': 'DR3650v v1', 'versions': [{'status': 'affected', 'version': '0', 'lessThan': '1.2.0 Build 20260630 Rel.83311', 'versionType': 'custom'}], 'defaultStatus': 'unaffected'}, {'vendor': 'TP-Link Systems Inc.', 'product': 'DR3650v-4G v1', 'versions': [{'status': 'affected', 'version': '0', 'lessThan': '1.2.0 Build 20260630 Rel.83347', 'versionType': 'custom'}], 'defaultStatus': 'unaffected'}, {'vendor': 'TP-Link Systems Inc.', 'product': 'ER603WP-4G-Outdoor v1', 'versions': [{'status': 'affected', 'version': '0', 'lessThan': '1.0.2 Build 20260723 Rel.43271', 'versionType': 'custom'}], 'defaultStatus': 'unaffected'}, {'vendor': 'TP-Link Systems Inc.', 'product': 'DR3150 v1', 'versions': [{'status': 'affected', 'version': '0', 'lessThan': '1.0.1 Build 20260722 Rel.16854', 'versionType': 'custom'}], 'defaultStatus': 'unaffected'}, {'vendor': 'TP-Link Systems Inc.', 'product': 'ER701-5G-Outdoor v1', 'versions': [{'status': 'affected', 'version': '0', 'lessThan': '1.0.3 Build 20260723 Rel.40931', 'versionType': 'custom'}], 'defaultStatus': 'unaffected'}, {'vendor': 'TP-Link Systems Inc.', 'product': 'ER605W v2', 'versions': [{'status': 'affected', 'version': '0', 'lessThan': '2.0.4 Build 20260723 Rel.43763', 'versionType': 'custom'}], 'defaultStatus': 'unaffected'}] Added 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. Added CVSS V4.0 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 Added CWE CWE-78 Added Reference https://www.omadanetworks.com/en/support/download/ Added Reference https://www.omadanetworks.com/us/support/download/ Added Reference https://www.tp-link.com/us/support/faq/5256/ -
CVE Modified by 134c704f-9b21-4f2e-91b3-4a467353bcc0
Aug. 20, 2026
Action Type Old Value New Value Added SSVC {'id': 'CVE-2026-19586', 'role': 'CISA Coordinator', 'options': [{'exploitation': 'none'}, {'automatable': 'yes'}, {'technicalImpact': 'total'}], 'version': '2.0.3', 'timestamp': '2026-08-20T18:58:10.583443Z'}