9.8
CRITICAL
CVSS 3.1
CVE-2026-19586
Pre-Authentication OS Command Injection in Omada Gateways on OpenVPN Server in Omada Gateways
Overview
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.
Details
INFO
Published Date :
Aug. 20, 2026, 7:16 p.m.
Last Modified :
Sept. 3, 2026, 3:05 p.m.
Remotely Exploit :
Yes !
Source :
f23511db-6c3e-4e32-a477-6aa17d310630
Impact
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.
Scoring
CVSS Scores
The Common Vulnerability Scoring System is a standardized framework
for assessing the severity of vulnerabilities in software and systems.
We collect and displays CVSS scores from various sources for each CVE.
| Score | Version | Severity | Vector | Exploitability Score | Impact Score | Source |
|---|---|---|---|---|---|---|
| CVSS | 134c704f-9b21-4f2e-91b3-4a467353bcc0 | |||||
| CVSS 3.1 | CRITICAL | [email protected] | ||||
| CVSS 4.0 | CRITICAL | f23511db-6c3e-4e32-a477-6aa17d310630 | ||||
| CVSS 4.0 | CRITICAL | f23511db-6c3e-4e32-a477-6aa17d310630 |
Solution
Update Omada gateways to patch pre-authentication OS command injection vulnerability.
- Update Omada gateway firmware to the latest version.
- Disable OpenVPN Server if not actively used.
- Restrict access to the VPN service.
References
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://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 |
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.
CAPEC-6: Argument Injection Argument Injection
CAPEC-15: Command Delimiters Command Delimiters
CAPEC-43: Exploiting Multiple Input Interpretation Layers Exploiting Multiple Input Interpretation Layers
CAPEC-88: OS Command Injection OS Command Injection
CAPEC-108: Command Line Execution through SQL Injection Command Line Execution through SQL Injection
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.
-
Initial Analysis by [email protected]
Sep. 03, 2026
Action Type Old Value New Value Added CVSS V3.1 AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H Added CPE Configuration AND OR *cpe:2.3:o:tp-link:er7212pc_firmware:*:*:*:*:*:*:*:* versions up to (excluding) 2.4.3 OR cpe:2.3:h:tp-link:er7212pc:2.0:*:*:*:*:*:*:* Added CPE Configuration AND OR *cpe:2.3:o:tp-link:er605_firmware:*:*:*:*:*:*:*:* versions up to (excluding) 2.4.4 OR cpe:2.3:h:tp-link:er605:2.0:*:*:*:*:*:*:* Added CPE Configuration AND OR *cpe:2.3:o:tp-link:er605w_firmware:*:*:*:*:*:*:*:* versions up to (excluding) 2.0.4 OR cpe:2.3:h:tp-link:er605w:2.0:*:*:*:*:*:*:* Added CPE Configuration AND OR *cpe:2.3:o:tp-link:er7206_firmware:*:*:*:*:*:*:*:* versions up to (excluding) 2.3.5 OR cpe:2.3:h:tp-link:er7206:2.0:*:*:*:*:*:*:* Added CPE Configuration AND OR *cpe:2.3:o:tp-link:er7406_firmware:*:*:*:*:*:*:*:* versions up to (excluding) 1.3.4 OR cpe:2.3:h:tp-link:er7406:-:*:*:*:*:*:*:* Added CPE Configuration AND OR *cpe:2.3:o:tp-link:er707-m2_firmware:*:*:*:*:*:*:*:* versions up to (excluding) 1.4.4 OR cpe:2.3:h:tp-link:er707-m2:-:*:*:*:*:*:*:* Added CPE Configuration AND OR *cpe:2.3:o:tp-link:er7412-m2_firmware:*:*:*:*:*:*:*:* versions up to (excluding) 1.2.0 OR cpe:2.3:h:tp-link:er7412-m2:-:*:*:*:*:*:*:* Added CPE Configuration AND OR *cpe:2.3:o:tp-link:er8411_firmware:*:*:*:*:*:*:*:* versions up to (excluding) 1.4.1 OR cpe:2.3:h:tp-link:er8411:-:*:*:*:*:*:*:* Added CPE Configuration AND OR *cpe:2.3:o:tp-link:er706w_firmware:*:*:*:*:*:*:*:* versions up to (excluding) 1.2.11 OR cpe:2.3:h:tp-link:er706w:-:*:*:*:*:*:*:* Added CPE Configuration AND OR *cpe:2.3:o:tp-link:er706w-4g_firmware:*:*:*:*:*:*:*:* versions up to (excluding) 1.2.6 OR cpe:2.3:h:tp-link:er706w-4g:-:*:*:*:*:*:*:* Added CPE Configuration AND OR *cpe:2.3:o:tp-link:er706w-4g_firmware:*:*:*:*:*:*:*:* versions up to (excluding) 2.1.11 OR cpe:2.3:h:tp-link:er706w-4g:2.0:*:*:*:*:*:*:* Added CPE Configuration AND OR *cpe:2.3:o:tp-link:er706wp-4g_firmware:*:*:*:*:*:*:*:* versions up to (excluding) 1.1.11 OR cpe:2.3:h:tp-link:er706wp-4g:-:*:*:*:*:*:*:* Added CPE Configuration AND OR *cpe:2.3:o:tp-link:er703wp-4g-outdoor_firmware:*:*:*:*:*:*:*:* versions up to (excluding) 1.1.7 OR cpe:2.3:h:tp-link:er703wp-4g-outdoor:-:*:*:*:*:*:*:* Added CPE Configuration AND OR *cpe:2.3:o:tp-link:er603wp-4g-outdoor_firmware:*:*:*:*:*:*:*:* versions up to (excluding) 1.0.2 OR cpe:2.3:h:tp-link:er603wp-4g-outdoor:-:*:*:*:*:*:*:* Added CPE Configuration AND OR *cpe:2.3:o:tp-link:er701-5g-outdoor_firmware:*:*:*:*:*:*:*:* versions up to (excluding) 1.0.3 OR cpe:2.3:h:tp-link:er701-5g-outdoor:-:*:*:*:*:*:*:* Added CPE Configuration AND OR *cpe:2.3:o:tp-link:dr3220v-4g_firmware:*:*:*:*:*:*:*:* versions up to (excluding) 1.2.0 OR cpe:2.3:h:tp-link:dr3220v-4g:-:*:*:*:*:*:*:* Added CPE Configuration AND OR *cpe:2.3:o:tp-link:dr3650v_firmware:*:*:*:*:*:*:*:* versions up to (excluding) 1.2.0 OR cpe:2.3:h:tp-link:dr3650v:-:*:*:*:*:*:*:* Added CPE Configuration AND OR *cpe:2.3:o:tp-link:dr3650v-4g_firmware:*:*:*:*:*:*:*:* versions up to (excluding) 1.2.0 OR cpe:2.3:h:tp-link:dr3650v-4g:-:*:*:*:*:*:*:* Added CPE Configuration AND OR *cpe:2.3:o:tp-link:dr3150_firmware:*:*:*:*:*:*:*:* versions up to (excluding) 1.0.1 OR cpe:2.3:h:tp-link:dr3150:-:*:*:*:*:*:*:* Added Reference Type TPLink: https://mattg.systems/posts/cve-2026-19586/ Types: Exploit, Third Party Advisory Added Reference Type TPLink: https://www.omadanetworks.com/en/support/download/ Types: Product Added Reference Type TPLink: https://www.omadanetworks.com/us/support/download/ Types: Product Added Reference Type TPLink: https://www.tp-link.com/us/support/faq/5256/ Types: Vendor Advisory -
CVE Modified by f23511db-6c3e-4e32-a477-6aa17d310630
Aug. 28, 2026
Action Type Old Value New Value Added Reference https://mattg.systems/posts/cve-2026-19586/ 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/ Removed Reference https://www.omadanetworks.com/en/support/download/ Removed Reference https://www.omadanetworks.com/us/support/download/ Removed Reference https://www.tp-link.com/us/support/faq/5256/ -
CVE Modified by 134c704f-9b21-4f2e-91b3-4a467353bcc0
Aug. 21, 2026
Action Type Old Value New Value Changed 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'} {'id': 'CVE-2026-19586', 'role': 'CISA Coordinator', 'options': [{'exploitation': 'none'}, {'automatable': 'yes'}, {'technicalImpact': 'total'}], 'version': '2.0.3', 'timestamp': '2026-08-20T00:00:00+00:00'} -
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'}
EPSS is a daily estimate of the probability of exploitation activity
being observed over the next 30 days. Following chart shows the EPSS
score history of the vulnerability.