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CVE-2026-19586

Pre-Authentication OS Command Injection in Omada Gateways on OpenVPN Server in Omada Gateways

No known exploitation. EPSS puts it in the 93rd percentile. Fixed versions are out.

CVSS 3.19.8CriticalEPSS percentile93rd5.7% chance in 30 daysCISA KEVNot listedNo confirmed exploitation
No public exploit knownFix5 products5 fixed builds listed below

Published Updated Sources: CVE.org, NVD

NVD CVE.org

What to do

Find your product and version, then upgrade to the build on the right.

  • TP-Link Systems Inc. ER7212PC v2Affected: < 2.4.3 Build 20260722 Rel.40250Upgrade to: 2.4.3 Build 20260722 Rel.40250Stated by: CVE record
  • TP-Link Systems Inc. ER605 v2Affected: < 2.4.4 Build 20260630 Rel.14398Upgrade to: 2.4.4 Build 20260630 Rel.14398Stated by: CVE record
  • TP-Link Systems Inc. ER7206 v2Affected: < 2.3.5 Build 20260625 Rel.43136Upgrade to: 2.3.5 Build 20260625 Rel.43136Stated by: CVE record
  • TP-Link Systems Inc ER7406 v1Affected: < 1.3.4 Build 20260625 Rel.43136Upgrade to: 1.3.4 Build 20260625 Rel.43136Stated by: CVE record
  • TP-Link Systems Inc. ER707-M2 v1Affected: < 1.4.4 Build 20260625 Rel.43063Upgrade to: 1.4.4 Build 20260625 Rel.43063Stated by: CVE record

Versions as the sources state them. 32 more products have version data. Full version matrix after sign-in

Is your organisation exposed?Request an assessment to establish which checks fit your systems.

What it is

From the CVE record

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.

In plain language

No plain-language summary for this CVE yet.

Exploitation

Where each signal puts this CVE on the scale from published to confirmed exploited.

EPSS93rd
CISA KEV

Not in the catalog. CISA has not confirmed exploitation.

Public exploits

No public exploit or proof of concept found in the sources we track.

EPSS

5.7% chance of exploitation activity in the next 30 days, which ranks it in the 93rd percentile of scored CVEs.

Exploit Prediction Scoring System, FIRST.org. A probability, not a confirmation.

Lifecycle

9 events over 14 days, from the signal feeds we watch.

  1. Patch availablerecord updated
  2. Record updatedrecord updated
  3. Record updated
  4. Publishedweakness classified, att&ck mapped, record updated

Affected products

And 19 more affected products. See all after sign-in

Technical detail

CVSS 3.1 vector

Open in the CVSS calculator

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

Scored 9.8 by NVD.

How it is reached

  • Attack Vector NetworkExploitable remotely over the network without any special conditions
  • Attack Complexity LowNo special conditions — the attack can be reliably reproduced
  • Privileges Required NoneNo authentication required — anyone can exploit this
  • User Interaction NoneNo user interaction needed — fully automated exploitation

Scope

  • Scope UnchangedImpact is limited to the vulnerable component itself

Impact if exploited

  • Confidentiality HighTotal information disclosure — all data in the component is compromised
  • Integrity HighTotal loss of integrity — attacker can modify any data in the component
  • Availability HighTotal denial of service — the component is completely unavailable

Weaknesses

ATT&CK techniques

Mapped from the weaknesses above (CWE to ATT&CK), not observed in attacks.

Sources

References in the record

And 1 more reference. See all after sign-in

Watch the software you run.

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We'll flag the next CVE, public exploit or patch for Er7212pc Firmware, not every advisory.