CVE-2026-19586 tp-link · er7212pc firmware

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

Vulnerability at a glance

Severity, exploitation likelihood & attack requirements

CVSS v4.0 severity
9.3Critical
EPSS · exploitation likelihood
5.724% Probability within 30 daysPercentile 93.0
EPSS trend
Up 0.027 pp Since 2026-10-19 · percentage points
Known exploitation
Not in KEV CISA KEV catalog Absence does not establish safety
Attack vector
NetworkRemotely reachable
Attack complexity
LowFewer obstacles to exploitation
Privileges required
NoneNo authentication required
User interaction
NoneNo user action needed
Exploit availability & maturity
Not scored Exploit reference available No explicit exploit maturity assessment View exploit evidence
How to read the colors & trend
Higher exposureElevatedModerateLower exposureUnknown / unassessed

CVSS colors follow its reported severity. Attack-factor colors describe each requirement, not an overall risk rating. Gray also covers absence from KEV; absence does not establish safety.

EPSS display bands: below 1% blue, 1–10% amber, 10–50% orange, 50% and above red. These are presentation bands, not FIRST severity categories. The trend compares daily EPSS probabilities, not percentile ranks; “pp” means percentage points. The sparkline shows relative movement, with its vertical scale fitted to the observed scores.

Already protected by existing Atomicorp rules No new CVE-specific rule required.

Atomicorp ModSecurity protection

Protected by Atomicorp rules

Atomicorp ModSecurity rules block attacks exploiting this vulnerability. Keep your rules current.

By targeting underlying attack techniques and CWE weakness classes, existing rules can protect against newly disclosed vulnerabilities. Rule changes are regression-tested against attack and false-positive corpora.

10 rules identified Verified 2026-09-06 View rules & research details →

WAF protection does not change the CVSS or EPSS score. Keep your software patched and your Atomicorp rules current.

CISA SSVC assessment

CISA ADP · Assessed 2026-08-20 · SSVC 2.0.3

Exploitation
None reported
Automatable
Yes
Technical Impact
Total

Stakeholder-Specific Vulnerability Categorization records CISA’s assessment of exploitation, automation, and technical impact. “None reported” reflects the assessment date; it does not establish that no exploit exists. View SSVC source details.

On this page

CVE Details

Technical vulnerability details · CVSS assessments, exploit evidence & CPE data

CVSS assessments

CVSS v4.0 · TPLink

  • Base score: 9.3
  • Base severity: CRITICAL
  • Assessment type: Secondary
  • Source identifier: f23511db-6c3e-4e32-a477-6aa17d310630
  • Full vector: 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
    • Attack vector: Network
    • Attack complexity: Low
    • Attack requirements: None
    • Privileges required: None
    • User interaction: None
    • Vulnerable-system confidentiality: High
    • Vulnerable-system integrity: High
    • Vulnerable-system availability: High
    • Subsequent-system confidentiality: Low
    • Subsequent-system integrity: Low
    • Subsequent-system availability: Low
    • Safety: Not defined
  • Exploit maturity: Not scored

CVSS v3.1 · NVD

  • Base score: 9.8
  • Base severity: CRITICAL
  • Exploitability subscore: 3.9
  • Impact subscore: 5.9
  • Assessment type: Primary
  • Source identifier: nvd@nist.gov
  • Full vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
    • Attack vector: Network
    • Attack complexity: Low
    • Privileges required: None
    • User interaction: None
    • Scope: Unchanged
    • Confidentiality impact: High
    • Integrity impact: High
    • Availability impact: High
  • Exploit maturity: Not scored

Exploitability and impact subscores describe the vulnerability’s technical characteristics. Exploit maturity describes the reported state of exploitation; these are separate measures.

Assessment source: NVD record · CVE record

CISA SSVC assessments

These are CISA’s published decision points at the assessment time. They are not a complete organization-specific prioritization decision.

  • Provider: CISA ADP

  • Provider identifier: 134c704f-9b21-4f2e-91b3-4a467353bcc0

  • SSVC version: 2.0.3

  • Role: CISA Coordinator

  • Assessment timestamp: 2026-08-20T18:58:10.583443Z

  • Exploitation: none

  • Automatable: yes

  • Technical Impact: total

  • Source: CISA ADP in the CVE record

  • Provider: CISA ADP

  • Provider identifier: 134c704f-9b21-4f2e-91b3-4a467353bcc0

  • SSVC version: 2.0.3

  • Role: CISA Coordinator

  • Assessment timestamp: 2026-08-20T00:00:00+00:00

  • Exploitation: none

  • Automatable: yes

  • Technical Impact: total

  • Source: CISA ADP in the CVE record

Exploit references

The CVE source data tags these references as exploits. A reference alone does not establish reliability or active exploitation.

Vulnerable CPE configurations

  • cpe:2.3:o:tp-link:er7212pc_firmware:*:*:*:*:*:*:*:*
    • Version end (exclusive): 2.4.3
    • NVD match criteria ID: 7D4F7E2D-BC8F-473D-938B-8E907538FB84
  • cpe:2.3:o:tp-link:er605_firmware:*:*:*:*:*:*:*:*
    • Version end (exclusive): 2.4.4
    • NVD match criteria ID: D7DE29DB-20CA-4C32-A050-22C0C208683D
  • cpe:2.3:o:tp-link:er605w_firmware:*:*:*:*:*:*:*:*
    • Version end (exclusive): 2.0.4
    • NVD match criteria ID: 6BEB928F-A260-4ADC-8AE7-EA118D6CBA4E
  • cpe:2.3:o:tp-link:er7206_firmware:*:*:*:*:*:*:*:*
    • Version end (exclusive): 2.3.5
    • NVD match criteria ID: 9FEBEB59-E7F4-45CE-A4FF-01169FB6D7A4
  • cpe:2.3:o:tp-link:er7406_firmware:*:*:*:*:*:*:*:*
    • Version end (exclusive): 1.3.4
    • NVD match criteria ID: 36C3A9CA-B374-4B30-8647-867DCBDA888F
  • cpe:2.3:o:tp-link:er707-m2_firmware:*:*:*:*:*:*:*:*
    • Version end (exclusive): 1.4.4
    • NVD match criteria ID: 5C8E5FC5-FB02-4884-8561-16462A7FB015
  • cpe:2.3:o:tp-link:er7412-m2_firmware:*:*:*:*:*:*:*:*
    • Version end (exclusive): 1.2.0
    • NVD match criteria ID: 52DFB291-70BB-49C1-B50F-E084CDCE56D6
  • cpe:2.3:o:tp-link:er8411_firmware:*:*:*:*:*:*:*:*
    • Version end (exclusive): 1.4.1
    • NVD match criteria ID: 14F8B834-3A2F-4B8B-BF3C-4C915F9C91B2
  • cpe:2.3:o:tp-link:er706w_firmware:*:*:*:*:*:*:*:*
    • Version end (exclusive): 1.2.11
    • NVD match criteria ID: 1DC2E6EB-47E1-4B3F-AE07-6E9C1120885E
  • cpe:2.3:o:tp-link:er706w-4g_firmware:*:*:*:*:*:*:*:*
    • Version end (exclusive): 1.2.6
    • NVD match criteria ID: 41F765B0-E24B-4EED-AC37-B54638DFBD3F
  • cpe:2.3:o:tp-link:er706w-4g_firmware:*:*:*:*:*:*:*:*
    • Version end (exclusive): 2.1.11
    • NVD match criteria ID: 2C596A89-C9E9-4F8E-BD9F-6B807E3D568E
  • cpe:2.3:o:tp-link:er706wp-4g_firmware:*:*:*:*:*:*:*:*
    • Version end (exclusive): 1.1.11
    • NVD match criteria ID: 8886DEC9-65FE-4D88-B829-7082B7F27B8E
  • cpe:2.3:o:tp-link:er703wp-4g-outdoor_firmware:*:*:*:*:*:*:*:*
    • Version end (exclusive): 1.1.7
    • NVD match criteria ID: FFB8FCED-5F12-4631-857F-6F713558CA67
  • cpe:2.3:o:tp-link:er603wp-4g-outdoor_firmware:*:*:*:*:*:*:*:*
    • Version end (exclusive): 1.0.2
    • NVD match criteria ID: C516C8C6-29EB-4614-B8B3-C1D15AED69E8
  • cpe:2.3:o:tp-link:er701-5g-outdoor_firmware:*:*:*:*:*:*:*:*
    • Version end (exclusive): 1.0.3
    • NVD match criteria ID: F5D2B103-3A11-4F8D-B94E-E9394BF39A35
  • cpe:2.3:o:tp-link:dr3220v-4g_firmware:*:*:*:*:*:*:*:*
    • Version end (exclusive): 1.2.0
    • NVD match criteria ID: 8F715148-236F-4EA0-9389-39AC93E3217C
  • cpe:2.3:o:tp-link:dr3650v_firmware:*:*:*:*:*:*:*:*
    • Version end (exclusive): 1.2.0
    • NVD match criteria ID: 16677C43-4338-4444-BBA6-C3A05AF167E5
  • cpe:2.3:o:tp-link:dr3650v-4g_firmware:*:*:*:*:*:*:*:*
    • Version end (exclusive): 1.2.0
    • NVD match criteria ID: 178A4ACF-15AB-4BAD-8EE9-1AB660220489
  • cpe:2.3:o:tp-link:dr3150_firmware:*:*:*:*:*:*:*:*
    • Version end (exclusive): 1.0.1
    • NVD match criteria ID: 36033FDC-3905-4958-9B0E-2A834A4CDF80

Vulnerability 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.

  1. Maintain the observed Atomicorp protections. Keep your Atomicorp commercial rules current and confirm that the selected observed rules (340014 , 340023 , 340029 , 344360 , 344361 , 344363 , 344364 , 344366 , 344370 , 393655 ) have not been locally disabled. Atomicorp commercial rules are enabled by default. If you use Atomic WAF, review the applicable policy and rule settings.

  2. Apply the vendor’s remediation. WAF protection is defense in depth and does not replace upgrading or following the affected vendor’s guidance.

    • Affected versions: TP-Link Systems Inc. ER7212PC v2 versions earlier than 2.4.3 Build 20260722 Rel.40250.
    • Affected versions: TP-Link Systems Inc. ER605 v2 versions earlier than 2.4.4 Build 20260630 Rel.14398.
    • Affected versions: TP-Link Systems Inc. ER7206 v2 versions earlier than 2.3.5 Build 20260625 Rel.43136.
    • Affected versions: TP-Link Systems Inc ER7406 v1 versions earlier than 1.3.4 Build 20260625 Rel.43136.
    • Affected versions: TP-Link Systems Inc. ER707-M2 v1 versions earlier than 1.4.4 Build 20260625 Rel.43063.
    • Affected versions: TP-Link Systems Inc ER7412-M2 v1 versions earlier than 1.2.0 Build 20260630 Rel.82947.
    • Affected versions: TP-Link Systems Inc. ER8411 v1 versions earlier than 1.4.1 Build 20260708 Rel.64832.
    • Affected versions: TP-Link Systems Inc. ER706W v1 versions earlier than 1.2.11 Build 20260723 Rel.41567.
    • Affected versions: TP-Link Systems Inc. v1 versions earlier than 1.2.6 Build 20260723 Rel.41321.
    • Affected versions: TP-Link Systems Inc. ER706W-4G v2 versions earlier than 2.1.11 Build 20260723 Rel.41624.
    • Affected versions: TP-Link Systems Inc. ER706WP-4G v1 versions earlier than 1.1.11 Build 20260723 Rel.41624.
    • Affected versions: TP-Link Systems Inc. ER703WP-4G-Outdoor v1 versions earlier than 1.1.7 Build 20260723 Rel.41712.
    • Affected versions: TP-Link Systems Inc. DR3220v-4G v1 versions earlier than 1.2.0 Build 20260630 Rel.82652.
    • Affected versions: TP-Link Systems Inc. DR3650v v1 versions earlier than 1.2.0 Build 20260630 Rel.83311.
    • Affected versions: TP-Link Systems Inc. DR3650v-4G v1 versions earlier than 1.2.0 Build 20260630 Rel.83347.
    • Affected versions: TP-Link Systems Inc. ER603WP-4G-Outdoor v1 versions earlier than 1.0.2 Build 20260723 Rel.43271.
    • Affected versions: TP-Link Systems Inc. DR3150 v1 versions earlier than 1.0.1 Build 20260722 Rel.16854.
    • Affected versions: TP-Link Systems Inc. ER701-5G-Outdoor v1 versions earlier than 1.0.3 Build 20260723 Rel.40931.
    • Affected versions: TP-Link Systems Inc. ER605W v2 versions earlier than 2.0.4 Build 20260723 Rel.43763.
    • Recommended upgrade: Upgrade TP-Link Systems Inc. ER7212PC v2 to 2.4.3 Build 20260722 Rel.40250 or later.
    • Recommended upgrade: Upgrade TP-Link Systems Inc. ER605 v2 to 2.4.4 Build 20260630 Rel.14398 or later.
    • Recommended upgrade: Upgrade TP-Link Systems Inc. ER7206 v2 to 2.3.5 Build 20260625 Rel.43136 or later.
    • Recommended upgrade: Upgrade TP-Link Systems Inc ER7406 v1 to 1.3.4 Build 20260625 Rel.43136 or later.
    • Recommended upgrade: Upgrade TP-Link Systems Inc. ER707-M2 v1 to 1.4.4 Build 20260625 Rel.43063 or later.
    • Recommended upgrade: Upgrade TP-Link Systems Inc ER7412-M2 v1 to 1.2.0 Build 20260630 Rel.82947 or later.
    • Recommended upgrade: Upgrade TP-Link Systems Inc. ER8411 v1 to 1.4.1 Build 20260708 Rel.64832 or later.
    • Recommended upgrade: Upgrade TP-Link Systems Inc. ER706W v1 to 1.2.11 Build 20260723 Rel.41567 or later.
    • Recommended upgrade: Upgrade TP-Link Systems Inc. v1 to 1.2.6 Build 20260723 Rel.41321 or later.
    • Recommended upgrade: Upgrade TP-Link Systems Inc. ER706W-4G v2 to 2.1.11 Build 20260723 Rel.41624 or later.
    • Recommended upgrade: Upgrade TP-Link Systems Inc. ER706WP-4G v1 to 1.1.11 Build 20260723 Rel.41624 or later.
    • Recommended upgrade: Upgrade TP-Link Systems Inc. ER703WP-4G-Outdoor v1 to 1.1.7 Build 20260723 Rel.41712 or later.
    • Recommended upgrade: Upgrade TP-Link Systems Inc. DR3220v-4G v1 to 1.2.0 Build 20260630 Rel.82652 or later.
    • Recommended upgrade: Upgrade TP-Link Systems Inc. DR3650v v1 to 1.2.0 Build 20260630 Rel.83311 or later.
    • Recommended upgrade: Upgrade TP-Link Systems Inc. DR3650v-4G v1 to 1.2.0 Build 20260630 Rel.83347 or later.
    • Recommended upgrade: Upgrade TP-Link Systems Inc. ER603WP-4G-Outdoor v1 to 1.0.2 Build 20260723 Rel.43271 or later.
    • Recommended upgrade: Upgrade TP-Link Systems Inc. DR3150 v1 to 1.0.1 Build 20260722 Rel.16854 or later.
    • Recommended upgrade: Upgrade TP-Link Systems Inc. ER701-5G-Outdoor v1 to 1.0.3 Build 20260723 Rel.40931 or later.
    • Recommended upgrade: Upgrade TP-Link Systems Inc. ER605W v2 to 2.0.4 Build 20260723 Rel.43763 or later.

  3. Validate after changes. Confirm rule updates are current, review WAF events for the affected application, and test application behavior after vendor upgrades, mitigations, or local policy changes.

Research Notes

Atomicorp WAF protections are designed around attack techniques and exploit behaviors, allowing existing protections to apply across multiple vulnerabilities without requiring a unique rule for every CVE.

Public Vulnerability References

Test or Research Source

  • Source: Atomicorp AI Research Framework
  • Tags: cve, derived, rce, waf-probe

Research Note Context

This research note documents exploit-technique analysis associated with this vulnerability and references Atomicorp WAF protections observed during engineering review, testing, or validation activities.

Atomicorp security controls are generally designed to identify and mitigate attack techniques and exploit behaviors rather than individual CVE identifiers. As a result, protections developed for one vulnerability may also apply to related attack variants and future vulnerabilities using similar techniques.

Learn More

Atomicorp develops commercially supported security technologies for web applications, servers, endpoints, workloads, and legacy enterprise platforms.

Organizations interested in protecting systems against exploit techniques associated with vulnerabilities such as this one can learn more about:

  • Atomic ModSecurity Rules: commercially maintained WAF rules for ModSecurity deployments, including protections for web attacks, bots, scanners, malware, exploitation attempts, and emerging vulnerability classes.
  • Atomic WAF: an enterprise web application firewall with Atomicorp rules, centralized management, reporting, authentication controls, and operational tooling.
  • Atomic ModSecurity Integrator: a special licensing option for MSPs, MSSPs, OEMs, VARs, reverse proxy providers, and other integrators who want to incorporate Atomicorp ModSecurity rule technology into their own products or services.
  • Atomic OSSEC: an enterprise OSSEC-based intrusion detection, compliance, and security monitoring platform.
  • Atomic Protector: workload protection for Linux, web, cloud, data center, and hybrid environments.

For additional information, product evaluations, or technical discussions, visit https://www.atomicorp.com/ or https://modsecurity.io/ .