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NVD / CVE Program· CNA TPLink

CVE-2026-19586: Pre-Authentication OS Command Injection in Omada Gateways on OpenVPN Server in Omada Gateways

Noroxi assessment

Priority: Monitor (action score 39/100)

  • Public proof-of-concept code exists (GitHub); there is no record of exploitation in the wild.
  • Probability of exploitation in the next 30 days: 5.7% (FIRST EPSS); higher than 93% of all records.
  • Anyone who can reach it over the internet can trigger it. No account or password is required. No user action is required. No special conditions are required; it is repeatable.
  • According to CISA the attack is automatable: targets can be found by mass scanning.
  • According to the record, no fixed version is available yet.

Low priority for now. Update when a fix is released; follow the vendor's advisory.

Generated automatically from the record's data: CVSS (NVD and CNA), CISA KEV and SSVC, FIRST EPSS, exploit sources, fixed versions. How we calculate it

Primary sources: NVD · CVE.org · FIRST EPSS

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.

CriticalCVSS 9.3 · v4.0—Proof of concept No fix recorded
Published
Aug 20, 2026
Updated
Oct 26, 2026
EPSS
5.7% · 93th percentile

Report tools

JSON

Action score

39

Monitor

Low priority for now.

CVSS
37 / 40 · 9.3 / 10
CISA KEV
0 / 30 · Not listed
EPSS
2 / 30 · 5.7%

CISA SSVC decision

Exploitation
none
Automatable
yes
Technical impact
total

Vulnrichment: CISA's decision-tree inputs.

CNA vs NVD score

NVD
—
CNA · TPLink
9.3
NVD has not scored this yet; the score shown is the CNA’s.

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

The score given by the assigning authority versus NVD’s independent score. A gap means the severity is contested.

Get told when this record changes

  • Not in KEV: no record of exploitation in the wild
  • Proof of concept exists, no weaponized module
  • No fixed version yet

If any of these changes, we'll tell you in the daily email digest.

Follow CVE-2026-19586

When you'll hear from us

  • when it enters CISA KEV
  • when exploit code appears or is weaponized
  • when the record is updated (including a fixed version)
  • when EPSS rises 20 points in a week

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Noroxi analysis

What does it mean in your environment?

The assessment above is generated automatically from the record's data; it doesn't know your environment. Our team verifies on your systems whether this vulnerability is actually exploitable and which mitigation is enough.

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Affected systems

Is your version affected?

Pick the product and type the version you run. It's compared with this record's version ranges in your browser; the version isn't sent anywhere.

VendorProduct
tp-linker7212pc firmware
tp-linker7212pc
tp-linker605 firmware
tp-linker605
tp-linker605w firmware
tp-linker605w
tp-linker7206 firmware
tp-linker7206
tp-linker7406 firmware
tp-linker7406
tp-linker707-m2 firmware
tp-linker707-m2

and 24 more

Affected versions

NVD version ranges (for catalog products). Add the product to your stack with a version and matching uses these.

  • tp-link dr3150 firmwarebefore 1.0.1
  • tp-link dr3220v-4g firmwarebefore 1.2.0
  • tp-link dr3650v firmwarebefore 1.2.0
  • tp-link dr3650v-4g firmwarebefore 1.2.0
  • tp-link er603wp-4g-outdoor firmwarebefore 1.0.2
  • tp-link er605 firmwarebefore 2.4.4
  • tp-link er605w firmwarebefore 2.0.4
  • tp-link er701-5g-outdoor firmwarebefore 1.0.3
  • tp-link er703wp-4g-outdoor firmwarebefore 1.1.7
  • tp-link er706w firmwarebefore 1.2.11
  • tp-link er706w-4g firmwarebefore 1.2.6
  • tp-link er706w-4g firmwarebefore 2.1.11
  • tp-link er706wp-4g firmwarebefore 1.1.11
  • tp-link er707-m2 firmwarebefore 1.4.4
  • tp-link er7206 firmwarebefore 2.3.5
  • tp-link er7212pc firmwarebefore 2.4.3
  • tp-link er7406 firmwarebefore 1.3.4
  • tp-link er7412-m2 firmwarebefore 1.2.0
  • tp-link er8411 firmwarebefore 1.4.1

Versions reported by the vendor

Affected version ranges reported by the assigning authority (TPLink). Independent of NVD's CPE analysis and usually ahead of it.

  • TP-Link Systems Inc ER7406 v1

    • before 1.3.4 Build 20260625 Rel.43136affected

  • TP-Link Systems Inc ER7412-M2 v1

    • before 1.2.0 Build 20260630 Rel.82947affected

  • TP-Link Systems Inc. DR3150 v1

    • before 1.0.1 Build 20260722 Rel.16854affected

  • TP-Link Systems Inc. DR3220v-4G v1

    • before 1.2.0 Build 20260630 Rel.82652affected

  • TP-Link Systems Inc. DR3650v v1

    • before 1.2.0 Build 20260630 Rel.83311affected

  • TP-Link Systems Inc. DR3650v-4G v1

    • before 1.2.0 Build 20260630 Rel.83347affected

  • TP-Link Systems Inc. ER603WP-4G-Outdoor v1

    • before 1.0.2 Build 20260723 Rel.43271affected

  • TP-Link Systems Inc. ER605 v2

    • before 2.4.4 Build 20260630 Rel.14398affected

  • TP-Link Systems Inc. ER605W v2

    • before 2.0.4 Build 20260723 Rel.43763affected

  • TP-Link Systems Inc. ER701-5G-Outdoor v1

    • before 1.0.3 Build 20260723 Rel.40931affected

  • TP-Link Systems Inc. ER703WP-4G-Outdoor v1

    • before 1.1.7 Build 20260723 Rel.41712affected

  • TP-Link Systems Inc. ER706W v1

    • before 1.2.11 Build 20260723 Rel.41567affected

Same product

tp-link: all records

Other highest-scoring records for the same primary product.

  • CVE-2026-19683Unencrypted Credential Transmission in Omada Gateway Dynamic DNS Authentication in Omada Gateways
    25Monitor
  • CVE-2026-9033Unauthenticated Captive Portal Session Termination and Forced Logout in Omada Gateways
    24Monitor

Remediation

Which version to upgrade to

Fix versions compiled from the vendor, package registries and Microsoft. Verify the vendor's note before upgrading.

No fix version is recorded for this entry. Check the references for vendor advisories.

Exploit status

Proof of concept available

A public proof of concept or detection signature exists. Exploit knowledge is out there; don't delay patching.

Evidence

  • Proof-of-concept repository on GitHub ×1

Noroxi does not host or link to exploit code. Metasploit module names and Nuclei template ids are shown (names, not code); Exploit-DB entries and PoC repositories are given as counts only.

Public exploit evidence
SourceKindDate
Proof-of-concept repository on GitHubstars:32026-08-21

Research context

For pentesters and researchers: attack profile, score disagreement, timeline, patch commits, credits, variant and chain candidates, bug bounty scope. All derived from existing data; no exploit code.

Timeline

From publication to today: proof of concept, Metasploit module, CISA KEV and fix record. Dates are as reported by the sources.

  1. Published
  2. First PoCsame day
  3. TodayNov 6, 2026+77 d
EPSS, last 120 days+1% in 7 days

FIRST EPSS daily score; only changes of 0.01 or more are recorded (step chart).

Patch and commit links

Commit, PR and diff links among the references. A starting point for patch-diffing and variant hunting; fixes, not exploits.

No commit or PR link among the references.

Credits

All researchers

Finders, reporters and analysts named in the CNA record. Click a name for that researcher’s other records.

Variant candidates

Same product, same weakness class, within 18 months. If the patch missed the root cause, the sibling bug is here.

No nightly-computed relations.

Chain candidates

An authentication bypass and a privilege-requiring bug in the same product, published close together: combined they may become an unauthenticated path.

—

Bug bounty scope

No known public program.

Source: bounty-targets-data (public HackerOne, Bugcrowd, Intigriti, YesWeHack listings).

Technical details

Attack conditions

  • Anyone who can reach it over the internet can trigger it.
  • No account or password is required.
  • No user action is required.
  • No special conditions are required; it is repeatable.

If successful

Confidentiality
Integrity
Availability
Attack vector
Network
Attack complexity
Low
Privileges required
None
User interaction
None
Scope
X

Weakness class (CWE)

CWE-78 · Improper Neutralization of Special Elements used in an OS Command ('OS Command Injection')

CVSS 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

nvd-secondary

Root cause

User input is inserted as text into a shell command. The shell may interpret special characters in the input as part of the command.

The bug in code

The whole CWE-78 class

A representative example of this vulnerability class. Not the vendor's source code; it shows the faulty pattern and its fix.

Vulnerable

ts
const host = req.body.host;exec("ping -c 1 " + host, onResult);

Fixed

ts
const host = req.body.host;if (!/^[a-z0-9.-]{1,253}$/i.test(host)) return res.sendStatus(400);execFile("ping", ["-c", "1", host], onResult);

Attack context

MITRE CAPEC attack patterns and ATT&CK techniques for this weakness class (CWE). A starting point for detection rules and threat hunting.

ATT&CK techniques

—

Change log

No changes recorded on tracked fields yet. Score, KEV, exploit maturity and fix status changes appear here.

References

Show all references (2 more)

Vendor advisories and official records. Exploit/PoC links are deliberately left out.

All records