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CVE-2026-19683· NVD / CVE Program· CNA TPLink

Unencrypted Credential Transmission in Omada Gateway Dynamic DNS Authentication in Omada Gateways

A vulnerability exists in the Dynamic DNS (DDNS) functionality of TP-Link Omada Gateways. During communication with a third-party DDNS service, authentication credentials are transmitted over an unencrypted channel. An attacker who can observe or manipulate traffic between an affected device and the DDNS service may obtain sensitive authentication information or interfere with DDNS update operations. Exploitation requires DDNS to be configured, communication with an external DDNS service, and attacker visibility or control of the relevant network path.  Successful exploitation may result in disclosure of DDNS account credentials, unauthorized access to DDNS management functionality, or modification of DNS records associated with the affected deployment.

MediumCVSS 6.3 · v4.0—No exploit No fix recorded
Published
Aug 20, 2026
Updated
Sep 8, 2026
EPSS
0.3% · 15th percentile
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Action score

25

Monitor

Low priority for now.

CVSS
25 / 40 · 6.3 / 10
CISA KEV
0 / 30 · Not listed
EPSS
0 / 30 · 0.3%

CISA SSVC decision

Exploitation
none
Automatable
no
Technical impact
partial

Vulnrichment: CISA's decision-tree inputs.

CNA vs NVD score

NVD
—
CNA · TPLink
6.3
NVD has not scored this yet; the score shown is the CNA’s.

CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:L/VI:L/VA:N/SC:N/SI:N/SA:N

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

Affected systems

VendorProduct
tp-linker7212pc firmware
tp-linker7212pc
tp-linker605 firmware
tp-linker605
tp-linker7206 firmware
tp-linker7206
tp-linker7406 firmware
tp-linker7406
tp-linker707-m2 firmware
tp-linker707-m2
tp-linker7412-m2 firmware
tp-linker7412-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 2.1.11
  • tp-link er706w-4g firmwarebefore 1.2.6
  • 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-2026-19586Pre-Authentication OS Command Injection in Omada Gateways on OpenVPN Server in Omada Gateways
    39Monitor
  • 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

No known public exploit

No public exploit has been observed yet. That doesn't mean you're safe, only that the bar is a little higher.

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.

No dated events beyond publication.

EPSS, last 120 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.

No credits in the CNA record.

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-319 · Cleartext Transmission of Sensitive Information

CVSS vector

CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:L/VI:L/VA:N/SC:N/SI:N/SA:N/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

Attack context

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

Noroxi analysis

No Noroxi analysis for this record yet

We don't hand-write analysis for all 385,000+ vulnerabilities; that wouldn't be honest. For notable, high-impact vulnerabilities our team writes the mechanism, detection and remediation steps.

We use this product, ask for help

Change log

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

References

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

All records