CVE-2026-19683

Summary

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.

Affected Software

VendorProductVersion RangeStatus
TP-Link Systems Inc.ER7212PC v20 < 2.4.3 Build 20260722 Rel.40250affected
TP-Link Systems Inc.ER605 v20 < 2.4.4 Build 20260630 Rel.14398affected
TP-Link Systems Inc.ER7206 v20 < 2.3.5 Build 20260625 Rel.43136affected
TP-Link Systems IncER7406 v10 < 1.3.4 Build 20260625 Rel.43136affected
TP-Link Systems Inc.ER707-M2 v10 < 1.4.4 Build 20260625 Rel.43063affected
TP-Link Systems IncER7412-M2 v10 < 1.2.0 Build 20260630 Rel.82947affected
TP-Link Systems Inc.ER8411 v10 < 1.4.1 Build 20260708 Rel.64832affected
TP-Link Systems Inc.ER706W v10 < 1.2.11 Build 20260723 Rel.41567affected
TP-Link Systems Inc.v10 < 1.2.6 Build 20260723 Rel.41321affected
TP-Link Systems Inc.ER706W-4G v20 < 2.1.11 Build 20260723 Rel.41624affected
TP-Link Systems Inc.ER706WP-4G v10 < 1.1.11 Build 20260723 Rel.41624affected
TP-Link Systems Inc.ER703WP-4G-Outdoor v10 < 1.1.7 Build 20260723 Rel.41712affected
TP-Link Systems Inc.DR3220v-4G v10 < 1.2.0 Build 20260630 Rel.82652affected
TP-Link Systems Inc.DR3650v v10 < 1.2.0 Build 20260630 Rel.83311affected
TP-Link Systems Inc.DR3650v-4G v10 < 1.2.0 Build 20260630 Rel.83347affected
TP-Link Systems Inc.ER603WP-4G-Outdoor v10 < 1.0.2 Build 20260723 Rel.43271affected
TP-Link Systems Inc.DR3150 v10 < 1.0.1 Build 20260722 Rel.16854affected
TP-Link Systems Inc.ER701-5G-Outdoor v10 < 1.0.3 Build 20260723 Rel.40931affected
TP-Link Systems Inc.ER605W v20 < 2.0.4 Build 20260723 Rel.43763affected

Weaknesses

  • CWE-319: CWE-319 Cleartext transmission of sensitive information

ADP Enrichment

CISA ADP Vulnrichment

  • SSVC:
  • Exploitation: none
    • Automatable: no
    • Technical Impact: partial

References