CVE-2026-19683: TP-Link DR3150 Firmware

High severity, CVSS 7.4. EPSS: 0.3% chance of exploitation in the next 30 days.

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 products

  • TP-Link DR3150 Firmware: before 1.0.1 (fixed in 1.0.1)
  • TP-Link DR3220V-4g Firmware: before 1.2.0 (fixed in 1.2.0)
  • TP-Link DR3650V-4g Firmware: before 1.2.0 (fixed in 1.2.0)
  • TP-Link DR3650V Firmware: before 1.2.0 (fixed in 1.2.0)
  • TP-Link ER603WP-4g-Outdoor Firmware: before 1.0.2 (fixed in 1.0.2)
  • TP-Link ER605 Firmware: before 2.4.4 (fixed in 2.4.4)
  • TP-Link ER605W Firmware: before 2.0.4 (fixed in 2.0.4)
  • TP-Link ER701-5g-Outdoor Firmware: before 1.0.3 (fixed in 1.0.3)
  • TP-Link ER703WP-4g-Outdoor Firmware: before 1.1.7 (fixed in 1.1.7)
  • TP-Link ER706W-4g Firmware: before 1.2.6 (fixed in 1.2.6); before 2.1.11 (fixed in 2.1.11)
  • TP-Link ER706W Firmware: before 1.2.11 (fixed in 1.2.11)
  • TP-Link ER706WP-4g Firmware: before 1.1.11 (fixed in 1.1.11)
  • TP-Link ER707-m2 Firmware: before 1.4.4 (fixed in 1.4.4)
  • TP-Link ER7206 Firmware: before 2.3.5 (fixed in 2.3.5)
  • TP-Link ER7212PC Firmware: before 2.4.3 (fixed in 2.4.3)
  • TP-Link ER7406 Firmware: before 1.3.4 (fixed in 1.3.4)
  • TP-Link ER7412-m2 Firmware: before 1.2.0 (fixed in 1.2.0)
  • TP-Link ER8411 Firmware: before 1.4.1 (fixed in 1.4.1)

Published 2026-08-20. Last modified 2026-09-08.