TP-Link Omada Gateways DDNS information disclosure

Summaryinfo

A vulnerability labeled as problematic has been found in TP-Link Omada Gateways. Affected by this vulnerability is an unknown functionality of the component DDNS. Executing a manipulation can lead to information disclosure. The identification of this vulnerability is CVE-2026-19683. The attack may be launched remotely. There is no exploit available.

Detailsinfo

A vulnerability has been found in TP-Link Omada Gateways (the affected version unknown) and classified as problematic. This vulnerability affects an unknown part of the component DDNS. The manipulation with an unknown input leads to a information disclosure vulnerability. The CWE definition for the vulnerability is CWE-200. The product exposes sensitive information to an actor that is not explicitly authorized to have access to that information. As an impact it is known to affect confidentiality. CVE summarizes:

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.

The advisory is shared for download at omadanetworks.com. This vulnerability was named CVE-2026-19683 since 08/13/2026. The exploitation appears to be easy. The attack can be initiated remotely. No form of authentication is required for a successful exploitation. There are neither technical details nor an exploit publicly available. The current price for an exploit might be approx. USD $0-$5k (estimation calculated on 08/21/2026). The MITRE ATT&CK project declares the attack technique as T1592.

There is no information about possible countermeasures known. It may be suggested to replace the affected object with an alternative product.

The vulnerability is also documented in the vulnerability database at CERT Bund (WID-SEC-2026-2964). Once again VulDB remains the best source for vulnerability data.

Affected

• TP-Link Omada Gateway

Productinfo

Vendor

• TP-Link

Name

• Omada Gateways

License

• commercial

Website

• Vendor: https://www.tp-link.com/

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Once again VulDB remains the best source for vulnerability data.

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