CVE-2026-19683: CWE-319 Cleartext transmission of sensitive information in TP-Link Systems Inc. ER7212PC v2
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.
AI Analysis
Technical Summary
This vulnerability (CVE-2026-19683) affects the DDNS feature of TP-Link Omada Gateways ER7212PC v2. Authentication credentials are transmitted in cleartext when the device communicates with external DDNS services, allowing an attacker who can observe or manipulate the network traffic to capture these credentials or disrupt DDNS updates. Successful exploitation could lead to disclosure of DDNS account credentials, unauthorized access to DDNS management, or modification of DNS records. The vulnerability requires DDNS configuration and attacker network access. No patch or official remediation has been disclosed as of the publication date.
Potential Impact
The vulnerability allows attackers with network visibility or control to intercept sensitive DDNS authentication credentials and potentially gain unauthorized access to DDNS management functions. This could result in unauthorized modification of DNS records, impacting the integrity and availability of DNS services associated with the affected deployment.
Mitigation Recommendations
Patch status is not yet confirmed — check the vendor advisory for current remediation guidance. Until an official fix is available, users should consider disabling DDNS functionality if not required or ensure that network paths between the device and DDNS service are secured to prevent interception. Monitor vendor communications for updates on remediation.
CVE-2026-19683: CWE-319 Cleartext transmission of sensitive information in TP-Link Systems Inc. ER7212PC v2
Description
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.
CVSS v4.0
Score 6.3medium
Weaknesses
AI-Powered Analysis
Machine-generated threat intelligence
Technical Analysis
This vulnerability (CVE-2026-19683) affects the DDNS feature of TP-Link Omada Gateways ER7212PC v2. Authentication credentials are transmitted in cleartext when the device communicates with external DDNS services, allowing an attacker who can observe or manipulate the network traffic to capture these credentials or disrupt DDNS updates. Successful exploitation could lead to disclosure of DDNS account credentials, unauthorized access to DDNS management, or modification of DNS records. The vulnerability requires DDNS configuration and attacker network access. No patch or official remediation has been disclosed as of the publication date.
Potential Impact
The vulnerability allows attackers with network visibility or control to intercept sensitive DDNS authentication credentials and potentially gain unauthorized access to DDNS management functions. This could result in unauthorized modification of DNS records, impacting the integrity and availability of DNS services associated with the affected deployment.
Mitigation Recommendations
Patch status is not yet confirmed — check the vendor advisory for current remediation guidance. Until an official fix is available, users should consider disabling DDNS functionality if not required or ensure that network paths between the device and DDNS service are secured to prevent interception. Monitor vendor communications for updates on remediation.
Technical Details
- Data Version
- 5.2
- Assigner Short Name
- TPLink
- Date Reserved
- 2026-08-12T23:34:21.158Z
- Cvss Version
- 4.0
- State
- PUBLISHED
- Remediation Level
- null
Threat ID: 6a874d0dacd9273b49024614
Added to database: 08/20/2026, 18:53:01 UTC
Last enriched: 08/20/2026, 19:07:46 UTC
Last updated: 08/20/2026, 19:12:17 UTC
Views: 4
Community Reviews
0 reviewsCrowdsource mitigation strategies, share intel context, and vote on the most helpful responses. Sign in to add your voice and help keep defenders ahead.
Want to contribute mitigation steps or threat intel context? Sign in or create an account to join the community discussion.
Actions
Updates to AI analysis require Pro Console access. Upgrade inside Console → Billing.
Need more coverage?
Upgrade to Pro Console for AI refresh and higher limits.
For incident response and remediation, OffSeq services can help resolve threats faster.
Latest Threats
Check if your credentials are on the dark web
Instant breach scanning across billions of leaked records. Free tier available.