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TOTOLINK A3700R Improper Access Control Vulnerability in setDdnsCfg Function

Vulnerability

A critical vulnerability has been identified in the TOTOLINK A3700R router, specifically in version 9.1.2u.5822_B20200513. The issue arises in the function setDdnsCfg within the file /cgi-bin/cstecgi.cgi, where improper access controls allow for remote exploitation. This vulnerability has been publicly disclosed and is available as a proof-of-concept exploit.

Impact

Exploitation of this vulnerability allows for unauthorized access, potentially leading to unauthorized changes in the device's configuration or behavior.

Added: Jun 9, 2025, 7:46 PM
Updated: Jun 9, 2025, 7:46 PM

Vulnerability Rating

Custom Algorithm
spread
0.0
impact
0.6
exploitability
6.0
remediation
0.0
relevance
0.0
threat
6.4
urgency
2.9
incentive
0.8

Our algorithm analyzes dozens of metrics to generate these 8 key vulnerability categories, which are then combined to calculate the overall risk score.