CVE-2025-3664: totolink a3700r_firmware Incorrect Privilege Assignment

Vulnerability summary

CVE-2025-3664 is a medium (CVSS 6.9) Incorrect Privilege Assignment vulnerability in totolink a3700r_firmware. EPSS estimates a 0.61% chance of exploitation in the next 30 days, higher than 48.5% of scored vulnerabilities. 2 public exploits are recorded.

Timeline

1. 16-04-2025
   PublishedVulnerability first disclosed.
2. 16-04-2025
   Last modifiedVulnerability information updated.

Description

A vulnerability, which was classified as critical, was found in TOTOLINK A3700R 9.1.2u.5822_B20200513. Affected is the function setWiFiEasyGuestCfg of the file /cgi-bin/cstecgi.cgi. The manipulation leads to improper access controls. It is possible to launch the attack remotely. The exploit has been disclosed to the public and may be used. The vendor was contacted early about this disclosure but did not respond in any way.

• CWE-266Incorrect Privilege AssignmentA product incorrectly assigns a privilege to a particular actor, creating an unintended sphere of control for that actor.
• CWE-284Improper Access ControlThe product does not restrict or incorrectly restricts access to a resource from an unauthorized actor.