CVE-2025-3675: Totolink a3700r Firmware

Medium severity, CVSS 5.3. EPSS: 0.6% chance of exploitation in the next 30 days.

A vulnerability was found in TOTOLINK A3700R 9.1.2u.5822_B20200513. It has been rated as critical. Affected by this issue is the function setL2tpServerCfg of the file /cgi-bin/cstecgi.cgi. The manipulation leads to improper access controls. The attack may be launched remotely. The exploit has been disclosed to the public and may be used.

Affected products

• Totolink a3700r Firmware: version 9.1.2u.5822_b20200513 only

Published 2025-04-16. Last modified 2026-06-17.