CVE-2025-1339: Totolink x18 Firmware

High severity, CVSS 8.8. EPSS: 2.6% chance of exploitation in the next 30 days.

A vulnerability was found in TOTOLINK X18 9.1.0cu.2024_B20220329. It has been rated as critical. This issue affects the function setL2tpdConfig of the file /cgi-bin/cstecgi.cgi. The manipulation of the argument enable leads to os command injection. The attack may be initiated 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.

Affected products

• Totolink x18 Firmware: version 9.1.0cu.2024_b20220329 only

Published 2025-02-16. Last modified 2026-06-17.