CVE-2026-11503: Tenda CX12L

High severity, CVSS 8.8. EPSS: 0.5% chance of exploitation in the next 30 days.

A security vulnerability has been detected in Tenda CX12L 16.03.53.12. The affected element is the function form_fast_setting_wifi_set of the file /goform/fast_setting_wifi_set of the component Wi-Fi Configuration Endpoint. Such manipulation of the argument ssid leads to stack-based buffer overflow. The attack can be launched remotely. The exploit has been disclosed publicly and may be used.

Affected products

• Tenda CX12L: version 16.03.53.12 only

Published 2026-06-08. Last modified 2026-07-23.