CVE-2026-8138: Tenda CX12L Firmware

High severity, CVSS 8.8. EPSS: 1% chance of exploitation in the next 30 days.

A vulnerability was found in Tenda CX12L 16.03.53.12. This issue affects the function formSetPPTPServer of the file /goform/SetPptpServerCfg”. The manipulation results in stack-based buffer overflow. The attack can be executed remotely. The exploit has been made public and could be used.

Affected products

• Tenda CX12L Firmware: version 16.03.53.12 only

Published 2026-05-08. Last modified 2026-06-17.