CVE-2026-5686: Tenda CX12L Firmware

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

A security flaw has been discovered in Tenda CX12L 16.03.53.12. This vulnerability affects the function fromRouteStatic of the file /goform/RouteStatic. The manipulation of the argument page results in stack-based buffer overflow. The attack can be launched remotely. The exploit has been released to the public and may be used for attacks.

Affected products

• Tenda CX12L Firmware: version 16.03.53.12 only

Published 2026-04-06. Last modified 2026-07-24.