CVE-2026-5155: Tenda CH22 Firmware

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

A vulnerability was found in Tenda CH22 1.0.0.1. This affects the function fromAdvSetWan of the file /goform/AdvSetWan of the component Parameter Handler. The manipulation of the argument wanmode 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 CH22 Firmware: version 1.0.0.1 only

Published 2026-03-30. Last modified 2026-06-17.