CVE-2026-4008: Tenda w3 Firmware

High severity, CVSS 8.8. EPSS: 1.1% chance of exploitation in the next 30 days.

A flaw has been found in Tenda W3 1.0.0.3(2204). This issue affects some unknown processing of the file /goform/wifiSSIDset of the component POST Parameter Handler. Executing a manipulation of the argument index/GO can lead to stack-based buffer overflow. It is possible to launch the attack remotely. The exploit has been published and may be used.

Affected products

• Tenda w3 Firmware: version 1.0.0.3(2204) only

Published 2026-03-12. Last modified 2026-06-17.