CVE-2026-3804: Tenda i3 Firmware

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

A security flaw has been discovered in Tenda i3 1.0.0.6(2204). This vulnerability affects the function formWifiMacFilterSet of the file /goform/WifiMacFilterSet. The manipulation of the argument index results in stack-based buffer overflow. It is possible to launch the attack remotely. The exploit has been released to the public and may be used for attacks.

Affected products

• Tenda i3 Firmware: version 1.0.0.6(2204) only

Published 2026-03-09. Last modified 2026-06-17.