CVE-2026-4042: Tenda i12 Firmware

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

A weakness has been identified in Tenda i12 1.0.0.6(2204). The affected element is the function formWifiMacFilterGet of the file /goform/WifiMacFilterGet. This manipulation of the argument index causes stack-based buffer overflow. The attack may be initiated remotely. The exploit has been made available to the public and could be used for attacks.

Affected products

• Tenda i12 Firmware: version 1.0.0.6(2204) only

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