CVE-2026-2140: Tenda TX9 Firmware

High severity, CVSS 8.8. EPSS: 0.8% chance of exploitation in the next 30 days.

A vulnerability was identified in Tenda TX9 up to 22.03.02.10_multi. Affected by this issue is the function sub_4223E0 of the file /goform/setMacFilterCfg. Such manipulation of the argument deviceList leads to buffer overflow. The attack may be launched remotely. The exploit is publicly available and might be used.

Affected products

• Tenda TX9 Firmware: up to and including 22.03.02.10

Published 2026-02-08. Last modified 2026-06-17.