CVE-2022-40876: Tenda AX1803 Firmware

Critical severity, CVSS 9.8. EPSS: 2% chance of exploitation in the next 30 days.

In Tenda ax1803 v1.0.0.1, the http requests handled by the fromAdvSetMacMtuWan functions, wanSpeed, cloneType, mac, can cause a stack overflow and enable remote code execution (RCE).

Affected products

• Tenda AX1803 Firmware: version 1.0.0.1 only

Published 2022-10-27. Last modified 2026-06-17.