CVE-2021-45986: Tendacn g1 Firmware

Critical severity, CVSS 9.8. EPSS: 1.9% chance of exploitation in the next 30 days.

Tenda routers G1 and G3 v15.11.0.17(9502)_CN were discovered to contain a command injection vulnerability in the function formSetUSBShareInfo. This vulnerability allows attackers to execute arbitrary commands via the usbOrdinaryUserName parameter.

Affected products

• Tendacn g1 Firmware: version 15.11.0.17(9502)_cn only
• Tendacn g3 Firmware: version 15.11.0.17(9502)_cn only

Published 2022-02-04. Last modified 2026-06-17.