CVE-2019-5071: Tendacn AC9V1.0 Firmware

High severity, CVSS 7.8. EPSS: 1.7% chance of exploitation in the next 30 days.

An exploitable command injection vulnerability exists in the /goform/WanParameterSetting functionality of Tenda AC9 Router AC1200 Smart Dual-Band Gigabit WiFi Route (AC9V1.0 Firmware V15.03.05.16multiTRU). A specially crafted HTTP POST request can cause a command injection in the DNS1 post parameters, resulting in code execution. An attacker can send HTTP POST request with command to trigger this vulnerability.

Affected products

• Tendacn AC9V1.0 Firmware: version 15.03.05.14_en only; version 15.03.05.16multitru only

Published 2019-11-21. Last modified 2026-06-17.