CVE-2018-14558: Tenda AC7, AC9, and AC10 Routers Command Injection Vulnerability

Critical severity, CVSS 9.8. Actively exploited: in CISA KEV since 2021-11-03. EPSS: 8.5% chance of exploitation in the next 30 days.

An issue was discovered on Tenda AC7 devices with firmware through V15.03.06.44_CN(AC7), AC9 devices with firmware through V15.03.05.19(6318)_CN(AC9), and AC10 devices with firmware through V15.03.06.23_CN(AC10). A command Injection vulnerability allows attackers to execute arbitrary OS commands via a crafted goform/setUsbUnload request. This occurs because the "formsetUsbUnload" function executes a dosystemCmd function with untrusted input.

Affected products

• Tenda AC10 Firmware: up to and including 15.03.06.23_cn
• Tenda AC7 Firmware: up to and including 15.03.06.44_cn
• Tenda AC9 Firmware: up to and including 15.03.05.19\(6318\)_cn

Published 2018-10-30. Last modified 2026-06-17.