CVE-2018-14558
Critical 9.8 Exploited in the wild (KEV)
Confirmed active exploitation — CISA KEV catalog
- Name
- Tenda AC7, AC9, and AC10 Routers Command Injection Vulnerability
- Added to catalog
- Remediation due date (US federal)
- Required action
- Apply updates per vendor instructions.
Description
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.
Metrics
- CVSS 3.1
-
9.8 (CRITICAL)
Score source: NVD
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H - EPSS — exploit probability
- 9% (percentile: 95) as of 1 November 2026
- CWE
- CWE-78
Affected products
tenda: ac7 firmware; tenda: ac7; tenda: ac9 firmware; tenda: ac9; tenda: ac10 firmware; tenda: ac10
References
- https://github.com/zsjevilhex/iot/blob/master/route/tenda/tenda-01/Tenda.md Broken LinkExploitThird Party Advisory
- https://github.com/zsjevilhex/iot/blob/master/route/tenda/tenda-01/Tenda.md Broken LinkExploitThird Party Advisory
- https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2018… US Government Resource