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

CVE-2018-14558 · Severity: critical · CVSS 9.8 · Exploited in the wild · Published 2021-11-03

Tenda AC7, AC9, and AC10 routers are vulnerable to command injection via the 'formsetUsbUnload' function. The vulnerability occurs because the 'dosystemCmd' function processes untrusted input from crafted 'goform/setUsbUnload' requests, allowing for arbitrary OS command execution.

Technologies: Tenda Ac7, Tenda Ac9. Vendors: Tenda.

Quick answers

Is CVE-2018-14558 exploited in the wild?
Yes. CVE-2018-14558 is known to be exploited in the wild, first recorded on 3 November 2021. Treat it as urgent.
How severe is CVE-2018-14558?
Critical severity, with a CVSS score of 9.8, published 3 November 2021.
Which products and versions are affected?
Tenda AC7 Firmware through V15.03.06.44_CN(AC7); Tenda AC9 Firmware through V15.03.05.19(6318)_CN(AC9); Tenda AC10 Firmware through V15.03.06.23_CN(AC10).
Is there a fix for CVE-2018-14558?
No fixed version is recorded yet. Check the vendor's advisory in the references below. If you run it, Junglewise drafts a mitigation that fits your setup and applies it once you approve, with senior security engineers behind it.
How is CVE-2018-14558 attacked?
It is attacked over the network, in a network appliance.
Am I affected by CVE-2018-14558?
Check whether you run Tenda Ac10 Routers, Tenda Ac7 or Tenda Ac9. Junglewise does that check for you around the clock: connect your code, cloud and domains, and it matches new vulnerabilities like this one against what you actually run and tells you when one reaches you.

Affected products

  • Tenda AC7 Firmware through V15.03.06.44_CN(AC7)
  • Tenda AC9 Firmware through V15.03.05.19(6318)_CN(AC9)
  • Tenda AC10 Firmware through V15.03.06.23_CN(AC10)

Timeline

  • 2018-10-30: disclosed: NVD Published Date
  • 2021-11-03: kev added: Added to CISA Known Exploited Vulnerabilities Catalog

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