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Vulnerabilities

Vulnerability · CVE-2018-14558

Tenda AC7, AC9, and AC10 Routers Command Injection Vulnerability

Published Oct 30, 2018 · catalog updated Jun 16, 2026 · Tenda AC7, AC9, and AC10 Routers

Patch now

CVE-2018-14558 is in the CISA known-exploited catalog, due May 3, 2022. Confirm Tenda AC7, AC9, and AC10 Routers against the vendor advisory and apply that fix. The CVSS score does not change the priority.

Gaps on this record

  • No version range is stored. A customer cannot check an installed version against this record.
Severity
Critical9.8
Known exploitation
CISA KEV and VulnCheck KEV
EPSS
8.51%
Remediation
Remediation guidance
Affected products
cpe tenda/ac10 firmware · cpe tenda/ac7 firmware · cpe tenda/ac9 firmware · vendor Tenda AC7, AC9, and AC10 Routers

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.

Are you affected?

Enter the version you run. The result uses only the ranges stored on this record.

The check returns affected, not affected, or incomplete. It does not guess a version that is missing from the record.

  • cpe tenda/ac10 firmwareversion unspecified
  • cpe tenda/ac7 firmwareversion unspecified
  • cpe tenda/ac9 firmwareversion unspecified
  • vendor Tenda AC7, AC9, and AC10 Routersversion unspecified

How to fix CVE-2018-14558

What to do

Three questions, each answered from this record only. Confirm the vendor advisory before you patch.

Should you patch?

CVE-2018-14558 is in the CISA known-exploited catalog, due May 3, 2022. Confirm Tenda AC7, AC9, and AC10 Routers against the vendor advisory and apply that fix. The CVSS score does not change the priority.

Which versions are affected?

Affected version ranges are not on this record. Apply updates per vendor instructions.

What should an analyst verify?

CWE-78: OS Command Injection. EPSS 8.51%. The CISA KEV listing is the exploitation evidence. No Exploit-DB or Metasploit reference is linked. Use the source links for the original advisory.

Code

The project this record applies to. Exploit listings stay in References.

Timeline

Detection, updates, and resolution for this record.

  1. Oct 30, 2018 · Catalog

    Detected

    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

  2. Nov 3, 2021 · CISA KEV

    Known exploited

    Apply updates per vendor instructions.

  3. May 3, 2022 · CISA KEV

    Remediation due

    Apply updates per vendor instructions.

  4. Jun 16, 2026 · Catalog

    Updated

    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

Sources

  • CISA KEVConfirmed exploitationCVE-2018-14558

    Tenda AC7, AC9, and AC10 devices contain a command injection vulnerability due to the "formsetUsbUnload" function executes a dosystemCmd function with untrusted input. Successful exploitation allows an attacker to execute OS commands via a crafted goform/setUsbUnload request.

    cisa.gov
  • CVE.orgVulnerability recordCVE-2018-14558

    Official CVE identifier

    cve.org
  • FIRST EPSSExploitation probabilityCVE-2018-14558

    30-day exploitation probability 8.5%

    first.org
  • NIST NVDVulnerability recordCVE-2018-14558

    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 arbit

    nvd.nist.gov
  • VulnCheck KEVConfirmed exploitationCVE-2018-14558

    Tenda AC7, AC9, and AC10 devices contain a command injection vulnerability due to the "formsetUsbUnload" function executes a dosystemCmd function with untrusted input. Successful exploitation allows an attacker to execute OS commands via a crafted goform/setUsbUnload request.

    vulncheck.com

References

Freshness

Last verified in this catalog Oct 17, 2026. Significant claims (KEV, EPSS, CVSS, affected ranges) come from the source rows above — open the original publisher for the authoritative advisory.