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

criticalknown exploitedCVE-2018-14558
Actively exploited. At least one CVE in this advisory is listed in the CISA Known Exploited Vulnerabilities catalog — exploitation has been observed in the wild. Treat remediation as urgent.
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.

CSIRTS triage

vendor: Tendaproduct: AC7, AC9, and AC10 RoutersRemote code execution
What
The command injection vulnerability allows an attacker to execute OS commands via a crafted request.
Who is affected
Tenda AC7, AC9, and AC10 router users are affected.
Urgency
Immediate action is required due to active exploitation and critical severity.
Action
Update the firmware of the affected routers.

AI-assisted analysis generated from the source advisory — verify against the original.

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Details

Source
CISA Known Exploited Vulnerabilities (US · database · site)
Severity
critical
Published
2021-11-03
Exploitation
Observed in the wild (CISA KEV)

Original advisory: https://nvd.nist.gov/vuln/detail/CVE-2018-14558

Exploitation outlook

EPSS (FIRST.org) estimates each CVE’s probability of exploitation in the next 30 days — here is the CSIRTS.com read on those numbers.

Referenced CVEs

CVECSIRTS overviewExternal
CVE-2018-14558coverage & exploitation statusNVD · CVE.org

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