{"id":"CVE-2018-14558","published":"2018-10-30T18:29:00Z","modified":"2026-06-17T01:41:11Z","title":"Tenda AC7, AC9, and AC10 Routers Command Injection Vulnerability","vendor":"Tenda","product":"AC7, AC9, and AC10 Routers","tier":"core","eol":null,"description":{"text":"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.","provenance":"source","from":"NVD"},"summary":{"text":"The Tenda AC7, AC9, and AC10 routers contain a command injection flaw in the formsetUsbUnload function, which passes untrusted input to a system command execution routine (dosystemCmd). This affects AC7 firmware through V15.03.06.44_CN, AC9 firmware through V15.03.05.19(6318)_CN, and AC10 firmware through V15.03.06.23_CN. An attacker who can send a crafted goform/setUsbUnload request to the device can execute arbitrary operating system commands, with no authentication or user interaction required and network access as the only precondition.","provenance":"ai","model":"claude-haiku-5-5","generatedAt":"2026-10-31T04:54:19Z"},"cvss":{"score":9.8,"severity":"CRITICAL","version":"3.1","vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H","provenance":"source","from":"NVD"},"epss":{"score":0.0851,"percentile":0.95034,"date":"2026-10-30","provenance":"source"},"kev":{"dateAdded":"2021-11-03","dueDate":"2022-05-03","ransomware":false,"requiredAction":"Apply updates per vendor instructions.","notes":"https://nvd.nist.gov/vuln/detail/CVE-2018-14558","provenance":"source"},"vulncheckKev":{"dateAdded":"2021-04-13","exploitedFirstSeen":"2021-04-13","ransomware":false,"evidence":[{"url":"https://otx.alienvault.com/pulse/6075b645942d5adf9bb8949b","date":"2021-04-13"},{"url":"https://www.cisa.gov/sites/default/files/feeds/known_exploited_vulnerabilities.json","date":"2021-11-03"},{"url":"https://blog.xlab.qianxin.com/mirai-tbot-en/","date":"2024-01-03"},{"url":"https://dashboard.shadowserver.org/statistics/honeypot/vulnerability/map/?day=2024-01-28&host_type=src&vulnerability=cve-2018-14558","date":"2024-01-28"},{"url":"https://dashboard.shadowserver.org/statistics/honeypot/vulnerability/map/?day=2024-01-29&host_type=src&vulnerability=cve-2018-14558","date":"2024-01-29"},{"url":"https://dashboard.shadowserver.org/statistics/honeypot/vulnerability/map/?day=2024-01-30&host_type=src&vulnerability=cve-2018-14558","date":"2024-01-30"},{"url":"https://dashboard.shadowserver.org/statistics/honeypot/vulnerability/map/?day=2024-01-31&host_type=src&vulnerability=cve-2018-14558","date":"2024-01-31"},{"url":"https://dashboard.shadowserver.org/statistics/honeypot/vulnerability/map/?day=2024-02-01&host_type=src&vulnerability=cve-2018-14558","date":"2024-02-01"},{"url":"https://dashboard.shadowserver.org/statistics/honeypot/vulnerability/map/?day=2024-02-02&host_type=src&vulnerability=cve-2018-14558","date":"2024-02-02"},{"url":"https://dashboard.shadowserver.org/statistics/honeypot/vulnerability/map/?day=2024-02-03&host_type=src&vulnerability=cve-2018-14558","date":"2024-02-03"}],"evidenceTotal":512,"provenance":"source"},"exploited":true,"otx":{"pulseCount":50,"pulses":[{"name":"Actively_Exploited_Kev | Oct 29, 2026","url":"https://otx.alienvault.com/pulse/6ae20c1db17e7057ae7d9ad1","created":"2026-10-28"},{"name":"Actively_Exploited_Kev | Oct 28, 2026","url":"https://otx.alienvault.com/pulse/6ae0ba7e0e2a97ff7b218819","created":"2026-10-27"},{"name":"Actively_Exploited_Kev | Oct 27, 2026","url":"https://otx.alienvault.com/pulse/6adf68b85c3e852f3c111d18","created":"2026-10-26"},{"name":"Actively_Exploited_Kev | Oct 24, 2026","url":"https://otx.alienvault.com/pulse/6adb740e397c3ad4799aa4cd","created":"2026-10-23"},{"name":"Actively_Exploited_Kev | Oct 23, 2026","url":"https://otx.alienvault.com/pulse/6ada236fcfba2dfa730ea482","created":"2026-10-22"},{"name":"Actively_Exploited_Kev | Oct 22, 2026","url":"https://otx.alienvault.com/pulse/6ad8d33a077cbb5cab524d80","created":"2026-10-21"},{"name":"Actively_Exploited_Kev | Oct 21, 2026","url":"https://otx.alienvault.com/pulse/6ad78130c4d1ac2be83a8b6d","created":"2026-10-20"},{"name":"Actively_Exploited_Kev | Oct 20, 2026","url":"https://otx.alienvault.com/pulse/6ad62f63c24a405a3423cc13","created":"2026-10-19"},{"name":"Actively_Exploited_Kev | Oct 19, 2026","url":"https://otx.alienvault.com/pulse/6ad4dda174e5797d0bd238b7","created":"2026-10-18"},{"name":"Actively_Exploited_Kev | Oct 18, 2026","url":"https://otx.alienvault.com/pulse/6ad38c22e1848f8189d1c121","created":"2026-10-17"}],"provenance":"machine"},"cwes":[{"id":"CWE-78","name":"Improper Neutralization of Special Elements used in an OS Command"}],"references":[{"url":"https://github.com/zsjevilhex/iot/blob/master/route/tenda/tenda-01/Tenda.md","tags":["Broken Link","Exploit","Third Party Advisory"]},{"url":"https://github.com/zsjevilhex/iot/blob/master/route/tenda/tenda-01/Tenda.md","tags":["Broken Link","Exploit","Third Party Advisory"]},{"url":"https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2018-14558","tags":["US Government Resource"]}],"techniques":[{"id":"T1190","name":"Exploit Public-Facing Application","tactics":["initial-access"],"provenance":"ai","basis":"ai-mapping","bases":["ai-mapping"],"basisDetail":"claude-haiku-5-5: Remote crafted HTTP request exploits public-facing router web interface","mappingType":"exploitation_technique","evidence":[{"from":"description","quote":"via a crafted goform/setUsbUnload request","start":297,"end":338}],"model":"claude-haiku-5-5","confidence":"medium","confidenceNote":"AI-mapped from the description (quote-validated, not expert-reviewed)"},{"id":"T1059","name":"Command and Scripting Interpreter","tactics":["execution"],"provenance":"ai","basis":"ai-mapping","bases":["ai-mapping"],"basisDetail":"claude-haiku-5-5: Arbitrary OS command execution on the device","mappingType":"primary_impact","evidence":[{"from":"description","quote":"execute arbitrary OS commands via a crafted","start":267,"end":310}],"model":"claude-haiku-5-5","confidence":"medium","confidenceNote":"AI-mapped from the description (quote-validated, not expert-reviewed)"}],"reports":[],"affected":[],"advisories":[],"euvd":{"id":"EUVD-2018-6467","url":"https://euvd.enisa.europa.eu/vulnerability/EUVD-2018-6467","exploited":true,"exploitedSince":"2021-11-03","provenance":"source"},"exploits":[],"exploitSources":null,"exploitRefs":["https://github.com/zsjevilhex/iot/blob/master/route/tenda/tenda-01/Tenda.md"],"flow":[{"stage":"exploitation","techniques":["T1190"],"provenance":"ai"},{"stage":"primary","techniques":["T1059"],"provenance":"ai"}],"timeline":[{"date":"2018-10-30","kind":"published","label":"Published (NVD)","url":"https://nvd.nist.gov/vuln/detail/CVE-2018-14558","provenance":"source"},{"date":"2021-04-13","kind":"exploited-reported","label":"Exploitation first reported (VulnCheck KEV evidence)","url":"https://otx.alienvault.com/pulse/6075b645942d5adf9bb8949b","provenance":"source"},{"date":"2021-11-03","kind":"kev","label":"Added to CISA 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