{"id":"CVE-2017-18371","url":"https://www.cyber-defence.io/tools/cve/CVE-2017-18371","generatedAt":"2026-10-28T22:42:11.688Z","title":"The ZyXEL P660HN-T1A v2 TCLinux Fw #7.3.37.6 router distributed by TrueOnline has three user accounts with default passwords, including two hardcoded service accounts: one with the username true and password true, and another with the username…","description":"The ZyXEL P660HN-T1A v2 TCLinux Fw #7.3.37.6 router distributed by TrueOnline has three user accounts with default passwords, including two hardcoded service accounts: one with the username true and password true, and another with the username supervisor and password zyad1234. These accounts can be used to login to the web interface, exploit authenticated command injections, and change router settings for malicious purposes.","published":"2019-05-02T17:29:01.000Z","lastModified":"2026-06-17T01:12:42.000Z","status":"Modified","sourceIdentifier":"cve@mitre.org","cvss":{"version":"3.0","score":9.8,"severity":"CRITICAL","vector":"CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H"},"cwe":["CWE-798"],"affected":["billion/5200w-t firmware","zyxel/p660hn-t1a v2 firmware","zyxel/p660hn-t1a v1 firmware"],"epss":{"score":0.22531,"percentile":0.97697,"date":"2026-10-27","history":[{"date":"2026-09-21","score":0.19533,"percentile":0.97313},{"date":"2026-09-22","score":0.22531,"percentile":0.97604}]},"kev":{"listed":false},"exploits":{"count":0,"verified":false,"firstPublished":null,"source":"Exploit-DB (https://gitlab.com/exploit-database/exploitdb)","entries":[]},"verdict":{"level":"urgent","text":"EPSS puts the probability of exploitation in the next 30 days at 22.5%, higher than 98% of all known CVEs. Patch or mitigate before the next change window."},"changes":[],"references":[{"url":"http://www.zyxel.com/support/announcement_unauthenticated.shtml","tags":["Broken Link"],"source":"cve@mitre.org"},{"url":"https://raw.githubusercontent.com/pedrib/PoC/master/advisories/zyxel_trueonline.txt","tags":["Exploit","Third Party Advisory"],"source":"cve@mitre.org"},{"url":"https://seclists.org/fulldisclosure/2017/Jan/40","tags":["Exploit","Mailing List","Third Party Advisory"],"source":"cve@mitre.org"},{"url":"https://ssd-disclosure.com/index.php/archives/2910","tags":["Exploit","Technical Description","Third Party Advisory"],"source":"cve@mitre.org"},{"url":"https://unit42.paloaltonetworks.com/new-mirai-variant-targets-enterprise-wireless-presentation-display-systems/","tags":["Technical Description","Third Party Advisory"],"source":"cve@mitre.org"},{"url":"http://www.zyxel.com/support/announcement_unauthenticated.shtml","tags":["Broken Link"],"source":"af854a3a-2127-422b-91ae-364da2661108"},{"url":"https://raw.githubusercontent.com/pedrib/PoC/master/advisories/zyxel_trueonline.txt","tags":["Exploit","Third Party Advisory"],"source":"af854a3a-2127-422b-91ae-364da2661108"},{"url":"https://seclists.org/fulldisclosure/2017/Jan/40","tags":["Exploit","Mailing List","Third Party Advisory"],"source":"af854a3a-2127-422b-91ae-364da2661108"},{"url":"https://ssd-disclosure.com/index.php/archives/2910","tags":["Exploit","Technical Description","Third Party Advisory"],"source":"af854a3a-2127-422b-91ae-364da2661108"},{"url":"https://unit42.paloaltonetworks.com/new-mirai-variant-targets-enterprise-wireless-presentation-display-systems/","tags":["Technical Description","Third Party Advisory"],"source":"af854a3a-2127-422b-91ae-364da2661108"}],"sources":{"nvd":"https://nvd.nist.gov/vuln/detail/CVE-2017-18371","epss":"https://www.first.org/epss/","kev":"https://www.cisa.gov/known-exploited-vulnerabilities-catalog","exploitdb":"https://www.exploit-db.com/"},"licence":"CC BY 4.0 — link back to the CVE Explorer if you publish the results; upstream data remains subject to its own terms."}