{"id":"CVE-2017-18046","url":"https://www.cyber-defence.io/tools/cve/CVE-2017-18046","generatedAt":"2026-10-28T21:27:21.780Z","title":"Buffer overflow on Dasan GPON ONT WiFi Router H640X 12.02-01121 2.77p1-1124 and 3.03p2-1146 devices allows remote attackers to execute arbitrary code via a long POST request to the login_action function in /cgi-bin/login_action.cgi (aka cgipage.cgi).","description":"Buffer overflow on Dasan GPON ONT WiFi Router H640X 12.02-01121 2.77p1-1124 and 3.03p2-1146 devices allows remote attackers to execute arbitrary code via a long POST request to the login_action function in /cgi-bin/login_action.cgi (aka cgipage.cgi).","published":"2018-01-21T22:29:00.000Z","lastModified":"2026-06-17T01:12:06.000Z","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-119"],"affected":["dasannetworks/h640x firmware"],"epss":{"score":0.05045,"percentile":0.92252,"date":"2026-10-27","history":[]},"kev":{"listed":false},"exploits":{"count":0,"verified":false,"firstPublished":null,"source":"Exploit-DB (https://gitlab.com/exploit-database/exploitdb)","entries":[]},"verdict":{"level":"high","text":"High impact if exploited, but EPSS currently rates exploitation as unlikely (5.04%). Schedule it in the normal patch cycle and watch for a rise in EPSS or a public exploit."},"changes":[],"references":[{"url":"https://blogs.securiteam.com/index.php/archives/3552","tags":["Exploit","Third Party Advisory"],"source":"cve@mitre.org"},{"url":"https://pastebin.com/Yxd9S46A","source":"cve@mitre.org"},{"url":"https://twitter.com/ankit_anubhav/status/982261670394249216","source":"cve@mitre.org"},{"url":"https://blogs.securiteam.com/index.php/archives/3552","tags":["Exploit","Third Party Advisory"],"source":"af854a3a-2127-422b-91ae-364da2661108"},{"url":"https://pastebin.com/Yxd9S46A","source":"af854a3a-2127-422b-91ae-364da2661108"},{"url":"https://twitter.com/ankit_anubhav/status/982261670394249216","source":"af854a3a-2127-422b-91ae-364da2661108"}],"sources":{"nvd":"https://nvd.nist.gov/vuln/detail/CVE-2017-18046","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."}