{"id":"CVE-2018-7811","url":"https://www.cyber-defence.io/tools/cve/CVE-2018-7811","generatedAt":"2026-10-28T21:19:38.947Z","title":"An Unverified Password Change vulnerability exists in the embedded web servers in all Modicon M340, Premium, Quantum PLCs and BMXNOR0200 which could allow an unauthenticated remote user to access the change password function of the web server","description":"An Unverified Password Change vulnerability exists in the embedded web servers in all Modicon M340, Premium, Quantum PLCs and BMXNOR0200 which could allow an unauthenticated remote user to access the change password function of the web server","published":"2018-11-30T19:29:01.000Z","lastModified":"2026-06-17T02:03:47.000Z","status":"Modified","sourceIdentifier":"cybersecurity@se.com","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-640"],"affected":["schneider-electric/modicom m340 firmware","schneider-electric/modicom premium firmware","schneider-electric/modicom quantum firmware","schneider-electric/modicom bmxnor0200h firmware"],"epss":{"score":0.03499,"percentile":0.89099,"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 (3.50%). Schedule it in the normal patch cycle and watch for a rise in EPSS or a public exploit."},"changes":[],"references":[{"url":"https://security.cse.iitk.ac.in/responsible-disclosure","source":"cybersecurity@se.com"},{"url":"https://www.schneider-electric.com/en/download/document/SEVD-2018-327-01/","tags":["Vendor Advisory"],"source":"cybersecurity@se.com"},{"url":"https://www.tenable.com/security/research/tra-2018-38","tags":["Exploit","Third Party Advisory"],"source":"cybersecurity@se.com"},{"url":"https://security.cse.iitk.ac.in/responsible-disclosure","source":"af854a3a-2127-422b-91ae-364da2661108"},{"url":"https://www.schneider-electric.com/en/download/document/SEVD-2018-327-01/","tags":["Vendor Advisory"],"source":"af854a3a-2127-422b-91ae-364da2661108"},{"url":"https://www.tenable.com/security/research/tra-2018-38","tags":["Exploit","Third Party Advisory"],"source":"af854a3a-2127-422b-91ae-364da2661108"}],"sources":{"nvd":"https://nvd.nist.gov/vuln/detail/CVE-2018-7811","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."}