{"id":"CVE-2018-7846","url":"https://www.cyber-defence.io/tools/cve/CVE-2018-7846","generatedAt":"2026-10-29T05:03:17.017Z","title":"A CWE-501: Trust Boundary Violation vulnerability on connection to the Controller exists in all versions of the Modicon M580, Modicon M340, Modicon Quantum and Modicon Premium which could cause unauthorized access by conducting a brute force attack on…","description":"A CWE-501: Trust Boundary Violation vulnerability on connection to the Controller exists in all versions of the Modicon M580, Modicon M340, Modicon Quantum and Modicon Premium which could cause unauthorized access by conducting a brute force attack on Modbus protocol to the controller.","published":"2019-05-22T20:29:02.000Z","lastModified":"2026-06-17T02:03:51.000Z","status":"Modified","sourceIdentifier":"cybersecurity@se.com","cvss":{"version":"3.1","score":9.8,"severity":"CRITICAL","vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H"},"cwe":["CWE-668"],"affected":["schneider-electric/modicon m580 firmware","schneider-electric/modicon m340 firmware","schneider-electric/modicon quantum firmware","schneider-electric/modicon premium firmware"],"epss":{"score":0.29575,"percentile":0.98182,"date":"2026-10-28","history":[]},"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 29.6%, higher than 98% of all known CVEs. Patch or mitigate before the next change window."},"changes":[],"references":[{"url":"https://www.schneider-electric.com/en/download/document/SEVD-2019-134-11/","tags":["Vendor Advisory"],"source":"cybersecurity@se.com"},{"url":"https://www.talosintelligence.com/vulnerability_reports/TALOS-2018-0735","tags":["Exploit","Third Party Advisory"],"source":"cybersecurity@se.com"},{"url":"https://www.schneider-electric.com/en/download/document/SEVD-2019-134-11/","tags":["Vendor Advisory"],"source":"af854a3a-2127-422b-91ae-364da2661108"},{"url":"https://www.talosintelligence.com/vulnerability_reports/TALOS-2018-0735","tags":["Exploit","Third Party Advisory"],"source":"af854a3a-2127-422b-91ae-364da2661108"}],"sources":{"nvd":"https://nvd.nist.gov/vuln/detail/CVE-2018-7846","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."}