{"id":"CVE-2018-7844","url":"https://www.cyber-defence.io/tools/cve/CVE-2018-7844","generatedAt":"2026-10-28T23:56:30.951Z","title":"A CWE-200: Information Exposure vulnerability exists in all versions of the Modicon M580, Modicon M340, Modicon Quantum, and Modicon Premium which could cause the disclosure of SNMP information when reading memory blocks from the controller over Modbus.","description":"A CWE-200: Information Exposure vulnerability exists in all versions of the Modicon M580, Modicon M340, Modicon Quantum, and Modicon Premium which could cause the disclosure of SNMP information when reading memory blocks from the controller over Modbus.","published":"2019-05-22T21:29:00.000Z","lastModified":"2026-06-17T02:03:51.000Z","status":"Modified","sourceIdentifier":"cybersecurity@se.com","cvss":{"version":"3.1","score":7.5,"severity":"HIGH","vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N"},"cwe":["CWE-200"],"affected":["schneider-electric/modicon premium firmware","schneider-electric/modicon quantum firmware","schneider-electric/modicon m340 firmware","schneider-electric/modicon m580 firmware"],"epss":{"score":0.02849,"percentile":0.86637,"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 (2.85%). Schedule it in the normal patch cycle and watch for a rise in EPSS or a public exploit."},"changes":[],"references":[{"url":"https://www.schneider-electric.com/en/download/document/SEVD-2019-134-11/","tags":["Mitigation","Vendor Advisory"],"source":"cybersecurity@se.com"},{"url":"https://www.talosintelligence.com/vulnerability_reports/TALOS-2018-0739","tags":["Exploit","Third Party Advisory"],"source":"cybersecurity@se.com"},{"url":"https://www.schneider-electric.com/en/download/document/SEVD-2019-134-11/","tags":["Mitigation","Vendor Advisory"],"source":"af854a3a-2127-422b-91ae-364da2661108"},{"url":"https://www.talosintelligence.com/vulnerability_reports/TALOS-2018-0739","tags":["Exploit","Third Party Advisory"],"source":"af854a3a-2127-422b-91ae-364da2661108"}],"sources":{"nvd":"https://nvd.nist.gov/vuln/detail/CVE-2018-7844","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."}