{"id":"CVE-2018-7794","url":"https://www.cyber-defence.io/tools/cve/CVE-2018-7794","generatedAt":"2026-10-28T22:12:15.466Z","title":"A CWE-754: Improper Check for Unusual or Exceptional Conditions vulnerability exists in Modicon M580, Modicon M340, Modicon Quantum, Modicon Premium (see security notification for specific versions) which could cause a Denial of Service when reading…","description":"A CWE-754: Improper Check for Unusual or Exceptional Conditions vulnerability exists in Modicon M580, Modicon M340, Modicon Quantum, Modicon Premium (see security notification for specific versions) which could cause a Denial of Service when reading data with invalid index using Modbus TCP.","published":"2020-01-06T23:15:11.000Z","lastModified":"2026-06-17T02:03:45.000Z","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:N/I:N/A:H"},"cwe":["CWE-754"],"affected":["schneider-electric/modicon m580 firmware","schneider-electric/modicon m340 firmware","schneider-electric/tsxh5744m firmware","schneider-electric/tsxh5724m firmware","schneider-electric/tsxp576634m firmware","schneider-electric/tsxp57554m firmware","schneider-electric/tsxp575634m firmware","schneider-electric/tsxp57454m firmware","schneider-electric/tsxp574634m firmware","schneider-electric/tsxp57354m firmware","schneider-electric/tsxp573634m firmware","schneider-electric/tsxp57304m firmware","schneider-electric/tsxp57254m firmware","schneider-electric/tsxp572634m firmware","schneider-electric/tsxp57204m firmware","schneider-electric/tsxp571634m firmware","schneider-electric/tsxp57154m firmware","schneider-electric/tsxp57104m firmware","schneider-electric/140cpu65150 firmware","schneider-electric/140cpu65160 firmware","schneider-electric/140cpu65260 firmware","schneider-electric/140cpu67261 firmware","schneider-electric/140cpu67060 firmware","schneider-electric/140cpu67160 firmware","schneider-electric/140cpu67260 firmware","schneider-electric/140cpu65860 firmware","schneider-electric/140cpu67861 firmware","schneider-electric/140cpu65160s firmware","schneider-electric/140cpu67160s firmware"],"epss":{"score":0.01399,"percentile":0.7232,"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 (1.40%). Schedule it in the normal patch cycle and watch for a rise in EPSS or a public exploit."},"changes":[],"references":[{"url":"https://www.se.com/ww/en/download/document/SEVD-2019-344-01","tags":["Vendor Advisory"],"source":"cybersecurity@se.com"},{"url":"https://www.se.com/ww/en/download/document/SEVD-2019-344-01","tags":["Vendor Advisory"],"source":"af854a3a-2127-422b-91ae-364da2661108"}],"sources":{"nvd":"https://nvd.nist.gov/vuln/detail/CVE-2018-7794","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."}