{"cve":"CVE-2018-7794","nvd":{"published":"2020-01-06T23:15:10.893","modified":"2026-06-17T02:03:44.633","status":"Modified","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.","cvss_v4":null,"cvss_v3":{"version":"3.1","vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H","score":7.5},"cwes":["CWE-754"],"references":["https://www.se.com/ww/en/download/document/SEVD-2019-344-01","https://www.se.com/ww/en/download/document/SEVD-2019-344-01"],"products":["schneider-electric:140cpu65150_firmware","schneider-electric:140cpu65160_firmware","schneider-electric:140cpu65160s_firmware","schneider-electric:140cpu65260_firmware","schneider-electric:140cpu65860_firmware","schneider-electric:140cpu67060_firmware","schneider-electric:140cpu67160_firmware","schneider-electric:140cpu67160s_firmware","schneider-electric:140cpu67260_firmware","schneider-electric:140cpu67261_firmware","schneider-electric:140cpu67861_firmware","schneider-electric:modicon_m340_firmware","schneider-electric:modicon_m580_firmware","schneider-electric:tsxh5724m_firmware","schneider-electric:tsxh5744m_firmware","schneider-electric:tsxp57104m_firmware","schneider-electric:tsxp57154m_firmware","schneider-electric:tsxp571634m_firmware","schneider-electric:tsxp57204m_firmware","schneider-electric:tsxp57254m_firmware","schneider-electric:tsxp572634m_firmware","schneider-electric:tsxp57304m_firmware","schneider-electric:tsxp57354m_firmware","schneider-electric:tsxp573634m_firmware","schneider-electric:tsxp57454m_firmware","schneider-electric:tsxp574634m_firmware","schneider-electric:tsxp57554m_firmware","schneider-electric:tsxp575634m_firmware","schneider-electric:tsxp576634m_firmware"],"source":"nvd","synced_at":"2026-10-19T21:01:01.339895972+00:00"},"epss":{"cve":"CVE-2018-7794","score":0.01399,"percentile":0.72469,"date":"2026-10-31"},"kev":null,"osv":[],"attribution":["This product uses the NVD API but is not endorsed or certified by the NVD.","EPSS scores: FIRST Exploit Prediction Scoring System, https://www.first.org/epss","Known exploited vulnerabilities: CISA Known Exploited Vulnerabilities Catalog, https://www.cisa.gov/known-exploited-vulnerabilities-catalog","Package advisories: OSV (https://osv.dev), from the GitHub Advisory Database, PyPA, Go, RustSec and other ecosystem databases, under CC-BY 4.0 or CC0","CVE records: the CVE Program's CVE List (https://www.cve.org), under its terms of use (https://www.cve.org/Legal/TermsOfUse). CVE is a registered trademark of The MITRE Corporation; this product is not affiliated with the CVE Program."]}