{"cve":"CVE-2018-7809","nvd":{"published":"2018-11-30T19:29:00.437","modified":"2026-06-17T02:03:46.450","status":"Modified","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 password delete function of the web server.","cvss_v4":null,"cvss_v3":{"version":"3.0","vector":"CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H","score":9.8},"cwes":["CWE-640"],"references":["https://www.schneider-electric.com/en/download/document/SEVD-2018-327-01/","https://www.tenable.com/security/research/tra-2018-38","https://www.schneider-electric.com/en/download/document/SEVD-2018-327-01/","https://www.tenable.com/security/research/tra-2018-38"],"products":["schneider-electric:modicom_bmxnor0200h_firmware","schneider-electric:modicom_m340_firmware","schneider-electric:modicom_premium_firmware","schneider-electric:modicom_quantum_firmware"],"source":"nvd","synced_at":"2026-10-19T20:53:59.789560037+00:00"},"epss":{"cve":"CVE-2018-7809","score":0.02468,"percentile":0.84502,"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."]}