{"cve":"CVE-2020-7540","nvd":{"published":"2020-12-11T01:15:12.377","modified":"2026-06-17T03:24:58.280","status":"Modified","description":"A CWE-306: Missing Authentication for Critical Function vulnerability exists in the Web Server on Modicon M340, Legacy Offers Modicon Quantum and Modicon Premium and associated Communication Modules (see security notification for affected versions), that could cause unauthenticated command execution in the controller when sending special HTTP requests.","cvss_v4":null,"cvss_v3":{"version":"3.1","vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H","score":9.8},"cwes":["CWE-306"],"references":["https://www.se.com/ww/en/download/document/SEVD-2020-343-04/","https://www.se.com/ww/en/download/document/SEVD-2020-343-04/"],"products":["schneider-electric:140cpu65150_firmware","schneider-electric:140cpu65160_firmware","schneider-electric:140noc77101_firmware","schneider-electric:140noc78000_firmware","schneider-electric:140noc78100_firmware","schneider-electric:140noe77101_firmware","schneider-electric:140noe77111_firmware","schneider-electric:bmxnoc0401_firmware","schneider-electric:bmxnoe0100_firmware","schneider-electric:bmxnoe0110_firmware","schneider-electric:bmxnor200h_firmware","schneider-electric:modicon_m340_bmxp341000_firmware","schneider-electric:modicon_m340_bmxp342000_firmware","schneider-electric:modicon_m340_bmxp3420102_firmware","schneider-electric:modicon_m340_bmxp3420102cl_firmware","schneider-electric:modicon_m340_bmxp342020_firmware","schneider-electric:modicon_m340_bmxp3420302_firmware","schneider-electric:modicon_m340_bmxp3420302cl_firmware","schneider-electric:tsxety4103_firmware","schneider-electric:tsxety5103_firmware","schneider-electric:tsxp574634_firmware","schneider-electric:tsxp575634_firmware","schneider-electric:tsxp576634_firmware"],"source":"nvd","synced_at":"2026-10-19T21:12:09.559580076+00:00"},"epss":{"cve":"CVE-2020-7540","score":0.02317,"percentile":0.83437,"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."]}