{"cve":"CVE-2021-34578","nvd":{"published":"2021-08-31T11:15:07.777","modified":"2026-06-17T03:56:09.823","status":"Modified","description":"This vulnerability allows an attacker who has access to the WBM to read and write settings-parameters of the device by sending specifically constructed requests without authentication on multiple WAGO PLCs in firmware versions up to FW07.","cvss_v4":null,"cvss_v3":{"version":"3.1","vector":"CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H","score":8.1},"cwes":["CWE-287"],"references":["https://cert.vde.com/en-us/advisories/vde-2020-044","https://cert.vde.com/en-us/advisories/vde-2020-044"],"products":["wago:750-362_firmware","wago:750-363_firmware","wago:750-823_firmware","wago:750-832\\/000-002_firmware","wago:750-832_firmware","wago:750-862_firmware","wago:750-890\\/025-000_firmware","wago:750-890\\/025-001_firmware","wago:750-890\\/025-002_firmware","wago:750-890\\/040-000_firmware","wago:750-891_firmware","wago:750-893_firmware"],"source":"nvd","synced_at":"2026-10-19T21:21:57.125947417+00:00"},"epss":{"cve":"CVE-2021-34578","score":0.00963,"percentile":0.61672,"date":"2026-11-01"},"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."]}