{"id":"CVE-2021-34578","state":"PUBLISHED","title":"WAGO: Authentication Vulnerability in Web-Based Management","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.","publishedAt":"2021-08-31T10:33:01.868Z","updatedAt":"2024-09-16T18:33:25.112Z","severity":{"score":9.8,"label":"Critical","version":"3.1","vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H","source":"CERTVDE"},"assigner":"CERTVDE","products":["WAGO PLC"],"affected":[{"vendor":"WAGO","product":"PLC","versions":[{"version":"750-362","status":"affected","lessThanOrEqual":"FW07","versionType":"custom"},{"version":"750-363","status":"affected","lessThanOrEqual":"FW07","versionType":"custom"},{"version":"750-823","status":"affected","lessThanOrEqual":"FW07","versionType":"custom"},{"version":"750-832/xxx-xxx","status":"affected","lessThanOrEqual":"FW07","versionType":"custom"},{"version":"750-862","status":"affected","lessThanOrEqual":"FW07","versionType":"custom"},{"version":"750-891","status":"affected","lessThanOrEqual":"FW07","versionType":"custom"},{"version":"750-890/xxx-xxx","status":"affected","lessThanOrEqual":"FW07","versionType":"custom"},{"version":"750-893","status":"affected","lessThanOrEqual":"FW07","versionType":"custom"}]}],"references":["https://cert.vde.com/en-us/advisories/vde-2020-044"],"weaknesses":["CWE-287"],"ingestedAt":"2026-10-29T19:48:38.863Z","source":{"repository":"CVEProject/cvelistV5","path":"cves/2021/34xxx/CVE-2021-34578.json","commit":"556c9d3a8cd17e218bb8e452ba7cd619a384ff47"},"raw":{"dataType":"CVE_RECORD","dataVersion":"5.1","cveMetadata":{"cveId":"CVE-2021-34578","state":"PUBLISHED","datePublished":"2021-08-31T10:33:01.868Z","dateUpdated":"2024-09-16T18:33:25.112Z","assignerShortName":"CERTVDE","assignerOrgId":"270ccfa6-a436-4e77-922e-914ec3a9685c","dateReserved":"2021-06-10T00:00:00.000Z"},"containers":{"cna":{"title":"WAGO: Authentication Vulnerability in Web-Based Management","descriptions":[{"lang":"en","value":"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."}],"affected":[{"vendor":"WAGO","product":"PLC","versions":[{"version":"750-362","status":"affected","lessThanOrEqual":"FW07","versionType":"custom"},{"version":"750-363","status":"affected","lessThanOrEqual":"FW07","versionType":"custom"},{"version":"750-823","status":"affected","lessThanOrEqual":"FW07","versionType":"custom"},{"version":"750-832/xxx-xxx","status":"affected","lessThanOrEqual":"FW07","versionType":"custom"},{"version":"750-862","status":"affected","lessThanOrEqual":"FW07","versionType":"custom"},{"version":"750-891","status":"affected","lessThanOrEqual":"FW07","versionType":"custom"},{"version":"750-890/xxx-xxx","status":"affected","lessThanOrEqual":"FW07","versionType":"custom"},{"version":"750-893","status":"affected","lessThanOrEqual":"FW07","versionType":"custom"}]}],"references":[{"url":"https://cert.vde.com/en-us/advisories/vde-2020-044","tags":["x_refsource_CONFIRM"]}],"metrics":[{"cvssV3_1":{"attackComplexity":"LOW","attackVector":"NETWORK","availabilityImpact":"HIGH","baseScore":9.8,"baseSeverity":"CRITICAL","confidentialityImpact":"HIGH","integrityImpact":"HIGH","privilegesRequired":"NONE","scope":"UNCHANGED","userInteraction":"NONE","vectorString":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H","version":"3.1"}}],"problemTypes":[{"descriptions":[{"cweId":"CWE-287","description":"CWE-287 Improper Authentication","lang":"en","type":"CWE"}]}],"providerMetadata":{"shortName":"CERTVDE","dateUpdated":"2021-08-31T10:33:01.000Z","orgId":"270ccfa6-a436-4e77-922e-914ec3a9685c"},"credits":[{"lang":"en","value":"Maxim Rupp (https://rupp.it) reported this vulnerability to WAGO. 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