{"dataType":"CVE_RECORD","dataVersion":"5.1","cveMetadata":{"cveId":"CVE-2021-34566","assignerOrgId":"270ccfa6-a436-4e77-922e-914ec3a9685c","state":"PUBLISHED","assignerShortName":"CERTVDE","requesterUserId":"520cc88b-a1c8-44f6-9154-21a4d74c769f","dateReserved":"2021-06-10T19:19:08.023Z","datePublished":"2022-11-09T15:17:14.172Z","dateUpdated":"2025-05-01T14:21:10.643Z"},"containers":{"cna":{"affected":[{"defaultStatus":"unaffected","product":"750-81xx/xxx-xxxFW","vendor":"WAGO","versions":[{"lessThanOrEqual":"FW18 Patch 2","status":"affected","version":"FW1","versionType":"custom"}]},{"defaultStatus":"unaffected","product":"750-82xx/xxx-xxx","vendor":"WAGO","versions":[{"lessThanOrEqual":"FW18 Patch 2","status":"affected","version":"FW1","versionType":"custom"}]},{"defaultStatus":"unaffected","product":"752-8303/8000-0002","vendor":"WAGO","versions":[{"lessThanOrEqual":"FW18 Patch 2","status":"affected","version":"FW1","versionType":"custom"}]},{"defaultStatus":"unaffected","product":"762-4xxx","vendor":"WAGO","versions":[{"lessThanOrEqual":"FW18 Patch 2","status":"affected","version":"FW1","versionType":"custom"}]},{"defaultStatus":"unaffected","product":"762-5xxx","vendor":"WAGO","versions":[{"lessThanOrEqual":"FW18 Patch 2","status":"affected","version":"FW1","versionType":"custom"}]},{"defaultStatus":"unaffected","product":"762-6xxx","vendor":"WAGO","versions":[{"lessThanOrEqual":"FW18 Patch 2","status":"affected","version":"FW1","versionType":"custom"}]}],"credits":[{"lang":"en","type":"finder","user":"00000000-0000-4000-9000-000000000000","value":"These vulnerabilities were reported to WAGO by Uri Katz of Claroty."}],"datePublic":"2021-06-29T10:00:00.000Z","descriptions":[{"lang":"en","supportingMedia":[{"base64":false,"type":"text/html","value":"In WAGO I/O-Check Service in multiple products an unauthenticated remote attacker can send a specially crafted packet containing OS commands to crash the iocheck process and write memory resulting in loss of integrity and DoS."}],"value":"In WAGO I/O-Check Service in multiple products an unauthenticated remote attacker can send a specially crafted packet containing OS commands to crash the iocheck process and write memory resulting in loss of integrity and DoS."}],"impacts":[{"capecId":"CAPEC-100","descriptions":[{"lang":"en","value":"CAPEC-100 Overflow Buffers"}]}],"metrics":[{"cvssV3_1":{"attackComplexity":"LOW","attackVector":"NETWORK","availabilityImpact":"HIGH","baseScore":9.1,"baseSeverity":"CRITICAL","confidentialityImpact":"NONE","integrityImpact":"HIGH","privilegesRequired":"NONE","scope":"UNCHANGED","userInteraction":"NONE","vectorString":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:H","version":"3.1"},"format":"CVSS","scenarios":[{"lang":"en","value":"GENERAL"}]}],"problemTypes":[{"descriptions":[{"cweId":"CWE-120","description":"CWE-120 Buffer Copy without Checking Size of Input ('Classic Buffer Overflow')","lang":"en","type":"CWE"}]}],"providerMetadata":{"orgId":"270ccfa6-a436-4e77-922e-914ec3a9685c","shortName":"CERTVDE","dateUpdated":"2022-11-09T15:17:14.172Z"},"references":[{"url":"https://cert.vde.com/en/advisories/VDE-2020-036/"}],"source":{"advisory":"VDE-2020-036","discovery":"EXTERNAL"},"title":"WAGO I/O-Check Service prone to Memory Overflow","x_generator":{"engine":"Vulnogram 0.1.0-dev"}},"adp":[{"providerMetadata":{"orgId":"af854a3a-2127-422b-91ae-364da2661108","shortName":"CVE","dateUpdated":"2024-08-04T00:12:50.402Z"},"title":"CVE Program Container","references":[{"url":"https://cert.vde.com/en/advisories/VDE-2020-036/","tags":["x_transferred"]}]},{"metrics":[{"other":{"type":"ssvc","content":{"timestamp":"2025-05-01T14:21:03.913921Z","id":"CVE-2021-34566","options":[{"Exploitation":"none"},{"Automatable":"yes"},{"Technical Impact":"total"}],"role":"CISA Coordinator","version":"2.0.3"}}}],"title":"CISA ADP Vulnrichment","providerMetadata":{"orgId":"134c704f-9b21-4f2e-91b3-4a467353bcc0","shortName":"CISA-ADP","dateUpdated":"2025-05-01T14:21:10.643Z"}}]}}