{"id":"CVE-2021-27434","state":"PUBLISHED","title":"Products with Unified Automation .NET based OPC UA Client/Server SDK Bundle: Versions V3.0.7 and prior (.NET 4.5, 4.0, and 3.5 Framework versions only) are vulnerable to an uncontr","description":"Products with Unified Automation .NET based OPC UA Client/Server SDK Bundle: Versions V3.0.7 and prior (.NET 4.5, 4.0, and 3.5 Framework versions only) are vulnerable to an uncontrolled recursion, which may allow an attacker to trigger a stack overflow.","publishedAt":"2021-05-20T13:42:54.000Z","updatedAt":"2024-08-03T20:48:17.296Z","severity":null,"assigner":"icscert","products":["n/a OPC UA Products Built with the .NET Framework 4.5, 4.0, and 3.5"],"affected":[{"vendor":"n/a","product":"OPC UA Products Built with the .NET Framework 4.5, 4.0, and 3.5","versions":[{"version":"Unified Automation .NET based OPC UA Client/Server SDK Bundle: Versions V3.0.7 and prior (.NET 4.5, 4.0, and 3.5 Framework versions only)","status":"affected"}]}],"references":["https://us-cert.cisa.gov/ics/advisories/icsa-21-133-04"],"weaknesses":["CWE-200"],"ingestedAt":"2026-10-29T19:48:15.637Z","source":{"repository":"CVEProject/cvelistV5","path":"cves/2021/27xxx/CVE-2021-27434.json","commit":"556c9d3a8cd17e218bb8e452ba7cd619a384ff47"},"raw":{"dataType":"CVE_RECORD","dataVersion":"5.1","cveMetadata":{"cveId":"CVE-2021-27434","state":"PUBLISHED","datePublished":"2021-05-20T13:42:54.000Z","dateUpdated":"2024-08-03T20:48:17.296Z","assignerShortName":"icscert","assignerOrgId":"7d14cffa-0d7d-4270-9dc0-52cabd5a23a6","dateReserved":"2021-02-19T00:00:00.000Z"},"containers":{"cna":{"descriptions":[{"lang":"en","value":"Products with Unified Automation .NET based OPC UA Client/Server SDK Bundle: Versions V3.0.7 and prior (.NET 4.5, 4.0, and 3.5 Framework versions only) are vulnerable to an uncontrolled recursion, which may allow an attacker to trigger a stack overflow."}],"affected":[{"vendor":"n/a","product":"OPC UA Products Built with the .NET Framework 4.5, 4.0, and 3.5","versions":[{"version":"Unified Automation .NET based OPC UA Client/Server SDK Bundle: Versions V3.0.7 and prior (.NET 4.5, 4.0, and 3.5 Framework versions only)","status":"affected"}]}],"references":[{"url":"https://us-cert.cisa.gov/ics/advisories/icsa-21-133-04","tags":["x_refsource_MISC"]}],"problemTypes":[{"descriptions":[{"cweId":"CWE-200","description":"EXPOSURE OF SENSITIVE INFORMATION TO AN UNAUTHORIZED ACTOR CWE-200","lang":"en","type":"CWE"}]}],"providerMetadata":{"shortName":"icscert","dateUpdated":"2021-05-20T13:42:54.000Z","orgId":"7d14cffa-0d7d-4270-9dc0-52cabd5a23a6"},"x_legacyV4Record":{"CVE_data_meta":{"ASSIGNER":"ics-cert@hq.dhs.gov","ID":"CVE-2021-27434","STATE":"PUBLIC"},"affects":{"vendor":{"vendor_data":[{"product":{"product_data":[{"product_name":"OPC UA Products Built with the .NET Framework 4.5, 4.0, and 3.5","version":{"version_data":[{"version_value":"Unified Automation .NET based OPC UA Client/Server SDK Bundle: Versions V3.0.7 and prior (.NET 4.5, 4.0, and 3.5 Framework versions only)"}]}}]},"vendor_name":"n/a"}]}},"data_format":"MITRE","data_type":"CVE","data_version":"4.0","description":{"description_data":[{"lang":"eng","value":"Products with Unified Automation .NET based OPC UA Client/Server SDK Bundle: Versions V3.0.7 and prior (.NET 4.5, 4.0, and 3.5 Framework versions only) are vulnerable to an uncontrolled recursion, which may allow an attacker to trigger a stack overflow."}]},"problemtype":{"problemtype_data":[{"description":[{"lang":"eng","value":"EXPOSURE OF SENSITIVE INFORMATION TO AN UNAUTHORIZED ACTOR CWE-200"}]}]},"references":{"reference_data":[{"name":"https://us-cert.cisa.gov/ics/advisories/icsa-21-133-04","refsource":"MISC","url":"https://us-cert.cisa.gov/ics/advisories/icsa-21-133-04"}]}}},"adp":[{"title":"CVE Program Container","references":[{"url":"https://us-cert.cisa.gov/ics/advisories/icsa-21-133-04","tags":["x_refsource_MISC","x_transferred"]}],"providerMetadata":{"shortName":"CVE","orgId":"af854a3a-2127-422b-91ae-364da2661108","dateUpdated":"2024-08-03T20:48:17.296Z"}}]}}}