CVE-2011-4871

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{"affected": [{"affectedData": [{"product": "n/a", "vendor": "n/a", "versions": [{"status": "affected", "version": "n/a"}]}], "source": "cret@cert.org"}], "configurations": [{"nodes": [{"cpeMatch": [{"criteria": "cpe:2.3:a:opcsystems:opcsystems.net:*:*:*:*:*:*:*:*", "matchCriteriaId": "53CFC2C0-C136-4C67-B927-28F81600AEF8", "versionEndIncluding": "4.0", "vulnerable": true}], "negate": false, "operator": "OR"}]}], "cveTags": [], "descriptions": [{"lang": "en", "value": "Open Automation Software OPC Systems.NET before 5.0 allows remote attackers to cause a denial of service via a malformed .NET RPC packet on TCP port 58723."}, {"lang": "es", "value": "Open Automation Software OPC Systems.NET antes de v5.0, permite a atacantes remotos provocar una denegaci\u00f3n de servicio a trav\u00e9s de un paquete .NET RPC mal formado al puerto TCP 58723."}], "id": "CVE-2011-4871", "lastModified": "2026-06-16T23:35:33.017", "metrics": {"cvssMetricV2": [{"acInsufInfo": false, "baseSeverity": "MEDIUM", "cvssData": {"accessComplexity": "LOW", "accessVector": "NETWORK", "authentication": "NONE", "availabilityImpact": "PARTIAL", "baseScore": 5.0, "confidentialityImpact": "NONE", "integrityImpact": "NONE", "vectorString": "AV:N/AC:L/Au:N/C:N/I:N/A:P", "version": "2.0"}, "exploitabilityScore": 10.0, "impactScore": 2.9, "obtainAllPrivilege": false, "obtainOtherPrivilege": false, "obtainUserPrivilege": false, "source": "nvd@nist.gov", "type": "Primary", "userInteractionRequired": false}]}, "published": "2012-04-18T10:33:31.107", "references": [{"source": "cret@cert.org", "tags": ["US Government Resource"], "url": "http://www.us-cert.gov/control_systems/pdf/ICSA-12-012-01.pdf"}, {"source": "af854a3a-2127-422b-91ae-364da2661108", "tags": ["US Government Resource"], "url": "http://www.us-cert.gov/control_systems/pdf/ICSA-12-012-01.pdf"}], "sourceIdentifier": "cret@cert.org", "vulnStatus": "Modified", "weaknesses": [{"description": [{"lang": "en", "value": "CWE-20"}], "source": "nvd@nist.gov", "type": "Primary"}]}

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