CVE-2021-27432

{"containers": {"cna": {"affected": [{"product": "OPC Foundation OPC UA .NET Standard and OPC UA .NET Legacy", "vendor": "n/a", "versions": [{"status": "affected", "version": "OPC UA .NET Standard versions prior to 1.4.365.48 and OPC UA .NET Legacy"}]}], "descriptions": [{"lang": "en", "value": "OPC Foundation UA .NET Standard versions prior to 1.4.365.48 and OPC UA .NET Legacy are vulnerable to an uncontrolled recursion, which may allow an attacker to trigger a stack overflow."}], "problemTypes": [{"descriptions": [{"cweId": "CWE-674", "description": "UNCONTROLLED RECURSION CWE-674", "lang": "en", "type": "CWE"}]}], "providerMetadata": {"dateUpdated": "2021-05-20T15:20:01.000Z", "orgId": "7d14cffa-0d7d-4270-9dc0-52cabd5a23a6", "shortName": "icscert"}, "references": [{"tags": ["x_refsource_MISC"], "url": "https://us-cert.cisa.gov/ics/advisories/icsa-21-133-03"}], "x_legacyV4Record": {"CVE_data_meta": {"ASSIGNER": "ics-cert@hq.dhs.gov", "ID": "CVE-2021-27432", "STATE": "PUBLIC"}, "affects": {"vendor": {"vendor_data": [{"product": {"product_data": [{"product_name": "OPC Foundation OPC UA .NET Standard and OPC UA .NET Legacy", "version": {"version_data": [{"version_value": "OPC UA .NET Standard versions prior to 1.4.365.48 and OPC UA .NET Legacy"}]}}]}, "vendor_name": "n/a"}]}}, "data_format": "MITRE", "data_type": "CVE", "data_version": "4.0", "description": {"description_data": [{"lang": "eng", "value": "OPC Foundation UA .NET Standard versions prior to 1.4.365.48 and OPC UA .NET Legacy are vulnerable to an uncontrolled recursion, which may allow an attacker to trigger a stack overflow."}]}, "problemtype": {"problemtype_data": [{"description": [{"lang": "eng", "value": "UNCONTROLLED RECURSION CWE-674"}]}]}, "references": {"reference_data": [{"name": "https://us-cert.cisa.gov/ics/advisories/icsa-21-133-03", "refsource": "MISC", "url": "https://us-cert.cisa.gov/ics/advisories/icsa-21-133-03"}]}}}, "adp": [{"providerMetadata": {"orgId": "af854a3a-2127-422b-91ae-364da2661108", "shortName": "CVE", "dateUpdated": "2024-08-03T20:48:17.220Z"}, "title": "CVE Program Container", "references": [{"tags": ["x_refsource_MISC", "x_transferred"], "url": "https://us-cert.cisa.gov/ics/advisories/icsa-21-133-03"}]}]}, "cveMetadata": {"assignerOrgId": "7d14cffa-0d7d-4270-9dc0-52cabd5a23a6", "assignerShortName": "icscert", "cveId": "CVE-2021-27432", "datePublished": "2021-05-20T15:20:01.000Z", "dateReserved": "2021-02-19T00:00:00.000Z", "dateUpdated": "2024-08-03T20:48:17.220Z", "state": "PUBLISHED"}, "dataType": "CVE_RECORD", "dataVersion": "5.1"}

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{"affected": [{"affectedData": [{"product": "OPC Foundation OPC UA .NET Standard and OPC UA .NET Legacy", "vendor": "n/a", "versions": [{"status": "affected", "version": "OPC UA .NET Standard versions prior to 1.4.365.48 and OPC UA .NET Legacy"}]}], "source": "ics-cert@hq.dhs.gov"}], "configurations": [{"nodes": [{"cpeMatch": [{"criteria": "cpe:2.3:a:opcfoundation:ua-.net-legacy:-:*:*:*:*:*:*:*", "matchCriteriaId": "B04F956C-0D6B-453D-AA1B-4AB522B0C474", "vulnerable": true}, {"criteria": "cpe:2.3:a:opcfoundation:ua_.net_standard_stack:*:*:*:*:*:*:*:*", "matchCriteriaId": "2A02376A-04D5-48A2-9D3E-242FA6E3C00B", "versionEndExcluding": "1.4.365.48", "vulnerable": true}], "negate": false, "operator": "OR"}]}], "cveTags": [], "descriptions": [{"lang": "en", "value": "OPC Foundation UA .NET Standard versions prior to 1.4.365.48 and OPC UA .NET Legacy are vulnerable to an uncontrolled recursion, which may allow an attacker to trigger a stack overflow."}, {"lang": "es", "value": "OPC Foundation UA ??.NET Standard versiones anteriores a 1.4.365.48 y OPC UA .NET Legacy, son vulnerables a una recursividad no controlada, que puede permitir a un atacante desencadenar un desbordamiento de pila"}], "id": "CVE-2021-27432", "lastModified": "2026-06-17T03:44:51.080", "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}], "cvssMetricV31": [{"cvssData": {"attackComplexity": "LOW", "attackVector": "NETWORK", "availabilityImpact": "HIGH", "baseScore": 7.5, "baseSeverity": "HIGH", "confidentialityImpact": "NONE", "integrityImpact": "NONE", "privilegesRequired": "NONE", "scope": "UNCHANGED", "userInteraction": "NONE", "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H", "version": "3.1"}, "exploitabilityScore": 3.9, "impactScore": 3.6, "source": "nvd@nist.gov", "type": "Primary"}]}, "published": "2021-05-20T16:15:07.967", "references": [{"source": "ics-cert@hq.dhs.gov", "tags": ["Third Party Advisory", "US Government Resource"], "url": "https://us-cert.cisa.gov/ics/advisories/icsa-21-133-03"}, {"source": "af854a3a-2127-422b-91ae-364da2661108", "tags": ["Third Party Advisory", "US Government Resource"], "url": "https://us-cert.cisa.gov/ics/advisories/icsa-21-133-03"}], "sourceIdentifier": "ics-cert@hq.dhs.gov", "vulnStatus": "Modified", "weaknesses": [{"description": [{"lang": "en", "value": "CWE-674"}], "source": "ics-cert@hq.dhs.gov", "type": "Secondary"}]}

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