CVE-2021-31957

{"id": "CVE-2021-31957", "cveTags": [], "metrics": {"ssvcV203": [{"source": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "ssvcData": {"id": "CVE-2021-31957", "role": "CISA Coordinator", "options": [{"exploitation": "none"}, {"automatable": "no"}, {"technicalImpact": "partial"}], "version": "2.0.3", "timestamp": "2026-10-07T16:11:27.626727Z"}}], "cvssMetricV2": [{"type": "Primary", "source": "nvd@nist.gov", "cvssData": {"version": "2.0", "baseScore": 5.0, "accessVector": "NETWORK", "vectorString": "AV:N/AC:L/Au:N/C:N/I:N/A:P", "authentication": "NONE", "integrityImpact": "NONE", "accessComplexity": "LOW", "availabilityImpact": "PARTIAL", "confidentialityImpact": "NONE"}, "acInsufInfo": false, "impactScore": 2.9, "baseSeverity": "MEDIUM", "obtainAllPrivilege": false, "exploitabilityScore": 10.0, "obtainUserPrivilege": false, "obtainOtherPrivilege": false, "userInteractionRequired": false}], "cvssMetricV31": [{"type": "Secondary", "source": "secure@microsoft.com", "cvssData": {"scope": "UNCHANGED", "version": "3.1", "baseScore": 5.9, "attackVector": "NETWORK", "baseSeverity": "MEDIUM", "vectorString": "CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:H", "integrityImpact": "NONE", "userInteraction": "NONE", "attackComplexity": "HIGH", "availabilityImpact": "HIGH", "privilegesRequired": "NONE", "confidentialityImpact": "NONE"}, "impactScore": 3.6, "exploitabilityScore": 2.2}, {"type": "Secondary", "source": "nvd@nist.gov", "cvssData": {"scope": "UNCHANGED", "version": "3.1", "baseScore": 7.5, "attackVector": "NETWORK", "baseSeverity": "HIGH", "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H", "integrityImpact": "NONE", "userInteraction": "NONE", "attackComplexity": "LOW", "availabilityImpact": "HIGH", "privilegesRequired": "NONE", "confidentialityImpact": "NONE"}, "impactScore": 3.6, "exploitabilityScore": 3.9}]}, "affected": [{"source": "secure@microsoft.com", "affectedData": [{"cpes": ["cpe:2.3:a:microsoft:visual_studio_2019:*:*:*:*:*:*:*:*"], "vendor": "Microsoft", "product": "Microsoft Visual Studio 2019 version 16.4 (includes 16.0 - 16.3)", "versions": [{"status": "affected", "version": "16.0", "lessThan": "16.4.23", "versionType": "custom"}], "platforms": ["Unknown"]}, {"cpes": ["cpe:2.3:a:microsoft:visual_studio_2019:*:*:*:*:*:*:*:*"], "vendor": "Microsoft", "product": "Microsoft Visual Studio 2019 version 16.7 (includes 16.0 \u2013 16.6)", "versions": [{"status": "affected", "version": "16.0.0", "lessThan": "16.7.16", "versionType": "custom"}], "platforms": ["Unknown"]}, {"cpes": ["cpe:2.3:a:microsoft:visual_studio_2019:16.9:*:*:*:*:*:*:*"], "vendor": "Microsoft", "product": "Microsoft Visual Studio 2019 version 16.9 (includes 16.0 - 16.8)", "versions": [{"status": "affected", "version": "15.0.0", "lessThan": "16.9.7", "versionType": "custom"}], "platforms": ["Unknown"]}, {"cpes": ["cpe:2.3:a:microsoft:visual_studio_2019:*:*:*:*:*:*:*:*"], "vendor": "Microsoft", "product": "Microsoft Visual Studio 2019 version 16.10 (includes 16.0 - 16.9)", "versions": [{"status": "affected", "version": "16.10.0", "lessThan": "16.10.1", "versionType": "custom"}], "platforms": ["Unknown"]}, {"cpes": ["cpe:2.3:a:microsoft:visual_studio_2019:8.10:*:*:*:*:macos:*:*"], "vendor": "Microsoft", "product": "Visual Studio 2019 for Mac version 8.10", "versions": [{"status": "affected", "version": "8.1.0", "lessThan": "8.10.1", "versionType": "custom"}], "platforms": ["Unknown"]}, {"cpes": ["cpe:2.3:a:microsoft:.net_core:*:*:*:*:*:*:*:*"], "vendor": "Microsoft", "product": ".NET Core 3.1", "versions": [{"status": "affected", "version": "3.1", "lessThan": "3.1.16", "versionType": "custom"}], "platforms": ["Unknown"]}, {"cpes": ["cpe:2.3:a:microsoft:.net:*:*:*:*:*:*:*:*"], "vendor": "Microsoft", "product": ".NET 5.0", "versions": [{"status": "affected", "version": "5.0.0", "lessThan": "5.0.7", "versionType": "custom"}], "platforms": ["Unknown"]}]}], "published": "2021-06-08T23:15:08.870", "references": [{"url": "https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/4PRVVLXXQEF4SEJOBV3VRJHGX7YHY2CG/", "source": "secure@microsoft.com"}, {"url": "https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/CVCDYIP4A6DDRT7G6P3ZW6PKNK2DNWJ2/", "source": "secure@microsoft.com"}, {"url": "https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/PMHWHRRYDHKM6BIINW5V7OCSW4SDWB4W/", "source": "secure@microsoft.com"}, {"url": "https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/VMAO4NG2OQ4PCXUQWMNSCMYWLIJJY6UY/", "source": "secure@microsoft.com"}, {"url": "https://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2021-31957", "tags": ["Patch", "Vendor Advisory"], "source": "secure@microsoft.com"}, {"url": "https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/4PRVVLXXQEF4SEJOBV3VRJHGX7YHY2CG/", "source": "af854a3a-2127-422b-91ae-364da2661108"}, {"url": "https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/CVCDYIP4A6DDRT7G6P3ZW6PKNK2DNWJ2/", "source": "af854a3a-2127-422b-91ae-364da2661108"}, {"url": "https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/PMHWHRRYDHKM6BIINW5V7OCSW4SDWB4W/", "source": "af854a3a-2127-422b-91ae-364da2661108"}, {"url": "https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/VMAO4NG2OQ4PCXUQWMNSCMYWLIJJY6UY/", "source": "af854a3a-2127-422b-91ae-364da2661108"}, {"url": "https://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2021-31957", "tags": ["Patch", "Vendor Advisory"], "source": "af854a3a-2127-422b-91ae-364da2661108"}], "vulnStatus": "Modified", "weaknesses": [{"type": "Primary", "source": "nvd@nist.gov", "description": [{"lang": "en", "value": "NVD-CWE-noinfo"}]}, {"type": "Secondary", "source": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "description": [{"lang": "en", "value": "CWE-400"}]}], "descriptions": [{"lang": "en", "value": "ASP.NET Core Denial of Service Vulnerability"}, {"lang": "es", "value": "Una vulnerabilidad de Denegaci\u00f3n de Servicio en ASP.NET"}], "lastModified": "2026-10-07T17:16:42.677", "configurations": [{"nodes": [{"negate": false, "cpeMatch": [{"criteria": "cpe:2.3:a:microsoft:.net:*:*:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "09FFD881-EFC6-4918-9371-47F782F9D308", "versionEndIncluding": "5.0.6", "versionStartIncluding": "5.0"}, {"criteria": "cpe:2.3:a:microsoft:.net_core:*:*:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "97588832-160B-4882-B286-0906733CEEB2", "versionEndIncluding": "3.1.15", "versionStartIncluding": "3.1"}, {"criteria": "cpe:2.3:a:microsoft:visual_studio_2019:*:*:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "26472C42-CDB4-4176-B10B-3BF26F5030E3", "versionEndIncluding": "16.10", "versionStartIncluding": "16.0"}, {"criteria": "cpe:2.3:a:microsoft:visual_studio_2019:8.10:*:*:*:*:macos:*:*", "vulnerable": true, "matchCriteriaId": "BA547FFE-D557-4612-9840-EEE88ACF53AA"}], "operator": "OR"}]}, {"nodes": [{"negate": false, "cpeMatch": [{"criteria": "cpe:2.3:o:fedoraproject:fedora:33:*:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "E460AA51-FCDA-46B9-AE97-E6676AA5E194"}, {"criteria": "cpe:2.3:o:fedoraproject:fedora:34:*:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "A930E247-0B43-43CB-98FF-6CE7B8189835"}], "operator": "OR"}]}], "sourceIdentifier": "secure@microsoft.com"}