{"affected": [{"affectedData": [{"cpes": ["cpe:2.3:a:microsoft:visual_studio_2019:*:*:*:*:*:*:*:*"], "platforms": ["Unknown"], "product": "Microsoft Visual Studio 2019 version 16.7 (includes 16.0 \u2013 16.6)", "vendor": "Microsoft", "versions": [{"lessThan": "16.7.23", "status": "affected", "version": "16.0.0", "versionType": "custom"}]}, {"cpes": ["cpe:2.3:a:microsoft:visual_studio_2019:16.9:*:*:*:*:*:*:*"], "platforms": ["Unknown"], "product": "Microsoft Visual Studio 2019 version 16.9 (includes 16.0 - 16.8)", "vendor": "Microsoft", "versions": [{"lessThan": "16.9.15", "status": "affected", "version": "15.0.0", "versionType": "custom"}]}, {"cpes": ["cpe:2.3:a:microsoft:visual_studio_2019:*:*:*:*:*:*:*:*"], "platforms": ["Unknown"], "product": "Microsoft Visual Studio 2019 version 16.11 (includes 16.0 - 16.10)", "vendor": "Microsoft", "versions": [{"lessThan": "16.11.8", "status": "affected", "version": "16.11.0", "versionType": "custom"}]}, {"cpes": 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"cpe:2.3:a:microsoft:visual_studio_2019:16.9:*:*:*:*:*:*:*", "matchCriteriaId": "DF6CF9B0-D279-42CD-A84D-48327F44422D", "vulnerable": true}, {"criteria": "cpe:2.3:a:microsoft:visual_studio_2019:16.11:*:*:*:*:*:*:*", "matchCriteriaId": "99E7DAC9-17EF-40D4-AEEC-C24970B7190F", "vulnerable": true}, {"criteria": "cpe:2.3:a:microsoft:visual_studio_2022:17.0:*:*:*:*:*:*:*", "matchCriteriaId": "3393F97F-05CD-4B04-A6E1-3D914652C4E5", "vulnerable": true}], "negate": false, "operator": "OR"}]}], "cveTags": [], "descriptions": [{"lang": "en", "value": "ASP.NET Core and Visual Studio Elevation of Privilege Vulnerability"}, {"lang": "es", "value": "Una vulnerabilidad de Elevaci\u00f3n de Privilegios en ASP.NET Core y Visual Studio"}], "id": "CVE-2021-43877", "lastModified": "2026-11-02T19:17:45.860", "metrics": {"cvssMetricV2": [{"acInsufInfo": false, "baseSeverity": "MEDIUM", "cvssData": {"accessComplexity": "LOW", "accessVector": "LOCAL", "authentication": "NONE", "availabilityImpact": "PARTIAL", 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"confidentialityImpact": "HIGH", "integrityImpact": "HIGH", "privilegesRequired": "LOW", "scope": "UNCHANGED", "userInteraction": "NONE", "vectorString": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H", "version": "3.1"}, "exploitabilityScore": 1.8, "impactScore": 5.9, "source": "nvd@nist.gov", "type": "Secondary"}], "ssvcV203": [{"source": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "ssvcData": {"id": "CVE-2021-43877", "options": [{"exploitation": "none"}, {"automatable": "no"}, {"technicalImpact": "total"}], "role": "CISA Coordinator", "timestamp": "2026-10-08T21:01:44.367867Z", "version": "2.0.3"}}]}, "published": "2021-12-15T15:15:10.950", "references": [{"source": "secure@microsoft.com", "tags": ["Patch", "Vendor Advisory"], "url": "https://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2021-43877"}, {"source": "af854a3a-2127-422b-91ae-364da2661108", "tags": ["Patch", "Vendor Advisory"], "url": "https://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2021-43877"}], "sourceIdentifier": "secure@microsoft.com", "vulnStatus": "Modified", "weaknesses": [{"description": [{"lang": "en", "value": "NVD-CWE-noinfo"}], "source": "nvd@nist.gov", "type": "Primary"}]}