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CVE-2021-43877

Estado: ModificadaAlta (7.8)—

ASP.NET Core and Visual Studio Elevation of Privilege Vulnerability

CVSS

Probabilidad de explotación (EPSS)

EPSS (Exploit Prediction Scoring System, de FIRST) estima la probabilidad de que una vulnerabilidad sea explotada en 30 días. Complementa a CVSS (impacto) y a CISA KEV (explotación confirmada).

Tecnologías afectadas (3)

CWE

Referencias

JSON original (NVD)

Mostrar
{
  "id": "CVE-2021-43877",
  "cveTags": [],
  "metrics": {
    "cvssMetricV2": [
      {
        "type": "Primary",
        "source": "nvd@nist.gov",
        "cvssData": {
          "version": "2.0",
          "baseScore": 4.6,
          "accessVector": "LOCAL",
          "vectorString": "AV:L/AC:L/Au:N/C:P/I:P/A:P",
          "authentication": "NONE",
          "integrityImpact": "PARTIAL",
          "accessComplexity": "LOW",
          "availabilityImpact": "PARTIAL",
          "confidentialityImpact": "PARTIAL"
        },
        "acInsufInfo": false,
        "impactScore": 6.4,
        "baseSeverity": "MEDIUM",
        "obtainAllPrivilege": false,
        "exploitabilityScore": 3.9,
        "obtainUserPrivilege": false,
        "obtainOtherPrivilege": false,
        "userInteractionRequired": false
      }
    ],
    "cvssMetricV31": [
      {
        "type": "Secondary",
        "source": "secure@microsoft.com",
        "cvssData": {
          "scope": "CHANGED",
          "version": "3.1",
          "baseScore": 8.8,
          "attackVector": "LOCAL",
          "baseSeverity": "HIGH",
          "vectorString": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H",
          "integrityImpact": "HIGH",
          "userInteraction": "NONE",
          "attackComplexity": "LOW",
          "availabilityImpact": "HIGH",
          "privilegesRequired": "LOW",
          "confidentialityImpact": "HIGH"
        },
        "impactScore": 6,
        "exploitabilityScore": 2
      },
      {
        "type": "Secondary",
        "source": "nvd@nist.gov",
        "cvssData": {
          "scope": "UNCHANGED",
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          "attackVector": "LOCAL",
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          "vectorString": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H",
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          "attackComplexity": "LOW",
          "availabilityImpact": "HIGH",
          "privilegesRequired": "LOW",
          "confidentialityImpact": "HIGH"
        },
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        "exploitabilityScore": 1.8
      }
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  },
  "affected": [
    {
      "source": "secure@microsoft.com",
      "affectedData": [
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          ],
          "vendor": "Microsoft",
          "product": "Microsoft Visual Studio 2019 version 16.7 (includes 16.0 – 16.6)",
          "versions": [
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              "version": "16.0.0",
              "lessThan": "16.7.23",
              "versionType": "custom"
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          "platforms": [
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        },
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          ],
          "vendor": "Microsoft",
          "product": "Microsoft Visual Studio 2019 version 16.9 (includes 16.0 - 16.8)",
          "versions": [
            {
              "status": "affected",
              "version": "15.0.0",
              "lessThan": "16.9.15",
              "versionType": "custom"
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          "platforms": [
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          "vendor": "Microsoft",
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              "lessThan": "16.11.8",
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        },
        {
          "cpes": [
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          "vendor": "Microsoft",
          "product": "Microsoft Visual Studio 2022 version 17.0",
          "versions": [
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              "version": "17.0.0",
              "lessThan": "17.0.3",
              "versionType": "custom"
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          ]
        },
        {
          "cpes": [
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          ],
          "vendor": "Microsoft",
          "product": "ASP.NET Core 3.1",
          "versions": [
            {
              "status": "affected",
              "version": "3.0",
              "lessThan": "3.1.22",
              "versionType": "custom"
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          ],
          "platforms": [
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        },
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          "cpes": [
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          "vendor": "Microsoft",
          "product": "ASP.NET Core 5.0",
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              "version": "5.0",
              "lessThan": "5.0.13",
              "versionType": "custom"
            }
          ],
          "platforms": [
            "Unknown"
          ]
        },
        {
          "cpes": [
            "cpe:2.3:a:microsoft:asp.net_core:6.0:*:*:*:*:*:*:*"
          ],
          "vendor": "Microsoft",
          "product": "ASP.NET Core 6.0",
          "versions": [
            {
              "status": "affected",
              "version": "6.0",
              "lessThan": "6.0.101",
              "versionType": "custom"
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          ],
          "platforms": [
            "Unknown"
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        },
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          "vendor": "Microsoft",
          "product": "Microsoft Visual Studio 2022 version 17.1",
          "versions": [
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              "version": "17.0.0",
              "lessThan": "17.1.4",
              "versionType": "custom"
            }
          ],
          "platforms": [
            "Unknown"
          ]
        }
      ]
    }
  ],
  "published": "2021-12-15T15:15:10.950",
  "references": [
    {
      "url": "https://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2021-43877",
      "tags": [
        "Patch",
        "Vendor Advisory"
      ],
      "source": "secure@microsoft.com"
    },
    {
      "url": "https://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2021-43877",
      "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"
        }
      ]
    }
  ],
  "descriptions": [
    {
      "lang": "en",
      "value": "ASP.NET Core and Visual Studio Elevation of Privilege Vulnerability"
    },
    {
      "lang": "es",
      "value": "Una vulnerabilidad de Elevación de Privilegios en ASP.NET Core y Visual Studio"
    }
  ],
  "lastModified": "2026-06-17T04:11:36.427",
  "configurations": [
    {
      "nodes": [
        {
          "negate": false,
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            },
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  "sourceIdentifier": "secure@microsoft.com"
}