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CVE-2021-31181

Estado: ModificadaAlta (8.8)—💥 Exploit

Microsoft SharePoint Remote Code Execution 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).

💥 Exploits públicos

Hay código de explotación o plantillas de detección públicos. No es lo mismo que explotación activa confirmada (KEV), pero aumenta el riesgo: parchee con prioridad.

Tecnologías afectadas (3)

Microsoft — Sharepoint Enterprise ServerMicrosoft — Sharepoint FoundationMicrosoft — Sharepoint Server

CWE

Referencias

JSON original (NVD)

Mostrar
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  "id": "CVE-2021-31181",
  "cveTags": [],
  "metrics": {
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        "source": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
        "ssvcData": {
          "id": "CVE-2021-31181",
          "role": "CISA Coordinator",
          "options": [
            {
              "exploitation": "poc"
            },
            {
              "automatable": "no"
            },
            {
              "technicalImpact": "total"
            }
          ],
          "version": "2.0.3",
          "timestamp": "2025-02-28T20:29:08.328520Z"
        }
      }
    ],
    "cvssMetricV2": [
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        "source": "nvd@nist.gov",
        "cvssData": {
          "version": "2.0",
          "baseScore": 6.5,
          "accessVector": "NETWORK",
          "vectorString": "AV:N/AC:L/Au:S/C:P/I:P/A:P",
          "authentication": "SINGLE",
          "integrityImpact": "PARTIAL",
          "accessComplexity": "LOW",
          "availabilityImpact": "PARTIAL",
          "confidentialityImpact": "PARTIAL"
        },
        "acInsufInfo": false,
        "impactScore": 6.4,
        "baseSeverity": "MEDIUM",
        "obtainAllPrivilege": false,
        "exploitabilityScore": 8,
        "obtainUserPrivilege": false,
        "obtainOtherPrivilege": false,
        "userInteractionRequired": false
      }
    ],
    "cvssMetricV31": [
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        "type": "Secondary",
        "source": "secure@microsoft.com",
        "cvssData": {
          "scope": "UNCHANGED",
          "version": "3.1",
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          "attackVector": "NETWORK",
          "baseSeverity": "HIGH",
          "vectorString": "CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H",
          "integrityImpact": "HIGH",
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        },
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      },
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  },
  "affected": [
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      "affectedData": [
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          ],
          "vendor": "Microsoft",
          "product": "Microsoft SharePoint Enterprise Server 2016",
          "versions": [
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              "version": "16.0.0",
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          "vendor": "Microsoft",
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              "lessThan": "16.0.10374.20000",
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          "platforms": [
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          "vendor": "Microsoft",
          "product": "Microsoft SharePoint Foundation 2013 Service Pack 1",
          "versions": [
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              "version": "15.0.0",
              "lessThan": "15.0.5345.1000",
              "versionType": "custom"
            }
          ],
          "platforms": [
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          ]
        }
      ]
    }
  ],
  "published": "2021-05-11T19:15:09.837",
  "references": [
    {
      "url": "http://packetstormsecurity.com/files/163208/Microsoft-SharePoint-Unsafe-Control-And-ViewState-Remote-Code-Execution.html",
      "tags": [
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        "Third Party Advisory",
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      ],
      "source": "secure@microsoft.com"
    },
    {
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      "tags": [
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      ],
      "source": "secure@microsoft.com"
    },
    {
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      "tags": [
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      "source": "secure@microsoft.com"
    },
    {
      "url": "http://packetstormsecurity.com/files/163208/Microsoft-SharePoint-Unsafe-Control-And-ViewState-Remote-Code-Execution.html",
      "tags": [
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        "VDB Entry"
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      "source": "af854a3a-2127-422b-91ae-364da2661108"
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      "tags": [
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        "VDB Entry"
      ],
      "source": "af854a3a-2127-422b-91ae-364da2661108"
    },
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      "url": "https://packetstorm.news/files/id/163208",
      "source": "134c704f-9b21-4f2e-91b3-4a467353bcc0"
    }
  ],
  "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-94"
        }
      ]
    }
  ],
  "descriptions": [
    {
      "lang": "en",
      "value": "Microsoft SharePoint Remote Code Execution Vulnerability"
    },
    {
      "lang": "es",
      "value": "Una vulnerabilidad de Ejecución de Código Remota de Microsoft SharePoint"
    }
  ],
  "lastModified": "2026-06-17T03:51:23.817",
  "configurations": [
    {
      "nodes": [
        {
          "negate": false,
          "cpeMatch": [
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            },
            {
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            },
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              "matchCriteriaId": "6122D014-5BF1-4AF4-8B4D-80205ED7785E"
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          "operator": "OR"
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  ],
  "sourceIdentifier": "secure@microsoft.com"
}