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CVE-2021-31949

Estado: ModificadaAlta (7.8)—

Microsoft Outlook 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).

Tecnologías afectadas (3)

Microsoft — 365 AppsMicrosoft — OfficeMicrosoft — Outlook

CWE

Referencias

JSON original (NVD)

Mostrar
{
  "id": "CVE-2021-31949",
  "cveTags": [],
  "metrics": {
    "ssvcV203": [
      {
        "source": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
        "ssvcData": {
          "id": "CVE-2021-31949",
          "role": "CISA Coordinator",
          "options": [
            {
              "exploitation": "none"
            },
            {
              "automatable": "no"
            },
            {
              "technicalImpact": "total"
            }
          ],
          "version": "2.0.3",
          "timestamp": "2025-02-28T20:24:07.337608Z"
        }
      }
    ],
    "cvssMetricV2": [
      {
        "type": "Primary",
        "source": "nvd@nist.gov",
        "cvssData": {
          "version": "2.0",
          "baseScore": 6.8,
          "accessVector": "NETWORK",
          "vectorString": "AV:N/AC:M/Au:N/C:P/I:P/A:P",
          "authentication": "NONE",
          "integrityImpact": "PARTIAL",
          "accessComplexity": "MEDIUM",
          "availabilityImpact": "PARTIAL",
          "confidentialityImpact": "PARTIAL"
        },
        "acInsufInfo": false,
        "impactScore": 6.4,
        "baseSeverity": "MEDIUM",
        "obtainAllPrivilege": false,
        "exploitabilityScore": 8.6,
        "obtainUserPrivilege": false,
        "obtainOtherPrivilege": false,
        "userInteractionRequired": true
      }
    ],
    "cvssMetricV31": [
      {
        "type": "Secondary",
        "source": "secure@microsoft.com",
        "cvssData": {
          "scope": "UNCHANGED",
          "version": "3.1",
          "baseScore": 7.3,
          "attackVector": "LOCAL",
          "baseSeverity": "HIGH",
          "vectorString": "CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:L",
          "integrityImpact": "HIGH",
          "userInteraction": "REQUIRED",
          "attackComplexity": "LOW",
          "availabilityImpact": "LOW",
          "privilegesRequired": "NONE",
          "confidentialityImpact": "HIGH"
        },
        "impactScore": 5.5,
        "exploitabilityScore": 1.8
      },
      {
        "type": "Secondary",
        "source": "nvd@nist.gov",
        "cvssData": {
          "scope": "UNCHANGED",
          "version": "3.1",
          "baseScore": 7.8,
          "attackVector": "LOCAL",
          "baseSeverity": "HIGH",
          "vectorString": "CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H",
          "integrityImpact": "HIGH",
          "userInteraction": "REQUIRED",
          "attackComplexity": "LOW",
          "availabilityImpact": "HIGH",
          "privilegesRequired": "NONE",
          "confidentialityImpact": "HIGH"
        },
        "impactScore": 5.9,
        "exploitabilityScore": 1.8
      }
    ]
  },
  "affected": [
    {
      "source": "secure@microsoft.com",
      "affectedData": [
        {
          "cpes": [
            "cpe:2.3:a:microsoft:office:2019:*:*:*:*:*:*:*"
          ],
          "vendor": "Microsoft",
          "product": "Microsoft Office 2019",
          "versions": [
            {
              "status": "affected",
              "version": "19.0.0",
              "lessThan": "https://aka.ms/OfficeSecurityReleases",
              "versionType": "custom"
            }
          ],
          "platforms": [
            "32-bit Systems",
            "x64-based Systems"
          ]
        },
        {
          "cpes": [
            "cpe:2.3:a:microsoft:365_apps:-:*:*:*:enterprise:*:*:*"
          ],
          "vendor": "Microsoft",
          "product": "Microsoft 365 Apps for Enterprise",
          "versions": [
            {
              "status": "affected",
              "version": "16.0.1",
              "lessThan": "https://aka.ms/OfficeSecurityReleases",
              "versionType": "custom"
            }
          ],
          "platforms": [
            "32-bit Systems",
            "x64-based Systems"
          ]
        },
        {
          "cpes": [
            "cpe:2.3:a:microsoft:outlook:2016:*:*:*:*:x86:*:*",
            "cpe:2.3:a:microsoft:outlook:2016:*:*:*:*:x64:*:*"
          ],
          "vendor": "Microsoft",
          "product": "Microsoft Outlook 2016",
          "versions": [
            {
              "status": "affected",
              "version": "16.0.0.0",
              "lessThan": "16.0.5356.1000.",
              "versionType": "custom"
            }
          ],
          "platforms": [
            "32-bit Systems",
            "x64-based Systems"
          ]
        },
        {
          "cpes": [
            "cpe:2.3:a:microsoft:outlook:2013:*:*:*:*:x86:*:*",
            "cpe:2.3:a:microsoft:outlook:2013:*:*:*:*:*:x64:*",
            "cpe:2.3:a:microsoft:outlook:2013:*:*:*:rt:*:*:*"
          ],
          "vendor": "Microsoft",
          "product": "Microsoft Outlook 2013 Service Pack 1",
          "versions": [
            {
              "status": "affected",
              "version": "15.0.0.0",
              "lessThan": "15.0.5475.1000",
              "versionType": "custom"
            }
          ],
          "platforms": [
            "32-bit Systems",
            "x64-based Systems",
            "ARM64-based Systems"
          ]
        }
      ]
    }
  ],
  "published": "2021-06-08T23:15:08.673",
  "references": [
    {
      "url": "https://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2021-31949",
      "tags": [
        "Patch",
        "Vendor Advisory"
      ],
      "source": "secure@microsoft.com"
    },
    {
      "url": "https://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2021-31949",
      "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-94"
        }
      ]
    }
  ],
  "descriptions": [
    {
      "lang": "en",
      "value": "Microsoft Outlook Remote Code Execution Vulnerability"
    },
    {
      "lang": "es",
      "value": "Una vulnerabilidad de Ejecución de Código Remota en Microsoft Outlook"
    }
  ],
  "lastModified": "2026-06-17T03:52:32.960",
  "configurations": [
    {
      "nodes": [
        {
          "negate": false,
          "cpeMatch": [
            {
              "criteria": "cpe:2.3:a:microsoft:365_apps:-:*:*:*:enterprise:*:*:*",
              "vulnerable": true,
              "matchCriteriaId": "40C15EDD-98D4-4D06-BA06-21AE0F33C72D"
            },
            {
              "criteria": "cpe:2.3:a:microsoft:office:2019:*:*:*:*:*:*:*",
              "vulnerable": true,
              "matchCriteriaId": "FF177984-A906-43FA-BF60-298133FBBD6B"
            },
            {
              "criteria": "cpe:2.3:a:microsoft:outlook:2013:sp1:*:*:-:*:*:*",
              "vulnerable": true,
              "matchCriteriaId": "8D513A61-6427-4F85-AADF-99D6F223AF2B"
            },
            {
              "criteria": "cpe:2.3:a:microsoft:outlook:2013:sp1:*:*:rt:*:*:*",
              "vulnerable": true,
              "matchCriteriaId": "DDA98A76-D0D1-4BFA-BEAC-1C2313F7B859"
            },
            {
              "criteria": "cpe:2.3:a:microsoft:outlook:2016:*:*:*:*:*:*:*",
              "vulnerable": true,
              "matchCriteriaId": "E2B1657C-0FF4-461A-BE2A-641275C4B0A0"
            }
          ],
          "operator": "OR"
        }
      ]
    }
  ],
  "sourceIdentifier": "secure@microsoft.com"
}