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CVE-2019-1109

Estado: ModificadaCrítica (9.1)—

A spoofing vulnerability exists when Microsoft Office Javascript does not check the validity of the web page making a request to Office documents.An attacker who successfully exploited this vulnerability could read or write information in Office documents.The security update addresses the vulnerability by correcting the way that Microsoft Office Javascript verifies trusted web pages., aka 'Microsoft Office Spoofing 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 (2)

Microsoft — OfficeMicrosoft — Office 365

CWE

Referencias

JSON original (NVD)

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{
  "id": "CVE-2019-1109",
  "cveTags": [],
  "metrics": {
    "cvssMetricV2": [
      {
        "type": "Primary",
        "source": "nvd@nist.gov",
        "cvssData": {
          "version": "2.0",
          "baseScore": 6.4,
          "accessVector": "NETWORK",
          "vectorString": "AV:N/AC:L/Au:N/C:P/I:P/A:N",
          "authentication": "NONE",
          "integrityImpact": "PARTIAL",
          "accessComplexity": "LOW",
          "availabilityImpact": "NONE",
          "confidentialityImpact": "PARTIAL"
        },
        "acInsufInfo": false,
        "impactScore": 4.9,
        "baseSeverity": "MEDIUM",
        "obtainAllPrivilege": false,
        "exploitabilityScore": 10,
        "obtainUserPrivilege": false,
        "obtainOtherPrivilege": false,
        "userInteractionRequired": false
      }
    ],
    "cvssMetricV30": [
      {
        "type": "Primary",
        "source": "nvd@nist.gov",
        "cvssData": {
          "scope": "UNCHANGED",
          "version": "3.0",
          "baseScore": 9.1,
          "attackVector": "NETWORK",
          "baseSeverity": "CRITICAL",
          "vectorString": "CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:N",
          "integrityImpact": "HIGH",
          "userInteraction": "NONE",
          "attackComplexity": "LOW",
          "availabilityImpact": "NONE",
          "privilegesRequired": "NONE",
          "confidentialityImpact": "HIGH"
        },
        "impactScore": 5.2,
        "exploitabilityScore": 3.9
      }
    ]
  },
  "affected": [
    {
      "source": "secure@microsoft.com",
      "affectedData": [
        {
          "vendor": "Microsoft",
          "product": "Microsoft Office",
          "versions": [
            {
              "status": "affected",
              "version": "2013 Service Pack 1 (32-bit editions)"
            },
            {
              "status": "affected",
              "version": "2013 Service Pack 1 (64-bit editions)"
            },
            {
              "status": "affected",
              "version": "2013 RT Service Pack 1"
            },
            {
              "status": "affected",
              "version": "2016 (32-bit edition)"
            },
            {
              "status": "affected",
              "version": "2016 (64-bit edition)"
            },
            {
              "status": "affected",
              "version": "2019 for 32-bit editions"
            },
            {
              "status": "affected",
              "version": "2019 for 64-bit editions"
            }
          ]
        },
        {
          "vendor": "Microsoft",
          "product": "Office 365 ProPlus",
          "versions": [
            {
              "status": "affected",
              "version": "32-bit Systems"
            },
            {
              "status": "affected",
              "version": "64-bit Systems"
            }
          ]
        }
      ]
    }
  ],
  "published": "2019-07-15T19:15:19.763",
  "references": [
    {
      "url": "https://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2019-1109",
      "tags": [
        "Patch",
        "Vendor Advisory"
      ],
      "source": "secure@microsoft.com"
    },
    {
      "url": "https://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2019-1109",
      "tags": [
        "Patch",
        "Vendor Advisory"
      ],
      "source": "af854a3a-2127-422b-91ae-364da2661108"
    }
  ],
  "vulnStatus": "Modified",
  "weaknesses": [
    {
      "type": "Primary",
      "source": "nvd@nist.gov",
      "description": [
        {
          "lang": "en",
          "value": "CWE-20"
        }
      ]
    }
  ],
  "descriptions": [
    {
      "lang": "en",
      "value": "A spoofing vulnerability exists when Microsoft Office Javascript does not check the validity of the web page making a request to Office documents.An attacker who successfully exploited this vulnerability could read or write information in Office documents.The security update addresses the vulnerability by correcting the way that Microsoft Office Javascript verifies trusted web pages., aka 'Microsoft Office Spoofing Vulnerability'."
    },
    {
      "lang": "es",
      "value": "Existe una vulnerabilidad de suplantación de identidad cuando Microsoft Office Javascript no comprueba la validez de la página web que realiza una solicitud a documentos de Office. Un atacante que aprovechó esta vulnerabilidad podría leer o escribir información en documentos de Office. La actualización de seguridad subsana la vulnerabilidad al corregir la forma que Microsoft Office Javascript verifica las páginas web de confianza, también se conoce como 'Microsoft Office Spoofing Vulnerability'."
    }
  ],
  "lastModified": "2026-06-17T02:27:50.820",
  "configurations": [
    {
      "nodes": [
        {
          "negate": false,
          "cpeMatch": [
            {
              "criteria": "cpe:2.3:a:microsoft:office:2013:sp1:*:*:*:*:*:*",
              "vulnerable": true,
              "matchCriteriaId": "120690A6-E0A1-4E36-A35A-C87109ECC064"
            },
            {
              "criteria": "cpe:2.3:a:microsoft:office:2013:sp1:*:*:rt:*:*:*",
              "vulnerable": true,
              "matchCriteriaId": "F7DDFFB8-2337-4DD7-8120-56CC8EF134B4"
            },
            {
              "criteria": "cpe:2.3:a:microsoft:office:2016:*:*:*:*:*:*:*",
              "vulnerable": true,
              "matchCriteriaId": "E0B3B0BC-C7C6-4687-AD72-DCA29FF9AE3A"
            },
            {
              "criteria": "cpe:2.3:a:microsoft:office:2019:*:*:*:*:*:*:*",
              "vulnerable": true,
              "matchCriteriaId": "FF177984-A906-43FA-BF60-298133FBBD6B"
            },
            {
              "criteria": "cpe:2.3:a:microsoft:office_365:-:*:*:*:proplus:*:*:*",
              "vulnerable": true,
              "matchCriteriaId": "42B167E5-746F-457D-821D-42EF3E3CD8B7"
            }
          ],
          "operator": "OR"
        }
      ]
    }
  ],
  "sourceIdentifier": "secure@microsoft.com"
}