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CVE-2025-53759

Estado: AnalizadaAlta (7.8)—

Use of uninitialized resource in Microsoft Office Excel allows an unauthorized attacker to execute code locally.

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).

🎯 Técnicas ATT&CK

Cómo se explota esta vulnerabilidad y qué consigue el atacante, en el lenguaje de MITRE ATT&CK.

AV:L + UI:R indica ejecución en el cliente; archivo preparado de Excel dispara el defecto CWE-908 (recurso no inicializado) permitiendo RCE. Acceso a datos locales posible tras ejecución.

Inferido por nuestro agente de análisis a partir de la descripción oficial, el vector CVSS y la CWE, y comprobado por un supervisor. Puede contener errores.

🛡️ Mitigaciones ATT&CK que cubren estas técnicas

Restrict Web-Based ContentPrivileged Account ManagementLimit Software InstallationExecution PreventionBehavior Prevention on EndpointDisable or Remove Feature or Program

Tecnologías afectadas (4)

Microsoft — 365 AppsMicrosoft — OfficeMicrosoft — Office Long Term Servicing ChannelMicrosoft — Office Online Server

CWE

Referencias

JSON original (NVD)

Mostrar
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          "id": "CVE-2025-53759",
          "role": "CISA Coordinator",
          "options": [
            {
              "exploitation": "none"
            },
            {
              "automatable": "no"
            },
            {
              "technicalImpact": "total"
            }
          ],
          "version": "2.0.3",
          "timestamp": "2025-08-13T15:02:47.223439Z"
        }
      }
    ],
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          "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": [
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      "affectedData": [
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          "versions": [
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              "version": "16.0.0",
              "lessThan": "https://aka.ms/OfficeSecurityReleases",
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            }
          ],
          "platforms": [
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        {
          "vendor": "Microsoft",
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          "versions": [
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              "versionType": "custom"
            }
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        },
        {
          "vendor": "Microsoft",
          "product": "Microsoft Office LTSC for Mac 2024",
          "versions": [
            {
              "status": "affected",
              "version": "16.0.0",
              "lessThan": "16.100.25081015",
              "versionType": "custom"
            }
          ]
        },
        {
          "vendor": "Microsoft",
          "product": "Office Online Server",
          "versions": [
            {
              "status": "affected",
              "version": "16.0.0.0",
              "lessThan": "16.0.10417.20034",
              "versionType": "custom"
            }
          ]
        }
      ]
    }
  ],
  "published": "2025-08-12T18:15:44.777",
  "references": [
    {
      "url": "https://msrc.microsoft.com/update-guide/vulnerability/CVE-2025-53759",
      "tags": [
        "Vendor Advisory"
      ],
      "source": "secure@microsoft.com"
    }
  ],
  "vulnStatus": "Analyzed",
  "weaknesses": [
    {
      "type": "Secondary",
      "source": "secure@microsoft.com",
      "description": [
        {
          "lang": "en",
          "value": "CWE-908"
        }
      ]
    }
  ],
  "descriptions": [
    {
      "lang": "en",
      "value": "Use of uninitialized resource in Microsoft Office Excel allows an unauthorized attacker to execute code locally."
    },
    {
      "lang": "es",
      "value": "El uso de recursos no inicializados en Microsoft Office Excel permite que un atacante no autorizado ejecute código localmente."
    }
  ],
  "lastModified": "2026-06-17T09:38:50.413",
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}