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CVE-2026-45461

Estado: ModificadaAlta (8.4)—

Use after free in Microsoft Office 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 sin UI:R ni PR requeridos → T1068 (escalada local). Use-after-free (CWE-416) permite ejecución de código arbitrario → T1059.

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

Tecnologías afectadas (7)

CWE

Referencias

JSON original (NVD)

Mostrar
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          "role": "CISA Coordinator",
          "options": [
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              "exploitation": "none"
            },
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              "automatable": "no"
            },
            {
              "technicalImpact": "total"
            }
          ],
          "version": "2.0.3",
          "timestamp": "2026-06-10T03:56:25.365596Z"
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          "userInteraction": "NONE",
          "attackComplexity": "LOW",
          "availabilityImpact": "HIGH",
          "privilegesRequired": "NONE",
          "confidentialityImpact": "HIGH"
        },
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        "exploitabilityScore": 2.5
      }
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  ],
  "published": "2026-06-09T17:17:20.450",
  "references": [
    {
      "url": "https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-45461",
      "tags": [
        "Vendor Advisory"
      ],
      "source": "secure@microsoft.com"
    }
  ],
  "vulnStatus": "Modified",
  "weaknesses": [
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      "type": "Secondary",
      "source": "secure@microsoft.com",
      "description": [
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          "value": "CWE-416"
        }
      ]
    },
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      "type": "Primary",
      "source": "nvd@nist.gov",
      "description": [
        {
          "lang": "en",
          "value": "CWE-787"
        }
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  ],
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    {
      "lang": "en",
      "value": "Use after free in Microsoft Office allows an unauthorized attacker to execute code locally."
    },
    {
      "lang": "es",
      "value": "Desbordamiento de búfer basado en montículo en Microsoft Office permite a un atacante no autorizado ejecutar código localmente."
    }
  ],
  "lastModified": "2026-07-23T08:10:00.137",
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}