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CVE-2026-69414

Estado: ModificadaAlta (7.8)—

Microsoft is aware of an elevation of privilege in the Microsoft Malware Protection Engine in Microsoft Defender publicly referred to as "ShieldBreak ".

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 + PR:L + UI:N indica escalada local sin interacción. Elevation of privilege en Malware Protection Engine permite pasar de usuario limitado a SYSTEM/admin, logrando ejecución de comandos con máximos privilegios.

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

Execution PreventionThreat Intelligence ProgramRestrict Web-Based ContentPrivileged Account ManagementLimit Software InstallationBehavior Prevention on Endpoint

Tecnologías afectadas (1)

Microsoft — Malware Protection Engine

CWE

Referencias

JSON original (NVD)

Mostrar
{
  "id": "CVE-2026-69414",
  "cveTags": [],
  "metrics": {
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      {
        "source": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
        "ssvcData": {
          "id": "CVE-2026-69414",
          "role": "CISA Coordinator",
          "options": [
            {
              "exploitation": "poc"
            },
            {
              "automatable": "no"
            },
            {
              "technicalImpact": "total"
            }
          ],
          "version": "2.0.3",
          "timestamp": "2026-08-17T00:00:00+00:00"
        }
      }
    ],
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          "attackVector": "LOCAL",
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          "vectorString": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H",
          "integrityImpact": "HIGH",
          "userInteraction": "NONE",
          "attackComplexity": "LOW",
          "availabilityImpact": "HIGH",
          "privilegesRequired": "LOW",
          "confidentialityImpact": "HIGH"
        },
        "impactScore": 5.9,
        "exploitabilityScore": 1.8
      }
    ]
  },
  "affected": [
    {
      "source": "secure@microsoft.com",
      "affectedData": [
        {
          "vendor": "Microsoft",
          "product": "Microsoft Malware Protection Engine",
          "versions": [
            {
              "status": "affected",
              "version": "1.1.0.0",
              "lessThan": "1.1.26080.3",
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          ]
        }
      ]
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  ],
  "published": "2026-08-14T22:17:06.810",
  "references": [
    {
      "url": "https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-69414",
      "tags": [
        "Vendor Advisory"
      ],
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    },
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      "url": "https://github.com/MSNightmare/ShieldBreak",
      "source": "134c704f-9b21-4f2e-91b3-4a467353bcc0"
    }
  ],
  "vulnStatus": "Modified",
  "weaknesses": [
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    },
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      "source": "nvd@nist.gov",
      "description": [
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          "value": "CWE-269"
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  ],
  "descriptions": [
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      "value": "Microsoft is aware of an elevation of privilege in the Microsoft Malware Protection Engine in Microsoft Defender publicly referred to as "ShieldBreak "."
    }
  ],
  "lastModified": "2026-09-03T22:18:19.793",
  "configurations": [
    {
      "nodes": [
        {
          "negate": false,
          "cpeMatch": [
            {
              "criteria": "cpe:2.3:a:microsoft:malware_protection_engine:-:*:*:*:*:*:*:*",
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            }
          ],
          "operator": "OR"
        }
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  "sourceIdentifier": "secure@microsoft.com"
}