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CVE-2026-50523

Estado: AnalizadaAlta (7.8)—

Improper neutralization of special elements used in a command ('command injection') in Microsoft PowerShell allows an authorized 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.

Acceso local con privilegios (PR:L, AV:L) sin interacción del usuario. CWE-77 indica inyección de comandos. El atacante autorizado ejecuta código en PowerShell, escalando privilegios locales.

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 — Powershell

CWE

Referencias

JSON original (NVD)

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{
  "id": "CVE-2026-50523",
  "cveTags": [],
  "metrics": {
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      {
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        "ssvcData": {
          "id": "CVE-2026-50523",
          "role": "CISA Coordinator",
          "options": [
            {
              "exploitation": "none"
            },
            {
              "automatable": "no"
            },
            {
              "technicalImpact": "total"
            }
          ],
          "version": "2.0.3",
          "timestamp": "2026-07-13T00:00:00+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": [
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      "source": "secure@microsoft.com",
      "affectedData": [
        {
          "vendor": "Microsoft",
          "product": "PowerShell 7.4",
          "versions": [
            {
              "status": "affected",
              "version": "7.4.0",
              "lessThan": "7.4.19.0",
              "versionType": "custom"
            }
          ]
        },
        {
          "vendor": "Microsoft",
          "product": "PowerShell 7.5",
          "versions": [
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              "status": "affected",
              "version": "7.5.0",
              "lessThan": "7.5.10.0",
              "versionType": "custom"
            }
          ]
        },
        {
          "vendor": "Microsoft",
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          "versions": [
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              "status": "affected",
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              "lessThan": "7.6.5",
              "versionType": "custom"
            }
          ]
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      ]
    }
  ],
  "published": "2026-08-14T21:17:18.920",
  "references": [
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      "url": "https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-50523",
      "tags": [
        "Vendor Advisory"
      ],
      "source": "secure@microsoft.com"
    }
  ],
  "vulnStatus": "Analyzed",
  "weaknesses": [
    {
      "type": "Secondary",
      "source": "secure@microsoft.com",
      "description": [
        {
          "lang": "en",
          "value": "CWE-77"
        }
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    }
  ],
  "descriptions": [
    {
      "lang": "en",
      "value": "Improper neutralization of special elements used in a command ('command injection') in Microsoft PowerShell allows an authorized attacker to execute code locally."
    }
  ],
  "lastModified": "2026-08-18T13:16:20.670",
  "configurations": [
    {
      "nodes": [
        {
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          "operator": "OR"
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  ],
  "sourceIdentifier": "secure@microsoft.com"
}