CVE-2026-55013

Estado: AnalizadaAlta (7.1)—

Uncontrolled search path element in Windows Remote Help Defense allows an authorized attacker to perform spoofing locally.

CVSS

Versión: 3.1
Vector: CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:N
Puntuación base: 7.1

Probabilidad de explotación (EPSS)

Probabilidad de explotación en los próximos 30 días: 0.46%
Percentil entre todas las CVEs puntuadas: 38
Fecha de la puntuación: 3/10/2026

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.

ExplotaciónT1068 Exploitation for Privilege Escalationprivilege escalation85 %
Impacto principalT1574.007 Path Interception by PATH Environment Variablestealth · execution80 %
Impacto secundarioT1556 Modify Authentication Processdefense impairment · persistence · credential access70 %

AV:L sin UI requiere acceso local → T1068. CWE-427 (búsqueda de ruta incontrolada) permite secuestro de DLL/biblioteca (T1574.007). El spoofing local de un servicio de ayuda remota autorizada puede usarse para suplantación de identidad (T1556).

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 File and Directory Permissions Execution Prevention Audit User Account Management Threat Intelligence Program Restrict Registry Permissions

Tecnologías afectadas (1)

Microsoft — Remote Help

CWE

CWE-427

Referencias

https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-55013

JSON original (NVD)

Mostrar

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            },
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            },
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            }
          ],
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          "timestamp": "2026-08-21T00:00:00+00:00"
        }
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          "attackComplexity": "LOW",
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          "privilegesRequired": "LOW",
          "confidentialityImpact": "HIGH"
        },
        "impactScore": 5.2,
        "exploitabilityScore": 1.8
      }
    ]
  },
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      "affectedData": [
        {
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          "product": "Windows Remote Help",
          "versions": [
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              "version": "5.0.0.0",
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            }
          ]
        }
      ]
    }
  ],
  "published": "2026-08-20T22:17:21.933",
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      "tags": [
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      ],
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  ],
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      "value": "Uncontrolled search path element in Windows Remote Help Defense allows an authorized attacker to perform spoofing locally."
    }
  ],
  "lastModified": "2026-08-26T15:00:51.770",
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    {
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        {
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  "sourceIdentifier": "secure@microsoft.com"
}