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CVE-2026-4064

Estado: AnalizadaAlta (8.3)—

Missing authorization checks on multiple gRPC service endpoints in PowerShell Universal before 2026.1.4 allows an authenticated user with any valid token to bypass role-based access controls and perform privileged operations — including reading sensitive data, creating or deleting resources, and disrupting service operations — via crafted gRPC requests.

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 remoto autenticado a servicios gRPC con ausencia de autorización (CWE-862) permite escalada de privilegios y manipulación de recursos; CVSS 3.1 AV:N/PR:L confirma vector red con 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

Privileged Account ManagementNetwork SegmentationApplication Developer GuidanceActive Directory ConfigurationVulnerability ScanningUser Training

Tecnologías afectadas (1)

Ironmansoftware — Powershell Universal

CWE

Referencias

JSON original (NVD)

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{
  "id": "CVE-2026-4064",
  "cveTags": [],
  "metrics": {
    "ssvcV203": [
      {
        "source": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
        "ssvcData": {
          "id": "CVE-2026-4064",
          "role": "CISA Coordinator",
          "options": [
            {
              "exploitation": "none"
            },
            {
              "automatable": "no"
            },
            {
              "technicalImpact": "total"
            }
          ],
          "version": "2.0.3",
          "timestamp": "2026-03-17T20:03:16.122611Z"
        }
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          "vectorString": "CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:L",
          "integrityImpact": "HIGH",
          "userInteraction": "NONE",
          "attackComplexity": "LOW",
          "availabilityImpact": "LOW",
          "privilegesRequired": "LOW",
          "confidentialityImpact": "HIGH"
        },
        "impactScore": 5.5,
        "exploitabilityScore": 2.8
      }
    ]
  },
  "affected": [
    {
      "source": "security@devolutions.net",
      "affectedData": [
        {
          "vendor": "Devolutions",
          "product": "PowerShell Universal",
          "versions": [
            {
              "status": "affected",
              "version": "2026.1.0",
              "lessThan": "2026.1.4",
              "versionType": "custom"
            }
          ],
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        }
      ]
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  ],
  "published": "2026-03-17T20:16:14.717",
  "references": [
    {
      "url": "https://devolutions.net/security/advisories/DEVO-2026-0008",
      "tags": [
        "Vendor Advisory"
      ],
      "source": "security@devolutions.net"
    }
  ],
  "vulnStatus": "Analyzed",
  "weaknesses": [
    {
      "type": "Secondary",
      "source": "security@devolutions.net",
      "description": [
        {
          "lang": "en",
          "value": "CWE-862"
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      "lang": "en",
      "value": "Missing authorization checks on multiple gRPC service endpoints in PowerShell Universal before 2026.1.4 allows an authenticated user with any valid token to bypass role-based access controls and perform privileged operations — including reading sensitive data, creating or deleting resources, and disrupting service operations — via crafted gRPC requests."
    },
    {
      "lang": "es",
      "value": "Faltan comprobaciones de autorización en múltiples puntos finales de servicio gRPC en PowerShell Universal antes de la versión 2026.1.4, lo que permite a un usuario autenticado con cualquier token válido eludir los controles de acceso basados en roles y realizar operaciones privilegiadas — incluyendo la lectura de datos sensibles, la creación o eliminación de recursos, y la interrupción de las operaciones del servicio — mediante solicitudes gRPC manipuladas."
    }
  ],
  "lastModified": "2026-06-17T10:55:55.760",
  "configurations": [
    {
      "nodes": [
        {
          "negate": false,
          "cpeMatch": [
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              "criteria": "cpe:2.3:a:ironmansoftware:powershell_universal:*:*:*:*:*:*:*:*",
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              "versionEndExcluding": "2026.1.4"
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          "operator": "OR"
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      ]
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  "sourceIdentifier": "security@devolutions.net"
}