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CVE-2026-3564

Estado: Pendiente de análisisCrítica (9)—

A condition in the ScreenConnect server component may allow an actor with access to server-level cryptographic material used for authentication to obtain unauthorized access, including elevated privileges, in certain scenarios. ScreenConnect host and guest client agents are not independently affected by this CVE.

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.

Vector CVSS AV:N (red sin privilegios) sugiere T1190. Acceso a material criptográfico para autenticación permite obtener acceso no autorizado con privilegios elevados (T1078 para acceso de cuenta, T1068 para escalada).

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 ManagementApplication Isolation and SandboxingExploit ProtectionUpdate SoftwareApplication Developer GuidanceActive Directory Configuration

Tecnologías afectadas (1)

⚠ Inferidas por IA a partir de la descripción — NVD aún no ha analizado esta CVE; no son CPE verificados.

Connectwise — ScreenconnectAI

CWE

Referencias

JSON original (NVD)

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{
  "id": "CVE-2026-3564",
  "cveTags": [],
  "metrics": {
    "ssvcV203": [
      {
        "source": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
        "ssvcData": {
          "id": "CVE-2026-3564",
          "role": "CISA Coordinator",
          "options": [
            {
              "exploitation": "none"
            },
            {
              "automatable": "no"
            },
            {
              "technicalImpact": "total"
            }
          ],
          "version": "2.0.3",
          "timestamp": "2026-03-17T00:00:00+00:00"
        }
      }
    ],
    "cvssMetricV31": [
      {
        "type": "Secondary",
        "source": "7d616e1a-3288-43b1-a0dd-0a65d3e70a49",
        "cvssData": {
          "scope": "CHANGED",
          "version": "3.1",
          "baseScore": 9,
          "attackVector": "NETWORK",
          "baseSeverity": "CRITICAL",
          "vectorString": "CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:C/C:H/I:H/A:H",
          "integrityImpact": "HIGH",
          "userInteraction": "NONE",
          "attackComplexity": "HIGH",
          "availabilityImpact": "HIGH",
          "privilegesRequired": "NONE",
          "confidentialityImpact": "HIGH"
        },
        "impactScore": 6,
        "exploitabilityScore": 2.2
      }
    ]
  },
  "affected": [
    {
      "source": "7d616e1a-3288-43b1-a0dd-0a65d3e70a49",
      "affectedData": [
        {
          "vendor": "ConnectWise",
          "modules": [
            "Server component",
            "Server authentication cryptographic material handling"
          ],
          "product": "ScreenConnect",
          "versions": [
            {
              "status": "affected",
              "version": "All server versions prior to 26.1"
            }
          ],
          "defaultStatus": "unaffected"
        }
      ]
    }
  ],
  "published": "2026-03-17T15:16:19.253",
  "references": [
    {
      "url": "https://www.connectwise.com/company/trust/security-bulletins/2026-03-17-screenconnect-bulletin",
      "source": "7d616e1a-3288-43b1-a0dd-0a65d3e70a49"
    }
  ],
  "vulnStatus": "Awaiting Analysis",
  "weaknesses": [
    {
      "type": "Secondary",
      "source": "7d616e1a-3288-43b1-a0dd-0a65d3e70a49",
      "description": [
        {
          "lang": "en",
          "value": "CWE-347"
        }
      ]
    }
  ],
  "descriptions": [
    {
      "lang": "en",
      "value": "A condition in the ScreenConnect server component may allow an actor with access to server-level cryptographic material used for authentication to obtain unauthorized access, including elevated privileges, in certain scenarios. ScreenConnect host and guest client agents are not independently affected by this CVE."
    },
    {
      "lang": "es",
      "value": "Una condición en ScreenConnect podría permitir a un actor con acceso a material criptográfico a nivel de servidor utilizado para la autenticación obtener acceso no autorizado, incluyendo privilegios elevados, en ciertos escenarios."
    }
  ],
  "lastModified": "2026-07-09T18:16:51.930",
  "sourceIdentifier": "7d616e1a-3288-43b1-a0dd-0a65d3e70a49"
}