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CVE-2025-40540

Estado: AnalizadaAlta (7.2)—

A type confusion vulnerability exists in Serv-U which when exploited, gives a malicious actor the ability to execute arbitrary native code as privileged account.

This issue requires administrative privileges to abuse. On Windows deployments, the risk is scored as a medium because services frequently run under less-privileged service accounts by default.

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 AV:N/AC:L/PR:H/UI:N indica acceso remoto con privilegios altos: explotación de servicio remoto (T1210). La vulnerabilidad permite ejecución de código nativo arbitrario (T1059) como cuenta privilegiada, potencialmente otorgando escalada (T1068).

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

Threat Intelligence ProgramPrivileged Account ManagementExecution PreventionDisable or Remove Feature or ProgramApplication Isolation and SandboxingExploit Protection

Tecnologías afectadas (1)

Solarwinds — Serv-u

CWE

Referencias

JSON original (NVD)

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{
  "id": "CVE-2025-40540",
  "cveTags": [],
  "metrics": {
    "ssvcV203": [
      {
        "source": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
        "ssvcData": {
          "id": "CVE-2025-40540",
          "role": "CISA Coordinator",
          "options": [
            {
              "exploitation": "none"
            },
            {
              "automatable": "no"
            },
            {
              "technicalImpact": "total"
            }
          ],
          "version": "2.0.3",
          "timestamp": "2026-02-25T04:55:27.447736Z"
        }
      }
    ],
    "cvssMetricV31": [
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          "baseSeverity": "CRITICAL",
          "vectorString": "CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:C/C:H/I:H/A:H",
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          "userInteraction": "NONE",
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          "availabilityImpact": "HIGH",
          "privilegesRequired": "HIGH",
          "confidentialityImpact": "HIGH"
        },
        "impactScore": 6,
        "exploitabilityScore": 2.3
      },
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        "type": "Primary",
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          "product": "Serv-U",
          "versions": [
            {
              "status": "affected",
              "version": "SolarWinds Serv-U 15.5.3 and prior versions"
            }
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          "platforms": [
            "Windows",
            "Linux"
          ],
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  "published": "2026-02-24T08:16:28.053",
  "references": [
    {
      "url": "https://documentation.solarwinds.com/en/success_center/servu/content/release_notes/servu_15-5-4_release_notes.htm",
      "tags": [
        "Release Notes",
        "Vendor Advisory"
      ],
      "source": "psirt@solarwinds.com"
    },
    {
      "url": "https://www.solarwinds.com/trust-center/security-advisories/CVE-2025-40540",
      "tags": [
        "Vendor Advisory"
      ],
      "source": "psirt@solarwinds.com"
    }
  ],
  "vulnStatus": "Analyzed",
  "weaknesses": [
    {
      "type": "Secondary",
      "source": "psirt@solarwinds.com",
      "description": [
        {
          "lang": "en",
          "value": "CWE-704"
        }
      ]
    }
  ],
  "descriptions": [
    {
      "lang": "en",
      "value": "A type confusion vulnerability exists in Serv-U which when exploited, gives a malicious actor the ability to execute arbitrary native code as privileged account.\n\nThis issue requires administrative privileges to abuse. On Windows deployments, the risk is scored as a medium because services frequently run under less-privileged service accounts by default."
    },
    {
      "lang": "es",
      "value": "Existe una vulnerabilidad de confusión de tipos en Serv-U que, al ser explotada, otorga a un actor malicioso la capacidad de ejecutar código nativo arbitrario como cuenta privilegiada.\n\nEste problema requiere privilegios de administrador para ser explotado. En implementaciones de Windows, el riesgo se califica como medio porque los servicios con frecuencia se ejecutan bajo cuentas de servicio con menos privilegios por defecto."
    }
  ],
  "lastModified": "2026-06-17T09:21:43.853",
  "configurations": [
    {
      "nodes": [
        {
          "negate": false,
          "cpeMatch": [
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              "matchCriteriaId": "0879DDA2-3F57-41C7-A689-4B904310687E",
              "versionEndExcluding": "15.5.4"
            }
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  "sourceIdentifier": "psirt@solarwinds.com"
}