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CVE-2026-40852

Estado: AplazadaAlta (7.2)—

A highly authenticated attacker can alter the config generator injecting a payload into future created configurations. The device is not correctly checking this configuration value before passing it to an system execute leading to code execution. This can result in a total loss of confidentiality, integrity and availability.

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.

AV:N y PR:H sugieren T1210 (servicios remotos con privilegios). CWE-78 y 'system execute' confirman T1059. La inyección en configuración por atacante autenticado puede escalar privilegios (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

CWE

Referencias

JSON original (NVD)

Mostrar
{
  "id": "CVE-2026-40852",
  "cveTags": [],
  "metrics": {
    "ssvcV203": [
      {
        "source": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
        "ssvcData": {
          "id": "CVE-2026-40852",
          "role": "CISA Coordinator",
          "options": [
            {
              "exploitation": "none"
            },
            {
              "automatable": "no"
            },
            {
              "technicalImpact": "total"
            }
          ],
          "version": "2.0.3",
          "timestamp": "2026-05-27T11:44:33.329985Z"
        }
      }
    ],
    "cvssMetricV31": [
      {
        "type": "Secondary",
        "source": "info@cert.vde.com",
        "cvssData": {
          "scope": "UNCHANGED",
          "version": "3.1",
          "baseScore": 7.2,
          "attackVector": "NETWORK",
          "baseSeverity": "HIGH",
          "vectorString": "CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H",
          "integrityImpact": "HIGH",
          "userInteraction": "NONE",
          "attackComplexity": "LOW",
          "availabilityImpact": "HIGH",
          "privilegesRequired": "HIGH",
          "confidentialityImpact": "HIGH"
        },
        "impactScore": 5.9,
        "exploitabilityScore": 1.2
      }
    ]
  },
  "affected": [
    {
      "source": "info@cert.vde.com",
      "affectedData": [
        {
          "vendor": "MB connect line",
          "product": "mbNET/mbNET.rokey",
          "versions": [
            {
              "status": "affected",
              "version": "0.0.0",
              "versionType": "semver",
              "lessThanOrEqual": "8.4.4"
            }
          ],
          "defaultStatus": "unaffected"
        },
        {
          "vendor": "MB connect line",
          "product": "mbNET.mini",
          "versions": [
            {
              "status": "affected",
              "version": "0.0.0",
              "versionType": "semver",
              "lessThanOrEqual": "3.0.2"
            }
          ],
          "defaultStatus": "unaffected"
        },
        {
          "vendor": "MB connect line",
          "product": "mbNET/mbNET.rokey",
          "versions": [
            {
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              "version": "8.4.4"
            }
          ],
          "defaultStatus": "unaffected"
        },
        {
          "vendor": "MB connect line",
          "product": "mbNET.mini",
          "versions": [
            {
              "status": "affected",
              "version": "3.0.2"
            }
          ],
          "defaultStatus": "unaffected"
        },
        {
          "vendor": "Helmholz",
          "product": "REX200/250",
          "versions": [
            {
              "status": "affected",
              "version": "0.0.0",
              "versionType": "semver",
              "lessThanOrEqual": "8.4.4"
            }
          ],
          "defaultStatus": "unaffected"
        },
        {
          "vendor": "Helmholz",
          "product": "REX100",
          "versions": [
            {
              "status": "affected",
              "version": "0.0.0",
              "versionType": "semver",
              "lessThanOrEqual": "3.0.2"
            }
          ],
          "defaultStatus": "unaffected"
        },
        {
          "vendor": "Helmholz",
          "product": "REX200/250",
          "versions": [
            {
              "status": "affected",
              "version": "8.4.4"
            }
          ],
          "defaultStatus": "unaffected"
        },
        {
          "vendor": "Helmholz",
          "product": "REX100",
          "versions": [
            {
              "status": "affected",
              "version": "3.0.2"
            }
          ],
          "defaultStatus": "unaffected"
        }
      ]
    }
  ],
  "published": "2026-05-27T09:16:31.817",
  "references": [
    {
      "url": "https://www.certvde.com/en/advisories/VDE-2026-054/",
      "source": "info@cert.vde.com"
    }
  ],
  "vulnStatus": "Deferred",
  "weaknesses": [
    {
      "type": "Secondary",
      "source": "info@cert.vde.com",
      "description": [
        {
          "lang": "en",
          "value": "CWE-78"
        }
      ]
    }
  ],
  "descriptions": [
    {
      "lang": "en",
      "value": "A highly authenticated attacker can alter the config generator injecting a payload into future created configurations. The device is not correctly checking this configuration value before passing it to an system execute leading to code execution. This can result in a total loss of confidentiality, integrity and availability."
    }
  ],
  "lastModified": "2026-06-17T10:45:46.580",
  "sourceIdentifier": "info@cert.vde.com"
}