CVE-2026-6644

{
  "id": "CVE-2026-6644",
  "sourceIdentifier": "[email protected]",
  "published": "2026-04-20T07:16:16.693",
  "lastModified": "2026-10-26T21:10:00.170",
  "vulnStatus": "Modified",
  "cveTags": [],
  "descriptions": [
    {
      "lang": "en",
      "value": "A command injection vulnerability was found in the PPTP VPN Clients on the ADM. The vulnerability allows an administrative user to break out of the restricted web environment and execute arbitrary code on the underlying operating system. This occurs due to insufficient validation of user-supplied input before it is passed to a system shell. Successful exploitation allows an attacker to achieve Remote Code Execution (RCE) and fully compromise the system.\nAffected products and versions include: from ADM 4.1.0 through ADM 4.3.3.RR42 as well as from ADM 5.0.0 through ADM 5.1.2.REO1."
    },
    {
      "lang": "es",
      "value": "Una vulnerabilidad de inyección de comandos fue encontrada en los Clientes VPN PPTP en el ADM. La vulnerabilidad permite a un usuario administrativo salir del entorno web restringido y ejecutar código arbitrario en el sistema operativo subyacente. Esto ocurre debido a una validación insuficiente de la entrada proporcionada por el usuario antes de que sea pasada a un shell del sistema. La explotación exitosa permite a un atacante lograr Ejecución Remota de Código (RCE) y comprometer completamente el sistema.\nLos productos y versiones afectados incluyen: desde ADM 4.1.0 hasta ADM 4.3.3.RR42, así como desde ADM 5.0.0 hasta ADM 5.1.2.REO1."
    }
  ],
  "affected": [
    {
      "source": "[email protected]",
      "affectedData": [
        {
          "vendor": "ASUSTOR Inc.",
          "product": "ADM",
          "defaultStatus": "unaffected",
          "packageName": "PPTP VPN Clients",
          "versions": [
            {
              "version": "4.1.0",
              "lessThanOrEqual": "4.3.3.RR42",
              "versionType": "custom",
              "status": "affected"
            },
            {
              "version": "5.0.0",
              "lessThanOrEqual": "5.1.2.REO1",
              "versionType": "custom",
              "status": "affected"
            }
          ]
        }
      ]
    }
  ],
  "metrics": {
    "cvssMetricV40": [
      {
        "source": "[email protected]",
        "type": "Secondary",
        "cvssData": {
          "version": "4.0",
          "vectorString": "CVSS:4.0/AV:N/AC:L/AT:N/PR:H/UI:N/VC:H/VI:H/VA:H/SC:H/SI:H/SA:H/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X",
          "baseScore": 9.4,
          "baseSeverity": "CRITICAL",
          "attackVector": "NETWORK",
          "attackComplexity": "LOW",
          "attackRequirements": "NONE",
          "privilegesRequired": "HIGH",
          "userInteraction": "NONE",
          "vulnConfidentialityImpact": "HIGH",
          "vulnIntegrityImpact": "HIGH",
          "vulnAvailabilityImpact": "HIGH",
          "subConfidentialityImpact": "HIGH",
          "subIntegrityImpact": "HIGH",
          "subAvailabilityImpact": "HIGH",
          "exploitMaturity": "NOT_DEFINED",
          "confidentialityRequirement": "NOT_DEFINED",
          "integrityRequirement": "NOT_DEFINED",
          "availabilityRequirement": "NOT_DEFINED",
          "modifiedAttackVector": "NOT_DEFINED",
          "modifiedAttackComplexity": "NOT_DEFINED",
          "modifiedAttackRequirements": "NOT_DEFINED",
          "modifiedPrivilegesRequired": "NOT_DEFINED",
          "modifiedUserInteraction": "NOT_DEFINED",
          "modifiedVulnConfidentialityImpact": "NOT_DEFINED",
          "modifiedVulnIntegrityImpact": "NOT_DEFINED",
          "modifiedVulnAvailabilityImpact": "NOT_DEFINED",
          "modifiedSubConfidentialityImpact": "NOT_DEFINED",
          "modifiedSubIntegrityImpact": "NOT_DEFINED",
          "modifiedSubAvailabilityImpact": "NOT_DEFINED",
          "Safety": "NOT_DEFINED",
          "Automatable": "NOT_DEFINED",
          "Recovery": "NOT_DEFINED",
          "valueDensity": "NOT_DEFINED",
          "vulnerabilityResponseEffort": "NOT_DEFINED",
          "providerUrgency": "NOT_DEFINED"
        }
      }
    ],
    "cvssMetricV31": [
      {
        "source": "[email protected]",
        "type": "Primary",
        "cvssData": {
          "version": "3.1",
          "vectorString": "CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:C/C:H/I:H/A:H",
          "baseScore": 9.1,
          "baseSeverity": "CRITICAL",
          "attackVector": "NETWORK",
          "attackComplexity": "LOW",
          "privilegesRequired": "HIGH",
          "userInteraction": "NONE",
          "scope": "CHANGED",
          "confidentialityImpact": "HIGH",
          "integrityImpact": "HIGH",
          "availabilityImpact": "HIGH"
        },
        "exploitabilityScore": 2.3,
        "impactScore": 6.0
      }
    ],
    "ssvcV203": [
      {
        "source": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
        "ssvcData": {
          "timestamp": "2026-04-30T12:47:20.401023Z",
          "id": "CVE-2026-6644",
          "options": [
            {
              "exploitation": "poc"
            },
            {
              "automatable": "no"
            },
            {
              "technicalImpact": "total"
            }
          ],
          "role": "CISA Coordinator",
          "version": "2.0.3"
        }
      }
    ]
  },
  "weaknesses": [
    {
      "source": "[email protected]",
      "type": "Secondary",
      "description": [
        {
          "lang": "en",
          "value": "CWE-78"
        }
      ]
    }
  ],
  "configurations": [
    {
      "nodes": [
        {
          "operator": "OR",
          "negate": false,
          "cpeMatch": [
            {
              "vulnerable": true,
              "criteria": "cpe:2.3:o:asustor:data_master:*:*:*:*:*:*:*:*",
              "versionStartIncluding": "4.1.0.rhu2",
              "versionEndExcluding": "4.3.3.RR42",
              "matchCriteriaId": "20307258-479E-4ECD-AF5E-B31019D22525"
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              "criteria": "cpe:2.3:o:asustor:data_master:*:*:*:*:*:*:*:*",
              "versionStartIncluding": "5.0.0.ra82",
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  "references": [
    {
      "url": "https://https://www.asustor.com/security/security_advisory_detail?id=55",
      "source": "[email protected]",
      "tags": [
        "Broken Link",
        "Vendor Advisory"
      ]
    },
    {
      "url": "https://uky007.github.io/CVE-2026-6644/",
      "source": "134c704f-9b21-4f2e-91b3-4a467353bcc0"
    }
  ]
}