FKIE_CVE-2025-11500

Vulnerability from fkie_nvd - Published: 2026-03-16 14:17 - Updated: 2026-03-16 14:53
Severity ?
8.7 (High) - CVSS:4.0/AV:A/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N
Summary
Tinycontrol devices such as tcPDU and LAN Controllers LK3.5, LK3.9 and LK4 have two separate authentication mechanisms - one solely for interface management and one for protecting all other server resources. When the latter is turned off (which is a default setting), an unauthenticated attacker on the local network can obtain usernames and encoded passwords for interface management portal by inspecting the HTTP response of the server when visiting the login page, which contains a JSON file with these details. Both normal and admin users credentials are exposed.  This issue has been fixed in firmware versions: 1.36 (for tcPDU), 1.67 (for LK3.5 - hardware versions: 3.5, 3.6, 3.7 and 3.8), 1.75 (for LK3.9 - hardware version 3.9) and 1.38 (for LK4 - hardware version 4.0).
References
cvd@cert.plhttps://cert.pl/en/posts/2026/03/CVE-2025-11500/
cvd@cert.plhttps://securitum.com/CVE-2025-11500
cvd@cert.plhttps://tinycontrol.pl/en/archives/lan-controller-35/downloads/#firmware
cvd@cert.plhttps://tinycontrol.pl/en/lk39/downloads/#firmware
cvd@cert.plhttps://tinycontrol.pl/en/lk4/downloads/#firmware
cvd@cert.plhttps://tinycontrol.pl/en/tcpdu/downloads/#firmware
Impacted products
Vendor Product Version
To clipboard 

{
  "cveTags": [],
  "descriptions": [
    {
      "lang": "en",
      "value": "Tinycontrol devices such as tcPDU and\u00a0LAN Controllers LK3.5, LK3.9 and LK4\u00a0have two separate authentication mechanisms - one solely for interface management and one for protecting all other server resources. When the latter is turned off (which is a default setting), an unauthenticated attacker on the local network can obtain usernames and encoded passwords for interface management portal by inspecting the HTTP response of the server when visiting the login page, which contains a JSON file with these details. Both normal and admin users credentials are exposed.\u00a0\nThis issue has been fixed in firmware versions: 1.36 (for tcPDU), 1.67 (for LK3.5 - hardware versions: 3.5, 3.6, 3.7 and 3.8), 1.75 (for LK3.9 - hardware version 3.9) and\u00a01.38 (for LK4 - hardware version 4.0)."
    },
    {
      "lang": "es",
      "value": "Los dispositivos Tinycontrol como tcPDU y los controladores LAN LK3.5, LK3.9 y LK4 tienen dos mecanismos de autenticaci\u00f3n separados: uno \u00fanicamente para la gesti\u00f3n de la interfaz y otro para proteger todos los dem\u00e1s recursos del servidor. Cuando este \u00faltimo est\u00e1 desactivado (lo cual es una configuraci\u00f3n predeterminada), un atacante no autenticado en la red local puede obtener nombres de usuario y contrase\u00f1as codificadas para el portal de gesti\u00f3n de la interfaz al inspeccionar la respuesta HTTP del servidor cuando se visita la p\u00e1gina de inicio de sesi\u00f3n, la cual contiene un archivo JSON con estos detalles. Las credenciales de usuarios normales y administradores quedan expuestas.\nEste problema ha sido solucionado en las versiones de firmware: 1.36 (para tcPDU), 1.67 (para LK3.5 - versiones de hardware: 3.5, 3.6, 3.7 y 3.8), 1.75 (para LK3.9 - versi\u00f3n de hardware 3.9) y 1.38 (para LK4 - versi\u00f3n de hardware 4.0)."
    }
  ],
  "id": "CVE-2025-11500",
  "lastModified": "2026-03-16T14:53:46.157",
  "metrics": {
    "cvssMetricV40": [
      {
        "cvssData": {
          "Automatable": "NOT_DEFINED",
          "Recovery": "NOT_DEFINED",
          "Safety": "NOT_DEFINED",
          "attackComplexity": "LOW",
          "attackRequirements": "NONE",
          "attackVector": "ADJACENT",
          "availabilityRequirement": "NOT_DEFINED",
          "baseScore": 8.7,
          "baseSeverity": "HIGH",
          "confidentialityRequirement": "NOT_DEFINED",
          "exploitMaturity": "NOT_DEFINED",
          "integrityRequirement": "NOT_DEFINED",
          "modifiedAttackComplexity": "NOT_DEFINED",
          "modifiedAttackRequirements": "NOT_DEFINED",
          "modifiedAttackVector": "NOT_DEFINED",
          "modifiedPrivilegesRequired": "NOT_DEFINED",
          "modifiedSubAvailabilityImpact": "NOT_DEFINED",
          "modifiedSubConfidentialityImpact": "NOT_DEFINED",
          "modifiedSubIntegrityImpact": "NOT_DEFINED",
          "modifiedUserInteraction": "NOT_DEFINED",
          "modifiedVulnAvailabilityImpact": "NOT_DEFINED",
          "modifiedVulnConfidentialityImpact": "NOT_DEFINED",
          "modifiedVulnIntegrityImpact": "NOT_DEFINED",
          "privilegesRequired": "NONE",
          "providerUrgency": "NOT_DEFINED",
          "subAvailabilityImpact": "NONE",
          "subConfidentialityImpact": "NONE",
          "subIntegrityImpact": "NONE",
          "userInteraction": "NONE",
          "valueDensity": "NOT_DEFINED",
          "vectorString": "CVSS:4.0/AV:A/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/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",
          "version": "4.0",
          "vulnAvailabilityImpact": "HIGH",
          "vulnConfidentialityImpact": "HIGH",
          "vulnIntegrityImpact": "HIGH",
          "vulnerabilityResponseEffort": "NOT_DEFINED"
        },
        "source": "cvd@cert.pl",
        "type": "Secondary"
      }
    ]
  },
  "published": "2026-03-16T14:17:54.113",
  "references": [
    {
      "source": "cvd@cert.pl",
      "url": "https://cert.pl/en/posts/2026/03/CVE-2025-11500/"
    },
    {
      "source": "cvd@cert.pl",
      "url": "https://securitum.com/CVE-2025-11500"
    },
    {
      "source": "cvd@cert.pl",
      "url": "https://tinycontrol.pl/en/archives/lan-controller-35/downloads/#firmware"
    },
    {
      "source": "cvd@cert.pl",
      "url": "https://tinycontrol.pl/en/lk39/downloads/#firmware"
    },
    {
      "source": "cvd@cert.pl",
      "url": "https://tinycontrol.pl/en/lk4/downloads/#firmware"
    },
    {
      "source": "cvd@cert.pl",
      "url": "https://tinycontrol.pl/en/tcpdu/downloads/#firmware"
    }
  ],
  "sourceIdentifier": "cvd@cert.pl",
  "vulnStatus": "Awaiting Analysis",
  "weaknesses": [
    {
      "description": [
        {
          "lang": "en",
          "value": "CWE-201"
        },
        {
          "lang": "en",
          "value": "CWE-261"
        }
      ],
      "source": "cvd@cert.pl",
      "type": "Primary"
    }
  ]
}


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