FKIE_CVE-2025-13953

Vulnerability from fkie_nvd - Published: 2025-12-10 12:16 - Updated: 2026-10-14 21:10
Severity
9.3 (Critical) - CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N
Summary
Bypass vulnerability in the authentication method in the GTT Tax Information System application, related to the Active Directory (LDAP) login method. Authentication is performed through a local WebSocket, but the web application does not properly validate the authenticity or origin of the data received, allowing an attacker with access to the local machine or internal network to impersonate the legitimate WebSocket and inject manipulated information. Exploiting this vulnerability could allow an attacker to authenticate as any user in the domain, without the need for valid credentials, compromising the confidentiality, integrity, and availability of the application and its data.
References
cve-coordination@incibe.eshttps://www.incibe.es/en/incibe-cert/notices/aviso/bypass-authentication-method-gtt-sistema-de-informacion-tributario
Impacted products
Vendor Product Version
To clipboard 

{
  "affected": [
    {
      "affectedData": [
        {
          "defaultStatus": "unaffected",
          "product": "Sistema de Informaci\u00f3n Tributario",
          "vendor": "GTT",
          "versions": [
            {
              "status": "affected",
              "version": "All versions"
            }
          ]
        }
      ],
      "source": "cve-coordination@incibe.es"
    }
  ],
  "cveTags": [],
  "descriptions": [
    {
      "lang": "en",
      "value": "Bypass vulnerability in the authentication method in the GTT Tax Information System application, related to the Active Directory (LDAP) login method.\n\nAuthentication is performed through a local WebSocket, but the web application does not properly validate the authenticity or origin of the data received, allowing an attacker with access to the local machine or internal network to impersonate the legitimate WebSocket and inject manipulated information.\n\nExploiting this vulnerability could allow an attacker to authenticate as any user in the domain, without the need for valid credentials, compromising the confidentiality, integrity, and availability of the application and its data."
    },
    {
      "lang": "es",
      "value": "Vulnerabilidad de omisi\u00f3n en el m\u00e9todo de autenticaci\u00f3n en la aplicaci\u00f3n del Sistema de Informaci\u00f3n Tributaria GTT, relacionada con el m\u00e9todo de inicio de sesi\u00f3n de Active Directory (LDAP).\n\nLa autenticaci\u00f3n se realiza a trav\u00e9s de un WebSocket local, pero la aplicaci\u00f3n web no valida correctamente la autenticidad o el origen de los datos recibidos, permitiendo a un atacante con acceso a la m\u00e1quina local o a la red interna suplantar el WebSocket leg\u00edtimo e inyectar informaci\u00f3n manipulada.\n\nExplotar esta vulnerabilidad podr\u00eda permitir a un atacante autenticarse como cualquier usuario en el dominio, sin necesidad de credenciales v\u00e1lidas, comprometiendo la confidencialidad, integridad y disponibilidad de la aplicaci\u00f3n y sus datos."
    }
  ],
  "id": "CVE-2025-13953",
  "lastModified": "2026-10-14T21:10:00.183",
  "metrics": {
    "cvssMetricV40": [
      {
        "cvssData": {
          "Automatable": "NOT_DEFINED",
          "Recovery": "NOT_DEFINED",
          "Safety": "NOT_DEFINED",
          "attackComplexity": "LOW",
          "attackRequirements": "NONE",
          "attackVector": "NETWORK",
          "availabilityRequirement": "NOT_DEFINED",
          "baseScore": 9.3,
          "baseSeverity": "CRITICAL",
          "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:N/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": "cve-coordination@incibe.es",
        "type": "Secondary"
      }
    ],
    "ssvcV203": [
      {
        "source": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
        "ssvcData": {
          "id": "CVE-2025-13953",
          "options": [
            {
              "exploitation": "none"
            },
            {
              "automatable": "yes"
            },
            {
              "technicalImpact": "total"
            }
          ],
          "role": "CISA Coordinator",
          "timestamp": "2025-12-10T16:39:08.377316Z",
          "version": "2.0.3"
        }
      }
    ]
  },
  "published": "2025-12-10T12:16:20.510",
  "references": [
    {
      "source": "cve-coordination@incibe.es",
      "url": "https://www.incibe.es/en/incibe-cert/notices/aviso/bypass-authentication-method-gtt-sistema-de-informacion-tributario"
    }
  ],
  "sourceIdentifier": "cve-coordination@incibe.es",
  "vulnStatus": "Deferred",
  "weaknesses": [
    {
      "description": [
        {
          "lang": "en",
          "value": "CWE-290"
        }
      ],
      "source": "cve-coordination@incibe.es",
      "type": "Secondary"
    }
  ]
}



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