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CVE-2026-12504

Estado: AplazadaAlta (8.4)—

Improper Authentication (CWE-287) in the PAM configuration in Loytec LIP-ME201C, L-INX, L-GATE, L-ROC, L-IOB, L-DALI, L-VIS and L-PAD through 8.4.16 on LINX-A64 allows a local attacker to authenticate as a uid=0 account without a password and obtain a root shell via an `/etc/passwd` entry with an empty password field.

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.

Acceso local sin interacción (AV:L, UI:N, PR:H) con autenticación impropia permite escalada a uid=0. CWE-287 (autenticación incorrecta) y entrada `/etc/passwd` con contraseña vacía sustentan T1078 (obtención de credenciales/cuenta root) y T1059.004 (shell).

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

Execution PreventionApplication Developer GuidanceActive Directory ConfigurationUser TrainingUser Account ManagementThreat Intelligence Program

Tecnologías afectadas (9)

⚠ Inferidas por IA a partir de la descripción — NVD aún no ha analizado esta CVE; no son CPE verificados.

Loytec — L-daliAILoytec — L-gateAILoytec — L-inxAILoytec — L-iobAILoytec — L-padAILoytec — L-rocAILoytec — L-visAILoytec — Linx-a64AILoytec — Lip-me201cAI

CWE

Referencias

JSON original (NVD)

Mostrar
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  "id": "CVE-2026-12504",
  "cveTags": [],
  "metrics": {
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        "ssvcData": {
          "id": "CVE-2026-12504",
          "role": "CISA Coordinator",
          "options": [
            {
              "exploitation": "none"
            },
            {
              "automatable": "no"
            },
            {
              "technicalImpact": "total"
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          "version": "2.0.3",
          "timestamp": "2026-07-24T14:57:10.832151Z"
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    "cvssMetricV40": [
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          "valueDensity": "NOT_DEFINED",
          "vectorString": "CVSS:4.0/AV:L/AC:L/AT:N/PR:H/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",
          "exploitMaturity": "NOT_DEFINED",
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          "modifiedAttackRequirements": "NOT_DEFINED",
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          "modifiedSubIntegrityImpact": "NOT_DEFINED",
          "modifiedVulnIntegrityImpact": "NOT_DEFINED",
          "vulnerabilityResponseEffort": "NOT_DEFINED",
          "modifiedSubAvailabilityImpact": "NOT_DEFINED",
          "modifiedVulnAvailabilityImpact": "NOT_DEFINED",
          "modifiedSubConfidentialityImpact": "NOT_DEFINED",
          "modifiedVulnConfidentialityImpact": "NOT_DEFINED"
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      "affectedData": [
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          "product": "LIP-ME20xC",
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              "version": "0",
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        {
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          "product": "L-DALI",
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          "product": "L-PAD",
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              "lessThanOrEqual": "8.4.16"
            }
          ],
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  ],
  "published": "2026-07-24T15:17:11.157",
  "references": [
    {
      "url": "https://www.loytec.com/support/product-security/advisories/8521-dibt-cve-20260526-0003-pam-passwordless-uid-0-authentication-high",
      "source": "vulnerability@ncsc.ch"
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  ],
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      "description": [
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          "value": "CWE-287"
        },
        {
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          "value": "CWE-521"
        }
      ]
    }
  ],
  "descriptions": [
    {
      "lang": "en",
      "value": "Improper Authentication (CWE-287) in the PAM configuration in Loytec LIP-ME201C, L-INX, L-GATE, L-ROC, L-IOB, L-DALI, L-VIS and L-PAD through 8.4.16 on LINX-A64 allows a local attacker to authenticate as a uid=0 account without a password and obtain a root shell via an `/etc/passwd` entry with an empty password field."
    }
  ],
  "lastModified": "2026-07-27T20:32:11.620",
  "sourceIdentifier": "vulnerability@ncsc.ch"
}