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CVE-2025-34396

Estado: AnalizadaAlta (8.5)—

MailEnable versions prior to 10.54 contain an unsafe DLL loading vulnerability that can lead to local arbitrary code execution. The MailEnable administrative executable attempts to load MEAINFY.DLL from its application directo without sufficient integrity validation or secure search order. If the DLL is missing or attacker-writable locations in the search path are used, a local attacker with write permissions to the directory can plant a malicious MEAINFY.DLL. When the executable is launched, it loads the attacker-controlled library and executes code with the privileges of the process, enabling local privilege escalation when run with elevated rights.

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 con PR:L sin interacción del usuario (AV:L, UI:N, PR:L). Carga insegura de DLL (CWE-427) permite escalada de privilegios cuando se ejecuta con derechos elevados. Impacto: inyección de DLL y ejecución de código arbitrary.

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 PreventionAuditThreat Intelligence ProgramRestrict Web-Based ContentRestrict File and Directory PermissionsPrivileged Account Management

Tecnologías afectadas (1)

Mailenable — Mailenable

CWE

Referencias

JSON original (NVD)

Mostrar
{
  "id": "CVE-2025-34396",
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          "id": "CVE-2025-34396",
          "role": "CISA Coordinator",
          "options": [
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              "exploitation": "none"
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              "automatable": "no"
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              "technicalImpact": "total"
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          "version": "2.0.3",
          "timestamp": "2025-12-09T19:24:17.027401Z"
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          "userInteraction": "REQUIRED",
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    ],
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        "type": "Secondary",
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          "modifiedAttackRequirements": "NOT_DEFINED",
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          "modifiedVulnIntegrityImpact": "NOT_DEFINED",
          "vulnerabilityResponseEffort": "NOT_DEFINED",
          "modifiedSubAvailabilityImpact": "NOT_DEFINED",
          "modifiedVulnAvailabilityImpact": "NOT_DEFINED",
          "modifiedSubConfidentialityImpact": "NOT_DEFINED",
          "modifiedVulnConfidentialityImpact": "NOT_DEFINED"
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  "affected": [
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      "affectedData": [
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          "product": "MailEnable",
          "versions": [
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              "versionType": "custom"
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  "published": "2025-12-09T18:15:49.770",
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      "url": "https://mailenable.com/Standard-ReleaseNotes.txt",
      "tags": [
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      "source": "disclosure@vulncheck.com"
    },
    {
      "url": "https://www.mailenable.com/",
      "tags": [
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    },
    {
      "url": "https://www.vulncheck.com/advisories/mailenable-dll-hijacking-via-unsafe-loading-of-meainfy-dll",
      "tags": [
        "Third Party Advisory"
      ],
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  "vulnStatus": "Analyzed",
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      "description": [
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          "value": "CWE-427"
        }
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    {
      "lang": "en",
      "value": "MailEnable versions prior to 10.54 contain an unsafe DLL loading vulnerability that can lead to local arbitrary code execution. The MailEnable administrative executable attempts to load MEAINFY.DLL from its application directo without sufficient integrity validation or secure search order. If the DLL is missing or attacker-writable locations in the search path are used, a local attacker with write permissions to the directory can plant a malicious MEAINFY.DLL. When the executable is launched, it loads the attacker-controlled library and executes code with the privileges of the process, enabling local privilege escalation when run with elevated rights."
    }
  ],
  "lastModified": "2026-06-17T09:13:55.020",
  "configurations": [
    {
      "nodes": [
        {
          "negate": false,
          "cpeMatch": [
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  "sourceIdentifier": "disclosure@vulncheck.com"
}