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CVE-2026-23512

Estado: AnalizadaAlta (7.8)—

SumatraPDF is a multi-format reader for Windows. In 3.5.2 and earlier, there is a Untrusted Search Path vulnerability when Advanced Options setting is trigger. The application executes notepad.exe without specifying an absolute path when using the Advanced Options setting. On Windows, this allows execution of a malicious notepad.exe placed in the application's installation directory, leading to arbitrary code execution.

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.

UI:R + interacción local (abrir Advanced Options) → T1203. Ejecución de notepad.exe desde ruta no especificada permite DLL hijacking (T1574.007) e inyección de código arbitrario (T1059).

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 PreventionAuditRestrict Web-Based ContentRestrict File and Directory PermissionsPrivileged Account ManagementLimit Software Installation

Tecnologías afectadas (1)

Sumatrapdfreader — Sumatrapdf

CWE

Referencias

JSON original (NVD)

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{
  "id": "CVE-2026-23512",
  "cveTags": [],
  "metrics": {
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          "id": "CVE-2026-23512",
          "role": "CISA Coordinator",
          "options": [
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              "exploitation": "poc"
            },
            {
              "automatable": "no"
            },
            {
              "technicalImpact": "total"
            }
          ],
          "version": "2.0.3",
          "timestamp": "2026-01-14T21:04:20.774464Z"
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          "userInteraction": "REQUIRED",
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          "privilegesRequired": "NONE",
          "confidentialityImpact": "HIGH"
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      "url": "https://github.com/sumatrapdfreader/sumatrapdf/commit/2762e02a8cd7cb779c934a44257aac56ab7de673",
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  "weaknesses": [
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      "source": "security-advisories@github.com",
      "description": [
        {
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          "value": "CWE-426"
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      "value": "SumatraPDF is a multi-format reader for Windows. In 3.5.2 and earlier, there is a Untrusted Search Path vulnerability when Advanced Options setting is trigger. The application executes notepad.exe without specifying an absolute path when using the Advanced Options setting. On Windows, this allows execution of a malicious notepad.exe placed in the application's installation directory, leading to arbitrary code execution."
    },
    {
      "lang": "es",
      "value": "SumatraPDF es un lector multiformato para Windows. En 3.5.2 y versiones anteriores, existe una vulnerabilidad de ruta de búsqueda no confiable cuando se activa la configuración de Opciones Avanzadas. La aplicación ejecuta notepad.exe sin especificar una ruta absoluta al usar la configuración de Opciones Avanzadas. En Windows, esto permite la ejecución de un notepad.exe malicioso colocado en el directorio de instalación de la aplicación, lo que lleva a la ejecución de código arbitrario."
    }
  ],
  "lastModified": "2026-06-17T10:21:42.290",
  "configurations": [
    {
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        {
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