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CVE-2026-40032

Estado: Pendiente de análisisAlta (8.5)—

UAC (Unix-like Artifacts Collector) before 3.3.0-rc1 contains a command injection vulnerability in the placeholder substitution and command execution pipeline where the _run_command() function passes constructed command strings directly to eval without proper sanitization. Attackers can inject shell metacharacters or command substitutions through attacker-controlled inputs including %line% values from foreach iterators and %user% / %user_home% values derived from system files to achieve arbitrary command execution with the privileges of the UAC process.

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.

Vector AV:L + UI:P (interacción del usuario) → T1203. eval() sin sanitización en sustitución de placeholders permite inyección de comandos shell, logrando T1059 con privilegios del proceso UAC.

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

Restrict Web-Based ContentPrivileged Account ManagementLimit Software InstallationExecution PreventionBehavior Prevention on EndpointDisable or Remove Feature or Program

Tecnologías afectadas (1)

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

UAC — UACAI

CWE

Referencias

JSON original (NVD)

Mostrar
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  "id": "CVE-2026-40032",
  "cveTags": [],
  "metrics": {
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        "ssvcData": {
          "id": "CVE-2026-40032",
          "role": "CISA Coordinator",
          "options": [
            {
              "exploitation": "none"
            },
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              "automatable": "no"
            },
            {
              "technicalImpact": "total"
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          "version": "2.0.3",
          "timestamp": "2026-04-09T19:32:33.886220Z"
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          "version": "4.0",
          "Recovery": "NOT_DEFINED",
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          "valueDensity": "NOT_DEFINED",
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          "modifiedAttackVector": "NOT_DEFINED",
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          "modifiedAttackComplexity": "NOT_DEFINED",
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          "modifiedAttackRequirements": "NOT_DEFINED",
          "modifiedPrivilegesRequired": "NOT_DEFINED",
          "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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  "affected": [
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              "versionType": "semver"
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  "published": "2026-04-08T22:16:23.827",
  "references": [
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      "url": "https://github.com/tclahr/uac/commit/50ace60e172e38feb78347bdf579311c23eff078",
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      "url": "https://github.com/tclahr/uac/pull/443",
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      "url": "https://mobasi.ai/sentinel",
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  "weaknesses": [
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      "description": [
        {
          "lang": "en",
          "value": "CWE-78"
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      ]
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  ],
  "descriptions": [
    {
      "lang": "en",
      "value": "UAC (Unix-like Artifacts Collector) before 3.3.0-rc1 contains a command injection vulnerability in the placeholder substitution and command execution pipeline where the _run_command() function passes constructed command strings directly to eval without proper sanitization. Attackers can inject shell metacharacters or command substitutions through attacker-controlled inputs including %line% values from foreach iterators and %user% / %user_home% values derived from system files to achieve arbitrary command execution with the privileges of the UAC process."
    },
    {
      "lang": "es",
      "value": "UAC (Unix-like Artifacts Collector) antes de 3.3.0-rc1 contiene una vulnerabilidad de inyección de comandos en la sustitución de marcadores de posición y la tubería de ejecución de comandos donde la función _run_command() pasa cadenas de comandos construidas directamente a eval sin la sanitización adecuada. Los atacantes pueden inyectar metacaracteres de shell o sustituciones de comandos a través de entradas controladas por el atacante, incluyendo valores %line% de iteradores foreach y valores %user% / %user_home% derivados de archivos del sistema para lograr la ejecución arbitraria de comandos con los privilegios del proceso UAC."
    }
  ],
  "lastModified": "2026-07-24T21:10:00.143",
  "sourceIdentifier": "disclosure@vulncheck.com"
}