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CVE-2021-26828

Estado: AnalizadaAlta (8.8)⚠ Explotación activa

OpenPLC ScadaBR through 0.9.1 on Linux and through 1.12.4 on Windows allows remote authenticated users to upload and execute arbitrary JSP files via view_edit.shtm.

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).

CISA KEV — explotada activamente

🎯 Técnicas ATT&CK

Cómo se explota esta vulnerabilidad y qué consigue el atacante, en el lenguaje de MITRE ATT&CK.

Usuario remoto autenticado explota servicio remoto para cargar y ejecutar archivos JSP arbitrarios, logrando web shell y ejecución de comandos en el servidor. CWE-434 confirma carga de archivo malicioso.

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

Disable or Remove Feature or ProgramVulnerability ScanningUser Account ManagementThreat Intelligence ProgramPrivileged Account ManagementNetwork Segmentation

Tecnologías afectadas (1)

Scadabr — Scadabr

CWE

Referencias

JSON original (NVD)

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    "cvssMetricV31": [
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      "lang": "en",
      "value": "OpenPLC ScadaBR through 0.9.1 on Linux and through 1.12.4 on Windows allows remote authenticated users to upload and execute arbitrary JSP files via view_edit.shtm."
    },
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      "lang": "es",
      "value": "OpenPLC ScadaBR versiones hasta 0.9.1 en Linux y versiones hasta 1.12.4 en Windows permite a usuarios remotos autenticados cargar y ejecutar archivos JSP arbitrarios por medio del archivo view_edit.shtm"
    }
  ],
  "lastModified": "2026-06-17T03:43:49.877",
  "cisaActionDue": "2025-12-24",
  "cisaExploitAdd": "2025-12-03",
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}