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CVE-2026-81578

Estado: AnalizadaAlta (8.8)⚠ Explotación activa

An improper access control vulnerability exists in the web management interface of PaperCut MF and PaperCut NG. Under specific conditions, unauthenticated remote requests targeting administrative functions can trigger backend actions prior to the completion of access validation checks. This allows an unauthenticated remote attacker to modify certain system configurations.

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.

Vector AV:N sin autenticación (PR:N, UI:N) en interfaz web expuesta permite ejecución de acciones administrativas sin completar validación. VI:H confirma integridad comprometida en configuraciones del sistema.

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

Vulnerability ScanningRestrict File and Directory PermissionsPrivileged Account ManagementPassword PoliciesRemote Data StorageNetwork Segmentation

Tecnologías afectadas (2)

Papercut — Papercut MFPapercut — Papercut NG

CWE

Referencias

JSON original (NVD)

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  "published": "2026-08-28T16:18:29.600",
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      "value": "An improper access control vulnerability exists in the web management interface of PaperCut MF and PaperCut NG. Under specific conditions, unauthenticated remote requests targeting administrative functions can trigger backend actions prior to the  completion of access validation checks. This allows an unauthenticated remote attacker to modify certain system configurations."
    }
  ],
  "lastModified": "2026-09-14T00:16:56.207",
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  "cisaExploitAdd": "2026-08-31",
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}