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CVE-2026-86930

Estado: AnalizadaCrítica (9.1)—

An out-of-bounds read vulnerability in FileMaker Server for Linux allowed an attacker uploading a specially crafted image file to a container field to disclose process memory during thumbnail generation in FileMaker WebDirect. This vulnerability is addressed in FileMaker Server version 26.0.3.

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.

Aplicación web expuesta (FileMaker WebDirect, AV:N, sin autenticación) explotada mediante carga de archivo malicioso. Revelación de memoria de proceso (C:H) por CWE-125 (out-of-bounds read).

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

Filter Network TrafficVulnerability ScanningPrivileged Account ManagementNetwork SegmentationLimit Access to Resource Over NetworkApplication Isolation and Sandboxing

Tecnologías afectadas (1)

Claris — Filemaker Server

CWE

Referencias

JSON original (NVD)

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  "id": "CVE-2026-86930",
  "cveTags": [],
  "metrics": {
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      {
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          "role": "CISA Coordinator",
          "options": [
            {
              "exploitation": "none"
            },
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            },
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          ],
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          "timestamp": "2026-09-24T14:49:24.290341Z"
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  "published": "2026-09-23T18:17:09.720",
  "references": [
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      "url": "https://support.claris.com/s/answerview?anum=000049218&language=en_US",
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    }
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  "lastModified": "2026-10-05T18:18:13.140",
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