CVE-2025-66287
Estado: AplazadaAlta (8.8)—
A flaw was found in WebKitGTK. Processing malicious web content can cause an unexpected process crash due to improper memory handling.
CVSS
- Versión: 3.1
- Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
- Puntuación base: 8.8
Probabilidad de explotación (EPSS)
- Probabilidad de explotación en los próximos 30 días: 0.47%
- Percentil entre todas las CVEs puntuadas: 39
- Fecha de la puntuación: 5/10/2026
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.
- Explotación
T1203Exploitation for Client Executionexecution90 % - Impacto principal
T1059Command and Scripting Interpreterexecution75 %
AV:N/UI:R indica explotación de cliente requiriendo interacción (abrir web maliciosa). CWE-120 (buffer overflow) en WebKit sugiere ejecución de código. El crash puede ser precursor o alternativa a RCE.
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
Tecnologías afectadas (1)
⚠ Inferidas por IA a partir de la descripción — NVD aún no ha analizado esta CVE; no son CPE verificados.
CWE
- CWE-120
Referencias
- https://access.redhat.com/errata/RHSA-2025:22789
- https://access.redhat.com/errata/RHSA-2025:22790
- https://access.redhat.com/errata/RHSA-2025:23110
- https://access.redhat.com/errata/RHSA-2025:23433
- https://access.redhat.com/errata/RHSA-2025:23434
- https://access.redhat.com/errata/RHSA-2025:23451
- https://access.redhat.com/errata/RHSA-2025:23452
- https://access.redhat.com/errata/RHSA-2025:23583
- https://access.redhat.com/errata/RHSA-2025:23591
- https://access.redhat.com/errata/RHSA-2025:23742
- https://access.redhat.com/errata/RHSA-2025:23743
- https://access.redhat.com/security/cve/CVE-2025-66287
- https://bugzilla.redhat.com/show_bug.cgi?id=2418857
- https://webkitgtk.org/security/WSA-2025-0009.html
JSON original (NVD)
Mostrar
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"source": "secalert@redhat.com",
"description": [
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}
]
}
],
"descriptions": [
{
"lang": "en",
"value": "A flaw was found in WebKitGTK. Processing malicious web content can cause an unexpected process crash due to improper memory handling."
},
{
"lang": "es",
"value": "Se encontró un fallo en WebKitGTK. El procesamiento de contenido web malicioso puede causar una caída inesperada del proceso debido a un manejo inadecuado de la memoria."
}
],
"lastModified": "2026-09-25T23:10:00.463",
"sourceIdentifier": "secalert@redhat.com"
}