CVE-2026-81955
Estado: En análisisAlta (8.8)—
Heap-based buffer overflow in Microsoft Graphics Component allows an unauthorized attacker to execute code over a network.
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: 0.84%
- Percentil entre todas las CVEs puntuadas: 56
- Fecha de la puntuación: 6/10/2026
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 Executionexecution95 % - Impacto principal
T1059Command and Scripting Interpreterexecution90 %
Buffer overflow en componente gráfico (CWE-122) con UI:R requiere interacción del usuario (abrir archivo preparado). AV:N/AC:L y CIA:H permiten ejecución de código remota tras explotación.
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-122
Referencias
JSON original (NVD)
Mostrar
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"published": "2026-09-08T18:20:59.120",
"references": [
{
"url": "https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-81955",
"source": "secure@microsoft.com"
}
],
"vulnStatus": "Undergoing Analysis",
"weaknesses": [
{
"type": "Secondary",
"source": "secure@microsoft.com",
"description": [
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"lang": "en",
"value": "CWE-122"
}
]
}
],
"descriptions": [
{
"lang": "en",
"value": "Heap-based buffer overflow in Microsoft Graphics Component allows an unauthorized attacker to execute code over a network."
}
],
"lastModified": "2026-09-24T23:19:14.357",
"sourceIdentifier": "secure@microsoft.com"
}