CVE-2018-8639
Estado: AnalizadaAlta (7.8)⚠ Explotación activa
An elevation of privilege vulnerability exists in Windows when the Win32k component fails to properly handle objects in memory, aka "Win32k Elevation of Privilege Vulnerability." This affects Windows 7, Windows Server 2012 R2, Windows RT 8.1, Windows Server 2008, Windows Server 2019, Windows Server 2012, Windows 8.1, Windows Server 2016, Windows Server 2008 R2, Windows 10, Windows 10 Servers. This CVE ID is unique from CVE-2018-8641.
CVSS
- Versión: 3.1
- Vector: CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
- Puntuación base: 7.8
Probabilidad de explotación (EPSS)
- Probabilidad de explotación en los próximos 30 días: 22%
- Percentil entre todas las CVEs puntuadas: 98
- 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).
CISA KEV — explotada activamente
- Añadida al catálogo: 3/3/2025
- Plazo de remediación: 24/3/2025
- Uso conocido en ransomware: Known
🎯 Técnicas ATT&CK
Cómo se explota esta vulnerabilidad y qué consigue el atacante, en el lenguaje de MITRE ATT&CK.
- Explotación
T1068Exploitation for Privilege Escalationprivilege escalation95 % - Impacto secundario
T1548Abuse Elevation Control Mechanismprivilege escalation90 %
Vulnerabilidad local de escalada de privilegios en Win32k (AV:L, PR:L) permite al atacante ejecutar código con privilegios elevados tras comprometer proceso sin privilegios, según descripción de fallo de manejo de objetos en memoria.
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 (13)
Microsoft — Windows 10 1507Microsoft — Windows 10 1607Microsoft — Windows 10 1703Microsoft — Windows 10 1709Microsoft — Windows 10 1803Microsoft — Windows 10 1809Microsoft — Windows 7Microsoft — Windows 8.1Microsoft — Windows RT 8.1Microsoft — Windows Server 2008Microsoft — Windows Server 2012Microsoft — Windows Server 2016Microsoft — Windows Server 2019
CWE
- CWE-404
- CWE-404
Referencias
- http://www.securityfocus.com/bid/106093
- https://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2018-8639
- http://www.securityfocus.com/bid/106093
- https://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2018-8639
- https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2018-8639
JSON original (NVD)
Mostrar
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