CVE-2019-0863
Estado: AnalizadaAlta (7.8)⚠ Explotación activa
An elevation of privilege vulnerability exists in the way Windows Error Reporting (WER) handles files, aka 'Windows Error Reporting Elevation of Privilege Vulnerability'.
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: 5.21%
- Percentil entre todas las CVEs puntuadas: 92
- 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: 3/11/2021
- Plazo de remediación: 3/5/2022
- Uso conocido en ransomware: Unknown
🎯 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 escalation80 %
Vulnerabilidad de escalada de privilegios en Windows Error Reporting (WER) con acceso local (AV:L/PR:L). Permite obtener permisos elevados para ejecutar comandos, manipular cuentas y eludir controles de seguridad.
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 (16)
Microsoft — Windows 10 1507Microsoft — Windows 10 1607Microsoft — Windows 10 1703Microsoft — Windows 10 1709Microsoft — Windows 10 1803Microsoft — Windows 10 1809Microsoft — Windows 10 1903Microsoft — Windows 7Microsoft — Windows 8.1Microsoft — Windows RT 8.1Microsoft — Windows Server 1803Microsoft — Windows Server 1903Microsoft — Windows Server 2008Microsoft — Windows Server 2012Microsoft — Windows Server 2016Microsoft — Windows Server 2019
CWE
- NVD-CWE-noinfo
Referencias
- http://packetstormsecurity.com/files/153008/Angry-Polar-Bear-2-Microsoft-Windows-Error-Reporting-Local-Privilege-Escalation.html
- https://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2019-0863
- http://packetstormsecurity.com/files/153008/Angry-Polar-Bear-2-Microsoft-Windows-Error-Reporting-Local-Privilege-Escalation.html
- https://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2019-0863
- https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2019-0863
JSON original (NVD)
Mostrar
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