CVE-2021-34484
Microsoft Windows User Profile Service Privilege Escalation Vulnerability
CVSS
7.8
Alto
EPSS
21.7%
p97
KEV
SÍ
31 mar 2022
Exploit Today
79
0-100
Publicado: 12 ago 2021 · Última mod.: 10 ago 2026
15.6%EPSS · 30 días21.7%
2026-08-022026-08-31
Producto
Microsoft / Windows
Vulnerabilidad
Microsoft Windows User Profile Service Privilege Escalation Vulnerability
Añadido a KEV
31 mar 2022
Remediar antes de
21 abr 2022
Uso conocido en ransomware
No
Descripción resumida
Microsoft Windows User Profile Service contains an unspecified vulnerability that allows for privilege escalation.
Acción requerida
Apply updates per vendor instructions.
Notas
https://nvd.nist.gov/vuln/detail/CVE-2021-34484
Windows User Profile Service Elevation of Privilege Vulnerability
CVECVSSEPSSKEVRExplotTítuloVis.
CVE-2026-322024.3 MED99.2%
KEV—80Microsoft Windows Protection Mechanism Failure Vulnerability17dCVE-2026-208055.5 MED91.8%
KEV—78Microsoft Windows Information Disclosure Vulnerability32dCVE-2025-266337.0 ALT98.1%
KEV—79Microsoft Windows Management Console (MMC) Improper Neutralization Vulnerability26dCVE-2024-490398.8 ALT96.3%
KEV—79Microsoft Windows Task Scheduler Privilege Escalation Vulnerability27dCVE-2024-434618.8 ALT98.9%
KEV—80Microsoft Windows MSHTML Platform Spoofing Vulnerability21dCVE-2024-382175.4 MED95.3%
KEV—79Microsoft Windows Mark of the Web (MOTW) Protection Mechanism Failure Vulnerability21d