March 31, 2022 · Applied Cybernetics Group
CVE-2021-34484 — Microsoft Windows
Microsoft Windows User Profile Service Privilege Escalation Vulnerability
- Added to KEV
2022-03-31- Federal due date
2022-04-21- Vendor
- Microsoft
- Product
- Windows
- EPSS
- 97.5th percentile (score 0.218, as of
2026-09-16) - NVD CVSS v3.1
- 7.8 (HIGH)
- Ransomware use
- Unknown
- Upstream
- https://nvd.nist.gov/vuln/detail/CVE-2021-34484
CISA short description
Microsoft Windows User Profile Service contains an unspecified vulnerability that allows for privilege escalation.
Required action
Apply updates per vendor instructions.
NVD description
Windows User Profile Service Elevation of Privilege Vulnerability