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CVE-2021-34484: Microsoft Windows User Profile Service Privilege Escalation Vulnerability
Microsoft Windows · in CISA KEV since 2022-03-31
2022-03-31added to KEV
2022-04-21federal remediation due date
21.83%EPSS exploit probability (30 days) 97.5th percentile
7.8 HIGHCVSS 3.1
Unknownknown ransomware use
231days from NVD publication to KEV
What it is
Microsoft Windows User Profile Service contains an unspecified vulnerability that allows for privilege escalation.
Required action (CISA)
Apply updates per vendor instructions.
| CWE | CWE-269 |
|---|---|
| CVSS vector | CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H |
| NVD published | 2021-08-12 (Analyzed) |
Original records: NVD · CISA KEV · JSON: /api/cve/CVE-2021-34484.json · all KEV CVEs
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Get the full file: Exploited Vulnerabilities Brief – September 2026 ($29): this month's KEV additions ranked by EPSS, ransomware use and due date, ready to hand to a patch team. Checkout by Polar.