CVE-2021-34484CISA KEV

Microsoft Windows User Profile Service Privilege Escalation Vulnerability

Severity unknownCVSS unknownCheck the vendor advisory for fixed versions

CISA lists this Microsoft vulnerability as known exploited. Its MSRC release detail is outside this installation's collected history.

CISA KEV Check MSRC

CISA catalog record

Microsoft Windows User Profile Service contains an unspecified vulnerability that allows for privilege escalation.

Product: Windows
Added to KEV: 31 Mar 2022
Federal remediation due: 21 Apr 2022
Known ransomware use: Not reported

Page history

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Field-level log (2)

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23 Oct 2026 · 09:33:49 UTC Source coverage: cisa-kevIncomplete → Current
23 Oct 2026 · 08:31:50 UTC Source coverage: cisa-kevCurrent → Incomplete

Explore global source statements, affected packages and advisory history for CVE-2021-34484. The catalog has a separate collection scope from Microsoft release records.

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CVE-2021-34484 · CVE overview and exploitation status

cve-program · CVE-2021-34484

https://msrc.microsoft.com/update-guide/vulnerability/CVE-2021-34484

Related changes

Linked by CVE identifier

Microsoft Windows User Profile Service Privilege Escalation Vulnerability · CISA KEV deadline · 21 Apr 2022
Microsoft Windows User Profile Service Privilege Escalation Vulnerability · Added to CISA KEV · 31 Mar 2022