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Coverage › CVE-2021-34484

CVE-2021-34484 Unmapped

Microsoft Windows User Profile Service Privilege Escalation Vulnerability

Vendor / product
Microsoft — Windows
Description (CISA)
Microsoft Windows User Profile Service contains an unspecified vulnerability that allows for privilege escalation.
Added to KEV
2022-03-31
Due date
2022-04-21
Required action
Apply updates per vendor instructions.
Known ransomware use
Unknown
CWE
CWE-269
CISA notes
https://nvd.nist.gov/vuln/detail/CVE-2021-34484
Elsewhere
cve.org · NVD · CISA KEV · JSON

ATT&CK techniques

No public source states how this vulnerability is exploited in ATT&CK terms.

The only authoritative CVE → ATT&CK mapping in the open — CTID's Mappings Explorer, pinned to a KEV snapshot of 2025-07-28 and ATT&CK 16.1 — does not include CVE-2021-34484. CISA's catalogue carries no technique field. kevmap does not infer techniques from the CWE (CWE-269) — here is why — and does not guess.

This page will change state automatically if a mapping is published. What is shown above is everything CISA publishes about the entry.

Sigma rules tagged with this CVE

1 rule in SigmaHQ carries the tag cve.2021-34484. These are shown as detection content for the CVE itself. Their ATT&CK tags are deliberately not rendered here: a rule author's tag is not an authoritative statement of how the vulnerability is exploited, and this page does not show techniques for unmapped entries.

Author: Cybex · 2022-08-16 (modified 2025-11-03) · logsource: product=windows service=application · 52a85084-6989-40c3-8f32-091e12e17692
Detects potential exploitation attempts of CVE-2022-21919 or CVE-2021-34484 leading to local privilege escalation via the User Profile Service. During exploitation of this vulnerability, two logs (Provider_Name: Microsoft-Windows-User Profiles Service) with EventID 1511 and 1515 are created (EventID 1515 may generate many false positives). Additionally, the directory \Users\TEMP may be created during exploitation. This behavior was observed on Windows Server 2008.
CVE tags: CVE-2022-21919CVE-2021-34484