Junglewise Threat Intelligence

CVE-2021-34484: Microsoft Windows User Profile Service Privilege Escalation Vulnerability

CVE-2021-34484 · Severity: critical · CVSS 7.8 · Exploited in the wild · Published 2022-03-31

Technologies: Microsoft Windows 7, Microsoft Windows Server 2016, Microsoft Windows, Microsoft Windows Server 2012, Microsoft Windows 8.1, Microsoft Windows Server 2008, Microsoft Windows Server 2019, Microsoft Windows 10. Vendors: Microsoft.

Executive brief

The Microsoft Windows User Profile Service contains an elevation of privilege vulnerability that allows a local attacker to gain SYSTEM privileges. The vulnerability has been observed being exploited in the wild and is included in CISA's Known Exploited Vulnerabilities catalog.

Affected products

  • Microsoft Windows 10 up to (excluding) 10.0.10240.19022
  • Microsoft Windows 7 Service Pack 1
  • Microsoft Windows 8.1
  • Microsoft Windows Server 2008 Service Pack 2
  • Microsoft Windows Server 2012
  • Microsoft Windows Server 2016 up to (excluding) 10.0.14393.4583
  • Microsoft Windows Server 2019 up to (excluding) 10.0.17763.2114

Timeline

  • 2021-08-23: disclosed: Initial analysis by NIST and CVSS assignment.
  • 2022-03-31: kev added: Added to CISA Known Exploited Vulnerabilities Catalog.
  • 2022-03-31: advisory: NVD publication date.

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