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TI-2021-08639 Aliases CVE-2021-27066GHSA-x3x8-r6pj-f993

Windows Admin Center Security Feature Bypass Vulnerability

Priority LOW 26Published · Updated

Key facts

Attack vector
Network
Privileges required
Low
User interaction
None
Attack complexity
Low
Impact type
—
Confidentiality · integrity · availability
Low · None · None
Fix status
Fixed

Attack profile from CVSS 3.1 · CNA. Fix status from CNA.

Summary

Windows Admin Center Security Feature Bypass Vulnerability

Why it matters now

EPSS 0.03038 87th percentileScored 2026-11-08
Fix Fixed Windows Admin Center (Microsoft): publication

SSVC decision points

Not available: CISA has not published SSVC decision points for this record.

Affected products

VendorProductAffected versionsFixed inStatusSource
MicrosoftWindows Admin Center1809.0 to before publicationpublicationPatch availableCNA
  • Windows Admin Center VendorMicrosoft Affected 1809.0 to before publication Fixed in publication Patch available CNA

CPE configurations NVD · 1

CPEVersionsRoleVendor
cpe:2.3:a:microsoft:windows_admin_center:-:*:*:*:*:*:*:*not specified by NVDVulnerableMicrosoft
  • cpe:2.3:a:microsoft:windows_admin_center:-:*:*:*:*:*:*:* Versions not specified by NVD Vulnerable ·Microsoft

Remediation

  • Fix · CNA Windows Admin Center (Microsoft) Fixed in publication

Timeline

  1. 2026-10-02 Threatist record created from CVE-2021-27066
  2. 2026-10-03 Alias added: GHSA-x3x8-r6pj-f993

References

Patch 2

  • TI-2026-21113 Windows Admin Center Elevation of Privilege Vulnerability CVSS 3.1HIGH 8.8
  • TI-2026-44936 Microsoft 365 Admin Center Elevation of Privilege Vulnerability CVSS 3.1CRITICAL 9.8
  • TI-2019-00575 An elevation of privilege vulnerability exists when Windows Admin Center improperly… CVSS 3.0CRITICAL 9.8
  • TI-2026-40570 Windows Admin Center (WAC) Remote Code Execution Vulnerability CVSS 3.1HIGH 8.8
  • TI-2026-40569 Windows Admin Center (WAC) Remote Code Execution Vulnerability CVSS 3.1HIGH 8.8
  • TI-2026-40543 Windows Admin Center Elevation of Privilege Vulnerability CVSS 3.1HIGH 8.8
See all 20 →

Sources

This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences