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TI-2026-42211 Aliases CVE-2026-58643GHSA-279f-474x-phh7

Windows Admin Center Spoofing Vulnerability

Priority LOW 27CWE-79Published · Updated

Key facts

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

Attack profile from CVSS 3.1 · CNA. Fix status from CNA. Impact type from Microsoft.

Summary

Improper neutralization of input during web page generation ('cross-site scripting') in Windows Admin Center allows an unauthorized attacker to perform spoofing over a network.

Why it matters now

Exploitation None reported CISA SSVC · not in CISA KEV
EPSS 0.00413 35th percentileScored 2026-11-07
Fix Fixed Windows Admin Center (Microsoft): 2.6.7

SSVC decision points

CISA ADP · SSVC 2.0.3

Exploitation
None
Automatable
No
Technical impact
Partial

The decision (Track, Attend, Act) also depends on your mission and well-being impact; see CISA's SSVC guide.

Affected products

VendorProductAffected versionsFixed inStatusSource
MicrosoftWindows Admin Center1809.0 to before 2.6.72.6.7Patch availableCNA
  • Windows Admin Center VendorMicrosoft Affected 1809.0 to before 2.6.7 Fixed in 2.6.7 Patch available CNA

CPE configurations NVD · 1

CPEVersionsRoleVendor
cpe:2.3:a:microsoft:windows_admin_center:*:*:*:*:*:*:*:*1809 to before 2511VulnerableMicrosoft
  • cpe:2.3:a:microsoft:windows_admin_center:*:*:*:*:*:*:*:* Versions 1809 to before 2511 Vulnerable ·Microsoft

Remediation

  • Fix · CNA Windows Admin Center (Microsoft) Fixed in 2.6.7

Vendor assessments

Microsoft

Microsoft's page for this CVE →

Impact
Spoofing
Exploited
No
Publicly disclosed
No
Exploitability
—
ProductStatusPlan or fix
Windows Admin CenterFixed 2.6.7 · Security Update

Timeline

  1. 2026-10-02 Threatist record created from CVE-2026-58643
  2. 2026-10-03 Alias added: GHSA-279f-474x-phh7

References

Patch 1

  • 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