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TI-2026-21113 Aliases CVE-2026-26119GHSA-w5xc-rm8g-jf7m

Windows Admin Center Elevation of Privilege Vulnerability

Priority MEDIUM 53CWE-287Published · Updated

Key facts

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

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

Summary

Improper authentication in Windows Admin Center allows an authorized attacker to elevate privileges over a network.

Why it matters now

Exploitation None reported CISA SSVC · not in CISA KEV
EPSS 0.11329 96th percentileScored 2026-11-07
Fix Fixed Windows Admin Center (Microsoft): 2.6.4

SSVC decision points

CISA ADP · SSVC 2.0.3

Exploitation
None
Automatable
No
Technical impact
Total

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 2.6.42.6.4Patch availableCNA
  • Windows Admin Center VendorMicrosoft Affected 1809.0 to before 2.6.4 Fixed in 2.6.4 Patch available CNA

CPE configurations NVD · 1

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

Remediation

  • Fix · CNA Windows Admin Center (Microsoft) Fixed in 2.6.4

Vendor assessments

Microsoft

Microsoft's page for this CVE →

Impact
Elevation of Privilege
Exploited
No
Publicly disclosed
No
Exploitability
Exploitation More Likely
ProductStatusPlan or fix
Windows Admin CenterFixed 2.6.4 · Security Update

Timeline

  1. 2026-10-02 Threatist record created from CVE-2026-26119
  2. 2026-10-03 Alias added: GHSA-w5xc-rm8g-jf7m
  3. 2026-10-25 EPSS moved to the 95th–99th percentile

References

Patch 1

  • 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
  • TI-2023-13739 Windows Admin Center Spoofing Vulnerability CVSS 3.1HIGH 8.7
See all 20 →

Sources

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