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TI-2025-15337 Aliases CVE-2025-21370GHSA-mxq3-vwh4-3gfm

Windows Virtualization-Based Security (VBS) Enclave Elevation of Privilege Vulnerability

Priority MEDIUM 41CWE-20Published · Updated

Key facts

Attack vector
Local
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 · NVD. Fix status from CNA and Microsoft. Impact type from Microsoft.

Summary

Windows Virtualization-Based Security (VBS) Enclave Elevation of Privilege Vulnerability

Why it matters now

Exploitation None reported CISA SSVC · not in CISA KEV
EPSS 0.00474 41st percentileScored 2026-11-07
Fix Fixed Microsoft: 2 updates

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 11 version 22H210.0.22621.0 to before 10.0.22621.475110.0.22621.4751Patch availableCNA
MicrosoftWindows 11 version 22H310.0.22631.0 to before 10.0.22631.475110.0.22631.4751Patch availableCNA
MicrosoftWindows 11 Version 23H210.0.22631.0 to before 10.0.22631.475110.0.22631.4751Patch availableCNA
MicrosoftWindows 11 Version 24H210.0.26100.0 to before 10.0.26100.289410.0.26100.2894Patch availableCNA
  • Windows 11 version 22H2 VendorMicrosoft Affected 10.0.22621.0 to before 10.0.22621.4751 Fixed in 10.0.22621.4751 Patch available CNA
  • Windows 11 version 22H3 VendorMicrosoft Affected 10.0.22631.0 to before 10.0.22631.4751 Fixed in 10.0.22631.4751 Patch available CNA
  • Windows 11 Version 23H2 VendorMicrosoft Affected 10.0.22631.0 to before 10.0.22631.4751 Fixed in 10.0.22631.4751 Patch available CNA
  • Windows 11 Version 24H2 VendorMicrosoft Affected 10.0.26100.0 to before 10.0.26100.2894 Fixed in 10.0.26100.2894 Patch available CNA

CPE configurations NVD · 3

CPEVersionsRoleVendor
cpe:2.3:o:microsoft:windows_11_22h2:*:*:*:*:*:*:*:*before 10.0.22621.4751VulnerableMicrosoft
cpe:2.3:o:microsoft:windows_11_23h2:*:*:*:*:*:*:*:*before 10.0.22631.4751VulnerableMicrosoft
cpe:2.3:o:microsoft:windows_11_24h2:*:*:*:*:*:*:*:*before 10.0.26100.2894VulnerableMicrosoft
  • cpe:2.3:o:microsoft:windows_11_22h2:*:*:*:*:*:*:*:* Versions before 10.0.22621.4751 Vulnerable ·Microsoft
  • cpe:2.3:o:microsoft:windows_11_23h2:*:*:*:*:*:*:*:* Versions before 10.0.22631.4751 Vulnerable ·Microsoft
  • cpe:2.3:o:microsoft:windows_11_24h2:*:*:*:*:*:*:*:* Versions before 10.0.26100.2894 Vulnerable ·Microsoft

Remediation

Microsoft 2 updates

  • KB5050021
    Security Update
    • Windows 11 Version 22H2 for ARM64-based Systems 10.0.22621.4751
    • Windows 11 Version 22H2 for x64-based Systems 10.0.22621.4751
    • Windows 11 Version 23H2 for ARM64-based Systems 10.0.22631.4751
    • Windows 11 Version 23H2 for x64-based Systems 10.0.22631.4751
  • KB5050009
    Security Update
    • Windows 11 Version 24H2 for ARM64-based Systems 10.0.26100.2894
    • Windows 11 Version 24H2 for x64-based Systems 10.0.26100.2894
    • Windows Server 2025 10.0.26100.2894
    • Windows Server 2025 (Server Core installation) 10.0.26100.2894

Vendor assessments

Microsoft

Microsoft's page for this CVE →

Impact
Elevation of Privilege
Exploited
No
Publicly disclosed
No
Exploitability
Exploitation Less Likely

Timeline

  1. 2026-10-02 Threatist record created from CVE-2025-21370
  2. 2026-10-03 Alias added: GHSA-mxq3-vwh4-3gfm

References

Patch 1

  • TI-2025-24062 Windows SMB Client Elevation of Privilege Vulnerability KEVCVSS 3.1HIGH 8.8
  • TI-2025-24042 Internet Shortcut Files Remote Code Execution Vulnerability KEVCVSS 3.1HIGH 8.8
  • TI-2024-32708 Windows Task Scheduler Elevation of Privilege Vulnerability KEVCVSS 3.1HIGH 8.8
  • TI-2024-29106 Windows MSHTML Platform Spoofing Vulnerability KEVCVSS 3.1HIGH 8.8
  • TI-2024-19802 Windows MSHTML Platform Security Feature Bypass Vulnerability KEVCVSS 3.1HIGH 8.8
  • TI-2024-19751 SmartScreen Prompt Security Feature Bypass Vulnerability KEVCVSS 3.1HIGH 8.8
See all 1651 →

Sources

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