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TI-2026-37135 Aliases CVE-2026-50396GHSA-xcq8-m6wr-w65p

Windows Kernel-Mode Driver Elevation of Privilege Vulnerability

Priority LOW 36CWE-416Published · 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

Use after free in Windows Kernel-Mode Drivers allows an authorized attacker to elevate privileges locally.

Why it matters now

Exploitation None reported CISA SSVC · not in CISA KEV
EPSS 0.00279 20th percentileScored 2026-11-07
Fix Fixed Microsoft: 3 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 24H210.0.26100.0 to before 10.0.26100.887510.0.26100.8875Patch availableCNA
MicrosoftWindows 11 Version 25H210.0.26200.0 to before 10.0.26200.887510.0.26200.8875Patch availableCNA
MicrosoftWindows 11 version 26H110.0.28000.0 to before 10.0.28000.252510.0.28000.2525Patch availableCNA
MicrosoftWindows Server 202510.0.26100.0 to before 10.0.26100.3315810.0.26100.33158Patch availableCNA
MicrosoftWindows Server 2025 (Server Core installation)10.0.26100.0 to before 10.0.26100.3315810.0.26100.33158Patch availableCNA
  • Windows 11 Version 24H2 VendorMicrosoft Affected 10.0.26100.0 to before 10.0.26100.8875 Fixed in 10.0.26100.8875 Patch available CNA
  • Windows 11 Version 25H2 VendorMicrosoft Affected 10.0.26200.0 to before 10.0.26200.8875 Fixed in 10.0.26200.8875 Patch available CNA
  • Windows 11 version 26H1 VendorMicrosoft Affected 10.0.28000.0 to before 10.0.28000.2525 Fixed in 10.0.28000.2525 Patch available CNA
  • Windows Server 2025 VendorMicrosoft Affected 10.0.26100.0 to before 10.0.26100.33158 Fixed in 10.0.26100.33158 Patch available CNA
  • Windows Server 2025 (Server Core installation) VendorMicrosoft Affected 10.0.26100.0 to before 10.0.26100.33158 Fixed in 10.0.26100.33158 Patch available CNA

CPE configurations NVD · 5

CPEVersionsRoleVendor
cpe:2.3:o:microsoft:windows_11_24h2:*:*:*:*:*:*:*:*before 10.0.26100.8875VulnerableMicrosoft
cpe:2.3:o:microsoft:windows_11_25h2:*:*:*:*:*:*:*:*before 10.0.26200.8875VulnerableMicrosoft
cpe:2.3:o:microsoft:windows_11_26h1:*:*:*:*:*:*:x64:*before 10.0.28000.2269VulnerableMicrosoft
cpe:2.3:o:microsoft:windows_11_26h1:*:*:*:*:*:*:arm64:*before 10.0.28000.2525VulnerableMicrosoft
cpe:2.3:o:microsoft:windows_server_2025:*:*:*:*:*:*:*:*before 10.0.26100.33158VulnerableMicrosoft
  • cpe:2.3:o:microsoft:windows_11_24h2:*:*:*:*:*:*:*:* Versions before 10.0.26100.8875 Vulnerable ·Microsoft
  • cpe:2.3:o:microsoft:windows_11_25h2:*:*:*:*:*:*:*:* Versions before 10.0.26200.8875 Vulnerable ·Microsoft
  • cpe:2.3:o:microsoft:windows_11_26h1:*:*:*:*:*:*:x64:* Versions before 10.0.28000.2269 Vulnerable ·Microsoft
  • cpe:2.3:o:microsoft:windows_11_26h1:*:*:*:*:*:*:arm64:* Versions before 10.0.28000.2525 Vulnerable ·Microsoft
  • cpe:2.3:o:microsoft:windows_server_2025:*:*:*:*:*:*:*:* Versions before 10.0.26100.33158 Vulnerable ·Microsoft

Remediation

Microsoft 3 updates

  • KB5101650
    Security Update
    • Windows 11 Version 24H2 for ARM64-based Systems 10.0.26100.8875
    • Windows 11 Version 24H2 for x64-based Systems 10.0.26100.8875
    • Windows 11 Version 25H2 for ARM64-based Systems 10.0.26200.8875
    • Windows 11 Version 25H2 for x64-based Systems 10.0.26200.8875
  • KB5101649
    Security Update
    • Windows 11 Version 26H1 for ARM64-based Systems 10.0.28000.2525
    • Windows 11 version 26H1 for x64-based Systems 10.0.28000.2525
  • KB5099536
    Security Update
    • Windows Server 2025 10.0.26100.33158
    • Windows Server 2025 (Server Core installation) 10.0.26100.33158

Vendor assessments

Microsoft

Microsoft's page for this CVE →

Impact
Elevation of Privilege
Exploited
No
Publicly disclosed
No
Exploitability
Exploitation Unlikely

Timeline

  1. 2026-10-02 Threatist record created from CVE-2026-50396
  2. 2026-10-03 Alias added: GHSA-xcq8-m6wr-w65p

References

Patch 1

  • TI-2026-26194 Windows Internet Key Exchange (IKE) Service Extensions Remote Code Execution Vulnerability KEVCVSS 3.1CRITICAL 9.8
  • TI-2026-73128 Windows Shell Security Feature Bypass Vulnerability KEVCVSS 3.1HIGH 8.8
  • TI-2026-17367 MSHTML Framework Security Feature Bypass Vulnerability KEVCVSS 3.1HIGH 8.8
  • TI-2026-17364 Windows Shell Security Feature Bypass Vulnerability KEVCVSS 3.1HIGH 8.8
  • 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
See all 3558 →

Sources

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