CVE-2026-83568

Awaiting Analysis Awaiting Analysis - Queue

Improper Access Control in Windows Kernel-Mode Drivers

Publication date: 2026-10-13

Last updated on: 2026-10-13

Assigner: Microsoft Corporation

Description

Improper access control in Windows Kernel-Mode Drivers allows an authorized attacker to elevate privileges locally.

CVSS Scores

EPSS Scores

Probability:
Percentile:

Meta Information

Published

2026-10-13

Last Modified

2026-10-13

Generated

2026-10-19

AI Q&A

2026-10-14

EPSS Evaluated

2026-10-18

NVD

CVE-2026-83568

EUVD

EUVD-2026-99918

Affected Vendors & Products

Vendor	Product	Version / Range
Microsoft	Windows	11 Version 24H2 10.0.26100.0
Microsoft	Windows	11 Version 25H2 10.0.26200.0
Microsoft	Windows	11 version 26H1 10.0.28000.0
Microsoft	Windows	11 Version 26H2 10.0.26300.0
Microsoft	Windows	Server 2025 10.0.26100.0
Microsoft	Windows	Server 2025 (Server Core installation) 10.0.26100.0

Helpful Resources

Exploitability

CWE

KEV

CWE ID	Description
CWE-862	The product does not perform an authorization check when an actor attempts to access a resource or perform an action.

Attack-Flow Graph

Executive Summary

This vulnerability is an improper access control issue in Windows Kernel-Mode Drivers. An authorized attacker can exploit it to elevate their privileges locally on a system.

Detection Guidance

Detection requires checking for unauthorized privilege escalation attempts or unusual kernel-mode driver activity. Monitor system logs for unexpected privilege changes and inspect kernel drivers for modifications. Use tools like Windows Event Viewer to review Security logs for Event ID 4672 (Special Privileges Assigned) and Event ID 4688 (Process Creation).

Commands to check kernel drivers: 'driverquery /v' to list all drivers, 'sc query' to inspect services, and 'sigtool verify' (if available) to check driver signatures. Ensure all drivers are signed by Microsoft.

Impact Analysis

An attacker could gain higher-level permissions on your system, allowing them to install programs, view or delete data, or create new accounts with full user rights.

Compliance Impact

This vulnerability allows local privilege escalation in Windows systems, which could enable unauthorized access to sensitive data or system functions. Such access may violate compliance requirements under GDPR (data protection) and HIPAA (health information security) by exposing personal or protected health information.

Mitigation Strategies

Apply the latest Windows security updates from Microsoft Update to patch the improper access control in Kernel-Mode Drivers. Monitor Microsoft's advisory for additional guidance.

Hi! I’m here to help you understand CVE-2026-83568. Ask me anything about the vulnerability, its impact, or mitigation strategies.

0/70