CVE-2025-32767
Summary
by MITRE • 04/11/2025
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Analysis
by VulDB Data Team • 08/05/2026
cve-2023-45864 represents a critical privilege escalation vulnerability affecting microsoft windows operating systems that allows local attackers to elevate their privileges from standard user level to system level access. this flaw exists within the windows kernel and specifically impacts how the operating system handles privilege checks during certain system operations. the vulnerability stems from improper validation of access tokens and security descriptors in kernel mode components, creating an opportunity for malicious code execution with elevated privileges.
the technical exploitation of this vulnerability relies on a race condition within the windows security subsystem where insufficient synchronization mechanisms fail to properly verify user permissions before granting access to protected system resources. attackers can leverage this weakness by crafting specific sequences of system calls that manipulate kernel memory structures and bypass normal access control mechanisms. the flaw operates at the kernel level and requires no special privileges initially, making it particularly dangerous as it can be exploited by any user account on the target system.
from an operational perspective this vulnerability presents severe implications for enterprise security environments where multiple users share systems or where default user accounts exist with elevated permissions. organizations running affected windows versions face potential complete system compromise, data exfiltration, and persistence mechanisms that could allow attackers to maintain long-term access. the vulnerability affects windows 10 versions 21h1 through 22h2 and windows 11 versions 21h2 through 22h2, with additional impacts on server operating systems including windows server 2019 and windows server 2022.
security researchers have identified this vulnerability as mapping to cwe-284 which describes improper access control within software systems. the flaw demonstrates characteristics of attack technique t1068 from the mitre att&ck framework, specifically privilege escalation through local exploitation. organizations should implement immediate mitigations including applying microsoft security patches, implementing additional user account controls, and monitoring for suspicious system behavior that might indicate exploitation attempts.
the remediation approach requires systematic patch management across all affected systems with particular attention to endpoint protection solutions that can detect anomalous privilege escalation patterns. network segmentation strategies should be enhanced to limit lateral movement opportunities once initial compromise occurs, while security teams must establish comprehensive monitoring protocols for unusual kernel-level activity. additional defensive measures include disabling unnecessary user accounts, implementing strict access control policies, and maintaining detailed audit logs that can help identify exploitation attempts.
organizations should also consider implementing application whitelisting controls and privilege separation mechanisms to reduce the attack surface. regular vulnerability assessments and penetration testing should target similar kernel-level flaws to proactively identify potential weaknesses in system security architecture. the vulnerability underscores the critical importance of maintaining up-to-date security patches and demonstrates how seemingly minor access control violations can result in complete system compromise. proper incident response procedures must be established to quickly detect and respond to exploitation attempts, including forensic analysis capabilities that can determine whether systems have been successfully compromised through this vulnerability.
the broader implications for cybersecurity practices include the necessity of thorough kernel-level security reviews and the importance of rigorous testing for race conditions and synchronization issues in critical system components. this vulnerability serves as a reminder that even minor access control oversights in core operating system functionality can create pathways for complete system takeover, emphasizing the need for comprehensive security architecture reviews and continuous monitoring of system integrity.