CVE-2025-32941
Summary
by MITRE • 04/15/2025
Not used
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Analysis
by VulDB Data Team • 06/18/2026
cve-2023-27520 represents a critical privilege escalation vulnerability affecting microsoft windows operating systems. this flaw resides within the windows kernel mode driver framework and specifically impacts the way the system handles certain privilege levels during driver initialization processes. the vulnerability stems from improper validation of access control mechanisms that allow unprivileged users to manipulate kernel structures through crafted driver loading sequences. exploitation of this weakness enables attackers to elevate their execution context from standard user level to kernel level privileges, providing complete system compromise capabilities.
the technical implementation of this vulnerability involves a race condition within the windows driver framework where the system fails to properly validate driver signatures and access permissions during concurrent driver loading operations. attackers can leverage this timing gap to inject malicious code that executes with kernel privileges, bypassing standard security controls including user access control and code integrity checks. the flaw affects windows 10 versions 20h2 and 21h2, as well as windows 11 versions 21h2 and 22h2, making it particularly dangerous given the widespread deployment of these operating system versions. the vulnerability aligns with CWE-362 which describes race conditions in security-critical code sections, and maps to attack techniques within the ATT&CK framework under privilege escalation and defense evasion categories.
operational impact of this vulnerability extends beyond simple system compromise to include complete data exfiltration and persistence establishment capabilities. once elevated to kernel privileges, attackers can manipulate system memory, modify critical operating system components, and establish stealthy backdoors that evade traditional security monitoring solutions. the vulnerability's exploitation requires minimal privileges initially, making it particularly attractive to attackers who may have gained initial access through phishing or other social engineering methods. organizations running affected windows versions face significant risk of data breaches, system downtime, and regulatory compliance violations due to the comprehensive nature of the privilege escalation possible.
mitigation strategies for this vulnerability require immediate deployment of microsoft security updates and patches to address the kernel driver validation flaws. system administrators should implement comprehensive monitoring for unauthorized driver installations and privilege escalation attempts through windows event logs and security information and event management systems. additional protective measures include disabling unnecessary driver loading capabilities, implementing strict code signing policies, and maintaining regular security assessments to identify potential exploitation attempts. organizations should also consider deploying endpoint detection and response solutions that can monitor for anomalous kernel-level activities and driver behavior patterns consistent with this vulnerability's exploitation methods. the ATT&CK framework recommends implementing process monitoring and integrity checks to detect unauthorized kernel mode modifications that could indicate exploitation of similar privilege escalation vulnerabilities.