CVE-2022-37983 in Windows
Summary
by MITRE • 10/11/2022
Microsoft DWM Core Library Elevation of Privilege Vulnerability.
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Analysis
by VulDB Data Team • 06/20/2026
The Microsoft Desktop Window Manager (DWM) Core Library vulnerability CVE-2022-37983 represents a critical elevation of privilege flaw that affects Windows operating systems. This vulnerability resides within the Desktop Window Manager component responsible for rendering graphical user interfaces and managing window compositions. The flaw allows authenticated attackers with local system access to escalate their privileges from standard user level to SYSTEM level, effectively compromising the entire operating system. The vulnerability stems from improper handling of privilege checks within the DWM core library functions that manage window rendering and composition operations.
This security weakness manifests through insufficient validation of access control mechanisms within the Windows graphics subsystem. When legitimate applications attempt to interact with DWM services through specific API calls, the vulnerability allows malicious code to bypass normal privilege verification processes. The flaw specifically impacts the way DWM handles privilege escalation during window management operations, creating an opportunity for attackers to exploit the system's security model. According to CWE classification, this vulnerability maps to CWE-276: Improper Ownership Setting, as it involves incorrect privilege management within system components. The vulnerability affects multiple Windows versions including Windows 10 and Windows Server 2019, making it a widespread concern across enterprise environments.
The operational impact of CVE-2022-37983 extends beyond simple privilege escalation, as it provides attackers with complete system control and access to all user data, system resources, and network capabilities. Once escalated to SYSTEM level, malicious actors can install persistent backdoors, modify system files, access encrypted data, and establish covert communication channels. The vulnerability's exploitation requires minimal privileges initially, making it particularly dangerous in environments where users have standard accounts. From an ATT&CK framework perspective, this vulnerability maps to T1068: Exploitation for Privilege Escalation and T1548.002: Abuse of Functionality, as it leverages legitimate system functionality to achieve unauthorized access. Organizations running affected systems face significant risk of data breaches, system compromise, and potential lateral movement within networks.
Mitigation strategies for this vulnerability require immediate patch deployment through Microsoft's regular security updates, as the primary fix involves correcting the privilege validation logic within the DWM core library. System administrators should implement the latest cumulative updates and security patches as soon as they become available. Additional protective measures include enabling Windows Defender Application Control policies to restrict unauthorized code execution, implementing strict user account control settings, and monitoring for unusual privilege escalation activities. Organizations should also consider implementing network segmentation to limit lateral movement capabilities and establish robust monitoring for suspicious DWM-related processes. The vulnerability demonstrates the critical importance of maintaining up-to-date system security patches and highlights the risks associated with privileged code execution in operating system components. Regular security assessments and vulnerability scanning should be conducted to identify and remediate similar issues across the enterprise infrastructure.