CVE-2025-24058 in Windows
Summary
by MITRE • 04/08/2025
Improper input validation in Windows DWM Core Library allows an authorized attacker to elevate privileges locally.
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Analysis
by VulDB Data Team • 04/08/2025
The vulnerability resides within the Windows Desktop Window Manager core library which handles graphical compositing operations and window management functions across the operating system. This flaw represents a critical privilege escalation vector that enables authenticated local users to elevate their access rights from standard user level to system level execution. The underlying issue stems from inadequate input validation mechanisms within the DWM component that processes graphical data and window properties submitted by client applications.
The technical exploitation occurs through malformed input parameters or buffer manipulation techniques that bypass existing security checks in the DWM core library. Attackers can leverage this weakness by crafting specific graphical operations or window management commands that trigger memory corruption or access violations within the compositing engine. This vulnerability falls under the CWE-20 category for improper input validation, specifically manifesting as insufficient sanitization of user-supplied data during graphical rendering operations. The flaw allows attackers to manipulate internal memory structures and potentially execute arbitrary code with elevated privileges.
Operationally this vulnerability presents significant risk to enterprise environments where multiple users share systems or where local access is possible through legitimate means such as remote desktop connections, physical access, or compromised accounts. The impact extends beyond simple privilege escalation as it can enable attackers to bypass standard security controls including user access control lists, file system protections, and registry access restrictions. Once elevated to system level, attackers gain complete control over the affected system including ability to modify critical system files, install rootkits, establish persistence mechanisms, and access all user data.
Mitigation strategies should focus on immediate patch deployment from Microsoft as part of regular security maintenance procedures while implementing additional defensive measures such as restricting local account privileges, enabling application whitelisting policies, and monitoring for suspicious graphical operations. Organizations should also consider implementing the principle of least privilege for local accounts and ensuring that only necessary users have local login access to systems. The ATT&CK framework categorizes this vulnerability under privilege escalation techniques with specific relevance to T1068 for locally installed malicious software and T1548 for abuse of elevation control mechanisms. Regular security assessments should include verification of patched status and monitoring for exploitation attempts through behavioral analytics that detect anomalous graphical processing patterns consistent with this class of vulnerability.