CVE-2025-24073 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 • 07/03/2025
The vulnerability identified as CVE-2025-24073 represents a critical security flaw within the Windows Desktop Window Manager DWM Core Library component that enables local privilege escalation for authorized attackers. This issue resides in the fundamental input validation mechanisms that govern how the DWM core library processes user-supplied data, creating an exploitable condition that can be leveraged by malicious actors who already possess legitimate system access. The Windows DWM Core Library serves as a critical component responsible for rendering desktop windows and managing graphical user interface elements, making it a prime target for privilege escalation attacks due to its elevated system privileges and deep integration with core operating system functions.
The technical root cause of this vulnerability stems from inadequate input validation procedures within the DWM Core Library's data processing pathways. When legitimate users submit graphical input or window management commands to the DWM subsystem, the library fails to properly validate the integrity and legitimacy of these inputs before processing them. This validation gap allows attackers to craft specially crafted inputs that bypass normal security checks, potentially triggering memory corruption or access control violations that can be exploited to gain elevated privileges. The flaw specifically manifests when the DWM component handles certain window management operations, where insufficient boundary checking and input sanitization creates opportunities for attackers to manipulate internal data structures and execute unauthorized code with higher privileges.
From an operational perspective, this vulnerability poses significant risks to enterprise environments where users may have legitimate access to systems but could potentially abuse their privileges through this vector. The local privilege escalation capability means that attackers who have already established a foothold on a system through other means can leverage this vulnerability to elevate their access level from standard user to administrator or system-level privileges. This escalation typically occurs without requiring additional authentication or exploitation of other vulnerabilities, making it particularly dangerous as it can be used to establish persistent access, exfiltrate sensitive data, or deploy additional malware. The impact extends beyond individual systems to potentially compromise entire network infrastructures when attackers use the elevated privileges to move laterally across connected systems.
Organizations should implement immediate mitigations including applying the latest security patches from Microsoft, which address the input validation deficiencies in the DWM Core Library. System administrators should also consider implementing additional security controls such as enabling Windows Defender Application Control or similar application whitelisting solutions to restrict unauthorized code execution. The vulnerability aligns with CWE-20, which describes "Improper Input Validation" as a fundamental weakness in software design that allows attackers to manipulate input data to cause unintended behavior. From an ATT&CK framework perspective, this vulnerability maps to privilege escalation techniques, specifically T1068 which covers "Exploitation for Privilege Escalation" and T1548.1 which addresses "Abuse Elevation Control Mechanism." Organizations should also enhance monitoring for suspicious process creation patterns and unusual privilege escalation events that could indicate exploitation attempts. Regular security assessments of the Windows DWM subsystem and comprehensive audit trails of user access patterns will help detect potential exploitation attempts and provide early warning of compromise.