CVE-2025-50168 in Windows
Summary
by MITRE • 08/12/2025
Access of resource using incompatible type ('type confusion') in Windows Win32K - ICOMP allows an authorized attacker to elevate privileges locally.
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Analysis
by VulDB Data Team • 11/22/2025
The vulnerability identified as CVE-2025-50168 represents a critical type confusion flaw within the Windows Win32K subsystem, specifically affecting the ICOMP component that handles user-mode graphics operations. This issue arises from improper type validation during resource handling operations, where the system fails to correctly distinguish between different data types when processing graphics-related objects. The vulnerability exists in the kernel-mode component of Windows that manages graphical user interface elements and is particularly concerning because it operates within the Win32K subsystem which is fundamental to Windows graphical operations. Type confusion vulnerabilities occur when a program incorrectly handles data types, leading to memory corruption that can be exploited to execute arbitrary code. The ICOMP functionality within Win32K is responsible for managing various graphics resources and their associated metadata, making it a prime target for privilege escalation attacks.
The technical exploitation of this vulnerability requires an authenticated local attacker who can manipulate graphics operations to trigger the type confusion scenario. The flaw manifests when the system processes certain graphics objects that contain malformed type information, causing the kernel to incorrectly interpret memory locations and execute unintended code paths. This type of vulnerability falls under CWE-415 which specifically addresses double free conditions and other memory-related issues that can occur when type validation is insufficient. The attacker must have local login access to the system and can leverage this weakness to escalate privileges from standard user level to system level access. The vulnerability's impact is amplified by the fact that Win32K operates with high privileges and is integral to the Windows graphical subsystem, making successful exploitation particularly damaging.
Operationally, this vulnerability presents a significant risk to Windows environments as it allows local privilege escalation without requiring network access or complex remote attack vectors. The attack surface is broad since any user who can log into a Windows system and interact with graphical operations could potentially exploit this weakness. Systems running Windows 10, Windows 11, and Windows Server versions that include the affected Win32K component are at risk. The vulnerability can be exploited through various graphical operations such as window management, graphics rendering, or any application that interacts with the Windows graphical subsystem. The attack chain typically involves crafting malicious graphics objects that trigger the type confusion, leading to code execution and subsequent privilege elevation. This makes the vulnerability particularly dangerous in enterprise environments where local access might be more readily available than in highly secured systems.
Mitigation strategies for CVE-2025-50168 should focus on immediate patch deployment from Microsoft, as the vulnerability requires a kernel-level fix to resolve the underlying type confusion issue. Organizations should implement the latest Windows security updates and ensure all systems are properly maintained with current patches. Additional defensive measures include restricting local user access where possible, implementing least privilege principles, and monitoring for unusual graphical operations that might indicate exploitation attempts. The ATT&CK framework categorizes this vulnerability under privilege escalation techniques, specifically T1068 which covers 'Exploitation for Privilege Escalation'. Security teams should also consider implementing application whitelisting policies and monitoring for suspicious Win32K activity patterns. Given the nature of the vulnerability, organizations should conduct thorough security assessments of their Windows environments and ensure that all user accounts have appropriate access controls to minimize potential exploitation risks. The vulnerability highlights the importance of proper type validation in kernel-mode components and the critical need for robust memory safety mechanisms in operating system subsystems.