CVE-2025-24044 in Windows
Summary
by MITRE • 03/11/2025
Use after free in Windows Win32 Kernel Subsystem allows an authorized attacker to elevate privileges locally.
If you want to get the best quality for vulnerability data then you always have to consider VulDB.
Analysis
by VulDB Data Team • 07/07/2025
The vulnerability identified as CVE-2025-24044 represents a critical use-after-free condition within the Windows Win32 Kernel Subsystem that enables local privilege escalation for authenticated attackers. This flaw resides in the kernel-mode components responsible for managing user-mode application interfaces and system call processing, creating a pathway for malicious actors to exploit kernel memory management inconsistencies. The vulnerability manifests when the system fails to properly validate memory references after objects have been freed, allowing for potential code execution or privilege elevation within the kernel context. The affected subsystem handles critical operations related to process management, memory allocation, and inter-process communication, making it a prime target for attackers seeking to escalate their privileges from standard user level to system level access.
The technical implementation of this vulnerability stems from improper handling of reference counting and memory deallocation within the kernel's object management framework. When certain Win32 API calls are processed, the kernel subsystem allocates memory structures to manage application state and resource tracking. However, race conditions or inadequate validation mechanisms can cause these structures to be freed while still referenced by other kernel components or user-mode processes. This creates a window where malicious code can manipulate the freed memory location to either redirect execution flow or inject malicious code that executes with kernel privileges. The vulnerability's exploitation requires an authenticated user account with standard privileges, as the attack vector operates within the legitimate kernel subsystem interfaces rather than requiring direct physical access or remote network connectivity.
From an operational impact perspective, this vulnerability presents a significant risk to enterprise environments where multiple users maintain standard accounts on Windows systems. The local privilege escalation capability allows attackers to gain SYSTEM-level access without requiring additional attack vectors or complex exploitation chains. Once elevated, compromised systems can be used to establish persistent access, exfiltrate sensitive data, deploy additional malware, or serve as launch points for further network infiltration. The vulnerability affects multiple Windows versions including windows 10, windows 11, and server operating systems, making it particularly concerning for organizations with diverse endpoint environments. Security teams must consider this vulnerability as a high-priority threat requiring immediate attention and remediation.
Mitigation strategies for CVE-2025-24044 should prioritize immediate patch deployment from Microsoft's security updates, as the vulnerability requires kernel-level fixes to address the underlying memory management flaws. Organizations should implement additional controls including user access restriction policies, application whitelisting, and enhanced monitoring of kernel-mode activities. The use of exploit prevention technologies such as control flow integrity and address space layout randomization can help reduce the effectiveness of exploitation attempts. Security teams should also consider implementing privileged access management controls to limit the number of accounts with local administrative privileges and establish robust incident response procedures for detecting potential exploitation attempts. This vulnerability aligns with CWE-416 which addresses use-after-free errors, and represents a technique that could be categorized under ATT&CK tactic TA0004 privilege escalation through kernel exploits. The remediation process should include comprehensive testing of patches in controlled environments before widespread deployment to ensure system stability and prevent potential service disruptions.