CVE-2025-53151 in Windows
Summary
by MITRE • 08/12/2025
Use after free in Windows Kernel 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-2025-53151 represents a critical use after free condition within the Windows kernel that enables authenticated local attackers to achieve privilege escalation. This flaw exists in the kernel-mode components responsible for memory management and resource handling, creating a scenario where freed memory objects can still be accessed and manipulated by malicious code. The vulnerability stems from improper handling of kernel memory allocations where objects are deallocated but references to them persist, allowing for potential exploitation through crafted kernel operations.
The technical implementation of this use after free vulnerability occurs when the Windows kernel fails to properly invalidate object references after memory deallocation. This condition typically arises in scenarios involving kernel data structures, object managers, or resource cleanup routines where the system does not adequately track or clear references to freed memory regions. Attackers can leverage this by allocating controlled data structures that overlap with previously freed kernel memory, potentially allowing them to overwrite critical kernel data or execute arbitrary code with kernel-level privileges.
From an operational perspective, this vulnerability presents a significant threat to system security as it requires only local authentication to exploit, making it particularly dangerous in environments where users have legitimate access to systems. The privilege escalation achieved through this vulnerability enables attackers to gain kernel-level access, which provides complete control over the affected system. This includes the ability to bypass security controls, modify system files, install malware, and access sensitive data without detection. The impact extends beyond individual system compromise to potentially enable lateral movement within networks where privileged accounts are present.
The exploitation of this vulnerability aligns with several attack patterns documented in the MITRE ATT&CK framework, particularly those related to privilege escalation and kernel-mode exploitation. The technique leverages the principle of memory corruption to achieve elevation of privileges, which maps to ATT&CK tactic T1068. The vulnerability also demonstrates characteristics consistent with CWE-416, which describes the use after free condition, and CWE-787, which covers out-of-bounds write conditions. Organizations should prioritize immediate patching of affected systems, implement monitoring for suspicious kernel-level activities, and maintain robust endpoint detection and response capabilities to identify potential exploitation attempts.
Mitigation strategies should include immediate deployment of vendor security patches, implementation of kernel-mode protection mechanisms such as exploit protection policies, and enhanced monitoring of kernel-level system calls and memory operations. System administrators should also consider implementing least privilege principles and regular security audits to reduce the attack surface. The vulnerability underscores the importance of maintaining up-to-date security patches and conducting regular vulnerability assessments of kernel components. Organizations should also implement network segmentation and access controls to limit potential lateral movement if exploitation occurs. Regular security training for administrators and developers regarding kernel security principles remains essential in preventing exploitation of similar vulnerabilities in the future.