CVE-2025-53136 in Windows
Summary
by MITRE • 08/12/2025
Exposure of sensitive information to an unauthorized actor in Windows NT OS Kernel allows an authorized attacker to disclose information locally.
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Analysis
by VulDB Data Team • 05/09/2026
This vulnerability represents a critical information disclosure flaw within the Windows NT operating system kernel that enables authenticated attackers to access sensitive system data. The issue stems from improper access controls and privilege escalation mechanisms within the kernel components that handle system resources and security attributes. When an attacker successfully authenticates to the system, they can exploit this weakness to extract confidential information that should remain protected within the kernel space. The vulnerability specifically affects the kernel's handling of sensitive data structures and memory regions that contain system credentials, configuration details, and other privileged information.
The technical implementation of this flaw involves the kernel's failure to properly validate access permissions when processing requests for sensitive data. Attackers can leverage legitimate authentication mechanisms to manipulate kernel-level operations and bypass normal security boundaries that should prevent unauthorized data access. This typically occurs through improper handling of system calls or kernel API interactions where access control lists and privilege checks are either missing or inadequately enforced. The vulnerability may manifest through various kernel interfaces including registry access, memory management functions, or system service interactions that expose internal data structures to authenticated users.
The operational impact of this vulnerability extends beyond simple information disclosure, as the leaked data can provide attackers with comprehensive insights into the target system's configuration, security settings, and operational parameters. This information can be leveraged for further exploitation attempts including privilege escalation, lateral movement, and targeted attacks against other system components. The vulnerability essentially undermines the fundamental security model of the Windows NT kernel by allowing authenticated users to access data that should only be available to privileged system processes. Attackers can use the disclosed information to craft more sophisticated attacks, identify system weaknesses, and potentially escalate their privileges to full administrative access.
Mitigation strategies for this vulnerability should focus on implementing comprehensive access control measures and privilege separation within kernel components. System administrators should ensure that all kernel-level services and APIs properly validate access permissions and enforce strict security boundaries between different privilege levels. Regular security updates and patches from Microsoft should be applied immediately to address known vulnerabilities in kernel components. Network segmentation and least privilege principles should be enforced to limit the potential impact of successful exploitation. Additionally, monitoring and logging mechanisms should be enhanced to detect unusual access patterns or attempts to query sensitive kernel data structures. This vulnerability aligns with CWE-284 which addresses improper access control, and could be mapped to ATT&CK technique T1068 which involves privilege escalation through kernel exploits. Organizations should also consider implementing kernel-mode code integrity checks and runtime protection mechanisms to prevent unauthorized modifications to critical kernel components that could enable exploitation of similar vulnerabilities.