CVE-2026-69472 in Windows
Summary
by MITRE • 09/09/2026
Use after free in Windows Devices Human Interface allows an authorized attacker to elevate privileges locally.
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Analysis
by VulDB Data Team • 09/09/2026
The vulnerability described constitutes a critical use-after-free flaw within the Microsoft Windows operating system, specifically affecting components related to human interface devices such as keyboards, mice, and other peripheral input hardware. This class of memory corruption error occurs when software continues to use pointers after they have been freed or deallocated from memory. In this specific context, an attacker who has already gained local access to a vulnerable system can exploit the improper handling of these dangling pointers within the human interface device driver stack. The flaw allows for arbitrary code execution in the kernel mode, which is the most privileged level of operation on Windows systems where it runs with full control over hardware and software resources.
From a technical perspective, use-after-free vulnerabilities are particularly dangerous because they can often be leveraged to achieve complete system compromise through heap spraying techniques or by manipulating memory allocation patterns to overwrite critical data structures such as function pointers or exception handlers. When the operating system attempts to access the freed memory region for human interface device operations, it may execute attacker-controlled code instead of performing legitimate driver functions. This mechanism bypasses standard security boundaries because kernel-mode execution inherently trusts the caller and does not enforce user-level isolation protections that would typically prevent such escalation from a lower-privilege account.
The operational impact of this vulnerability is severe due to its potential for local privilege escalation. An authorized attacker, defined as any individual or process with valid credentials on the target machine but lacking administrative rights, can exploit this flaw to gain SYSTEM-level privileges. This effectively grants the attacker unrestricted access to all files, registry keys, and system configurations. The ability to execute code in kernel mode also allows for the installation of rootkits, persistence mechanisms that survive reboots, and the disabling of security software such as antivirus programs or endpoint detection and response tools. Consequently, this vulnerability transforms a standard user account into an administrative one without requiring any additional authentication steps beyond initial local access.
This flaw aligns with Common Weakness Enumeration (CWE) category CWE-416, which defines use after free errors where memory is freed but still referenced by the application or system. In terms of offensive security frameworks, this vulnerability facilitates techniques associated with MITRE ATT&CK tactic Tactic 0003 Persistence and specifically leverages methods related to privilege escalation such as exploiting kernel vulnerabilities (T1068) or abusing driver functionality for code execution. The exploitation path typically involves crafting malicious input that triggers the specific sequence of allocation, deallocation, and subsequent use within the human interface device subsystem, often requiring precise timing or memory state manipulation depending on the specific implementation details of the affected Windows version.
Mitigation strategies primarily involve applying vendor-supplied security patches as soon as they become available to address the underlying code defects in the driver stack. Organizations should prioritize patching systems that are exposed to untrusted local users or shared environments where privilege escalation risks are heightened. Additionally, implementing strict application control policies and restricting user privileges can reduce the attack surface by limiting who has access to execute arbitrary programs locally. Enabling advanced security features such as Kernel Patch Protection (PatchGuard) on supported architectures may also provide some mitigation against certain types of kernel exploitation attempts, although it is not a definitive solution for all use-after-free scenarios. Regular vulnerability scanning and monitoring for anomalous system behavior can help detect potential exploitation attempts before full compromise occurs.