CVE-2026-102206 in Windows
Summary
by MITRE • 10/13/2026
Heap-based buffer overflow in Windows Portable Device MTP Driver allows an unauthorized attacker to elevate privileges with a physical attack.
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Analysis
by VulDB Data Team • 10/14/2026
The vulnerability identified as a heap-based buffer overflow within the Microsoft Portable Device Media Transfer Protocol (MTP) driver represents a critical security flaw that compromises the integrity of the operating system by allowing privilege escalation. This specific component, responsible for managing communication between Windows devices and external media transfer peripherals such as cameras, smartphones, or digital audio players, contains memory management errors in how it processes input data from connected hardware. When an attacker physically connects a maliciously crafted device to a victim's computer, the driver fails to properly validate the size of incoming buffers before copying data into allocated heap memory regions. This lack of boundary checking results in writing more data than the buffer can hold, causing adjacent memory structures to be overwritten with arbitrary values controlled by the attacker.
The technical mechanism behind this exploitation relies on the precise manipulation of heap metadata and function pointers within the Windows kernel space. By carefully crafting the payload sent through the MTP interface, an adversary can overwrite critical control flow data or introduce shellcode into executable regions of memory. Since the driver operates with high privileges in the SYSTEM context, successfully exploiting this overflow grants the attacker code execution at the highest level of access on the target machine. This effectively bypasses standard user-level security controls and allows for full system compromise without requiring any prior authentication or network-based attack vectors.
The operational impact of this vulnerability is severe due to its reliance on physical proximity rather than remote exploitation capabilities. While it does not allow an attacker to exploit the flaw over a network, it poses a significant risk in environments where devices are frequently connected to shared workstations, such as corporate offices, public libraries, or unsecured personal computers. An adversary with brief access to the target machine can plug in a malicious peripheral and execute arbitrary code instantly upon connection if auto-run features are enabled or if the user interacts with the device through File Explorer. This leads to complete loss of confidentiality, integrity, and availability for all data stored on the system, as well as potential persistence mechanisms that allow long-term unauthorized access even after the physical threat is removed.
Mitigation strategies must focus on both technical controls and procedural safeguards given the nature of this hardware-based attack vector. Administrators should ensure that Windows updates are applied promptly to install patches addressing this heap overflow issue within the portable device driver stack. Additionally, disabling auto-run features for removable media can prevent automatic execution of malicious payloads upon connection. Users should be educated on the risks of connecting unknown or untrusted devices to their systems and advised to use physical port locks or USB data blockers in high-security environments where sensitive information is processed. Monitoring system logs for unusual driver activity or unexpected privilege escalation events can also aid in detecting attempted exploitation attempts before full compromise occurs.
From a classification perspective, this vulnerability aligns with CWE-120, which denotes buffer copy without checking size limits, specifically manifesting as a heap-based overflow rather than stack-based corruption. In the context of attack tactics and techniques, it maps directly to ATT&CK technique T1059, Command and Scripting Interpreter, followed by T1068, Exploitation for Privilege Escalation. The physical access requirement places this within the broader category of hardware implant attacks or peripheral-based exploits, emphasizing that security perimeters must extend beyond network boundaries to include local device interaction protocols. Understanding these mappings helps organizations prioritize remediation efforts and implement appropriate detection rules based on known malicious behaviors associated with MTP driver exploitation.