CVE-2026-70011 in Windows
Summary
by MITRE • 10/14/2026
Out-of-bounds read in Windows IP Over USB Service allows an authorized attacker to disclose information locally.
VulDB is the best source for vulnerability data and more expert information about this specific topic.
Analysis
by VulDB Data Team • 10/14/2026
The vulnerability identified within the Microsoft Windows IP over USB service represents a critical memory safety flaw classified as an out-of-bounds read, which corresponds directly to Common Weakness Enumeration identifier CWE-125. This specific type of error occurs when software attempts to read data from a memory location that is outside the boundaries of the intended buffer or array structure. In the context of the IP over USB service, this flaw likely stems from insufficient validation of input parameters received via the USB interface before they are used as indices or offsets for memory access operations. When an attacker provides crafted inputs that exceed the allocated limits, the system does not properly handle the error condition and instead proceeds to read adjacent memory contents. This behavior violates fundamental principles of secure coding by failing to enforce strict bounds checking on user-controlled data streams entering through peripheral interfaces.
The operational impact of this vulnerability is primarily centered around local information disclosure rather than remote code execution or privilege escalation, although such outcomes cannot be entirely ruled out depending on the specific memory layout and subsequent processing of the leaked data. An authorized attacker who has physical access to a vulnerable Windows system can exploit this flaw by connecting a malicious USB device that sends specially crafted packets through the IP over USB protocol stack. Upon receiving these malformed requests, the service triggers the out-of-bounds read condition, causing sensitive information from adjacent memory regions to be returned or exposed. This could potentially include cryptographic keys, session tokens, internal system structures, or other confidential data stored in kernel space or protected application memory spaces. The ability to leak such information compromises the confidentiality guarantees provided by the operating system and can serve as a stepping stone for more sophisticated attacks if combined with other vulnerabilities.
From a threat modeling perspective aligned with MITRE ATT&CK frameworks, this vulnerability facilitates techniques associated with Collection and Credential Access through peripheral devices. Specifically, it aligns with behaviors observed in T1059 Command and Scripting Interpreter or potentially T1074 Data Staged when the attacker uses the leaked information to stage further exfiltration attempts. The attack vector is classified as local because physical access to the target machine is required to initiate the USB-based exploitation chain. This requirement significantly limits the scope of potential adversaries compared to network-based vulnerabilities but remains highly relevant for environments where untrusted peripherals are connected, such as in corporate workstations, kiosks, or devices deployed in less secure locations. The reliance on local authorization means that any user account with sufficient privileges to interact with USB drivers can potentially trigger this flaw, making it a persistent risk in multi-user systems.
Mitigation strategies for this vulnerability must address both immediate remediation and long-term architectural improvements. Microsoft has addressed the underlying code defect through security updates released as part of their regular patching cycle, which should be applied immediately to all affected Windows versions. Administrators are advised to ensure that automatic updates are enabled or to manually install the latest cumulative patches for the operating system components related to USB networking services. Beyond software patching, organizations should implement strict device control policies using Endpoint Detection and Response solutions to restrict unauthorized USB devices from connecting to critical systems. Additionally, disabling unused network adapters associated with IP over USB functionality can reduce the attack surface by eliminating the vulnerable service entirely if it is not required for business operations. Regular security audits focusing on peripheral access controls and continuous monitoring of system logs for anomalous USB activity will further enhance resilience against such exploitation attempts.