CVE-2026-50367 in Windows
Summary
by MITRE • 07/14/2026
Incorrect access of indexable resource ('range error') in Windows Sensor Data Service allows an authorized attacker to elevate privileges locally.
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Analysis
by VulDB Data Team • 07/15/2026
The vulnerability described represents a critical privilege escalation flaw within the Windows Sensor Data Service component that operates at the kernel level. This issue manifests as an improper handling of indexable resources, specifically exhibiting characteristics of a range error that can be exploited by authenticated local users to gain elevated system privileges. The Windows Sensor Data Service functions as a core subsystem responsible for collecting and processing sensor data from various hardware components including temperature sensors, motion detectors, and other environmental monitoring devices. When the service processes indexed sensor data structures without proper bounds checking or validation, it creates an exploitable condition where malicious input can cause memory corruption or unexpected behavior within the kernel space.
The technical nature of this vulnerability aligns with CWE-129 which describes improper validation of array index values, and CWE-131 which covers incorrect calculation of buffer size. The range error occurs when the service attempts to access memory locations beyond the allocated buffer boundaries or when processing sensor data indices that exceed expected parameters. This flaw allows an attacker to manipulate the service's handling of sensor data structures through crafted input that causes the system to execute arbitrary code with kernel-level privileges. The attack vector requires local authentication since the vulnerability exists within a service that typically runs with elevated permissions, making it particularly dangerous for systems where users have legitimate access to the machine.
From an operational impact perspective, this vulnerability represents a significant threat to Windows enterprise environments where local user accounts might exist on systems running sensor data services. The privilege escalation capability means that any authenticated user could potentially gain SYSTEM level access, enabling them to bypass standard security controls, modify system files, install malicious software, or establish persistent backdoors. The exploitation process typically involves crafting specific sensor data inputs that trigger the range error condition, followed by leveraging the resulting memory corruption to execute shellcode or manipulate kernel structures. This vulnerability directly maps to ATT&CK technique T1068 which covers 'Exploitation for Privilege Escalation' and T1543 which covers 'Create or Modify System Process'.
Mitigation strategies should focus on immediate patch management, as Microsoft would have released a security update addressing this specific range error condition within the Sensor Data Service. Organizations should also implement restrictive access controls limiting local user privileges where possible, disable unnecessary sensor services if not required for operations, and monitor system logs for unusual activity patterns that might indicate exploitation attempts. Network segmentation and least privilege principles can help reduce the attack surface, while endpoint detection and response solutions should be configured to monitor for suspicious kernel-level activities or process injection techniques commonly associated with such privilege escalation exploits. System administrators should also consider implementing application whitelisting policies that restrict execution of unauthorized binaries in kernel contexts. The vulnerability demonstrates the importance of thorough input validation and bounds checking in kernel-mode drivers, emphasizing that even seemingly benign services can represent critical attack vectors when not properly secured against malformed input conditions.