CVE-2026-102216 in Windows
Summary
by MITRE • 10/13/2026
Access of resource using incompatible type ('type confusion') in Windows StateRepository API allows an authorized attacker to elevate privileges locally.
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Analysis
by VulDB Data Team • 10/14/2026
The vulnerability described involves a critical logic error within the Microsoft Windows StateRepository application programming interface, specifically manifesting as a type confusion flaw that enables local privilege escalation. This defect arises from improper handling of data types during state management operations, where the system fails to correctly validate or cast input parameters before processing them. In complex software architectures like the Windows operating system, such discrepancies can lead to memory corruption or unexpected execution paths when an attacker crafts specific requests that exploit this mismatch between expected and actual data structures. The StateRepository API is responsible for managing application state settings across sessions and user contexts, making it a high-value target for attackers seeking deeper access to the underlying operating system components.
From a technical perspective, type confusion vulnerabilities occur when software assumes one data type but processes another, leading to undefined behavior that can be leveraged by malicious actors. In this specific instance, an authorized attacker who has already gained initial foothold on the system through legitimate credentials or other means of access can interact with the StateRepository API using incompatible types. This interaction allows the attacker to manipulate internal state variables in ways not intended by the developers, potentially bypassing security checks that rely on correct type enforcement. The exploitation of this flaw does not require remote code execution capabilities but rather local access and sufficient privileges to invoke the affected API functions, highlighting the importance of defense-in-depth strategies even for authenticated users.
The operational impact of successfully exploiting this vulnerability is significant, as it permits an attacker to elevate their privileges from a standard user account to that of an administrator or system-level entity. This escalation grants unrestricted control over the compromised machine, including the ability to install software, view, change, or delete sensitive data, and create new accounts with full administrative rights. Such capabilities effectively compromise the confidentiality, integrity, and availability of the entire system environment. Furthermore, once elevated privileges are obtained, attackers can persist within the network by establishing backdoors, disabling security monitoring tools, and moving laterally to other connected systems, thereby amplifying the initial breach into a widespread organizational incident.
To mitigate this risk, organizations should prioritize applying the latest cumulative updates provided by Microsoft that address these specific flaws in the StateRepository API. Regular patch management is essential for closing known vulnerabilities before they can be exploited in production environments. Additionally, implementing strict least-privilege principles ensures that even if an attacker gains initial access, their ability to interact with critical system APIs like StateRepository remains limited. Security teams should also monitor for anomalous behavior associated with privilege escalation attempts and employ endpoint detection and response solutions capable of identifying unusual API calls or memory manipulation patterns indicative of type confusion exploits. Aligning security controls with industry standards such as the Common Weakness Enumeration (CWE) category CWE-843, which covers access to resource using incompatible type, helps in systematically addressing these architectural weaknesses. Furthermore, mapping potential exploitation techniques to MITRE ATT&CK framework tactics related to privilege escalation and defense evasion provides a structured approach for detecting and preventing similar attacks across the enterprise infrastructure.