CVE-2026-50294 in Windows
Summary
by MITRE • 07/14/2026
Exposure of sensitive system information to an unauthorized control sphere in Windows Kernel allows an unauthorized attacker to disclose information locally.
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Analysis
by VulDB Data Team • 07/15/2026
This vulnerability represents a critical information disclosure flaw within the Windows kernel that enables local attackers to access sensitive system information through improper access controls. The issue stems from inadequate privilege validation mechanisms within kernel-level components that fail to properly restrict access to confidential data structures and system resources. Attackers exploiting this weakness can leverage local execution privileges to enumerate system internals, including memory addresses, kernel data structures, and potentially sensitive configuration parameters that should remain protected from unauthorized access.
The technical implementation of this vulnerability typically involves a lack of proper kernel-mode access control checks that allow unprivileged processes or user-mode applications to query or read kernel memory regions containing sensitive information. This misconfiguration creates an attack surface where malicious code running with standard user privileges can potentially extract system-level data through kernel interfaces that should be restricted to privileged operations. The flaw operates at the core of Windows operating system security architecture, specifically within kernel memory management and privilege enforcement subsystems.
From an operational perspective, this vulnerability poses significant risks to system integrity and confidentiality as it enables attackers to gather intelligence for more sophisticated attacks. The disclosed information can include kernel base addresses for exploit development, process memory layouts, driver information, and other system internals that would normally be protected from user-mode access. This reconnaissance capability significantly reduces the difficulty of subsequent exploitation attempts, potentially enabling privilege escalation or advanced persistent threat operations.
The vulnerability aligns with CWE-200, which categorizes improper information exposure in software systems, and corresponds to ATT&CK technique T1082 for system information discovery. Organizations may observe increased attack sophistication from adversaries who leverage such information disclosure to plan targeted exploitation campaigns. The impact extends beyond simple information gathering as this data can be used to bypass security mitigations like address space layout randomization and other kernel-level protections that rely on maintaining confidentiality of system internals.
Effective mitigation strategies include implementing proper kernel access control mechanisms, enforcing strict privilege validation for all kernel interfaces, and applying timely security updates from Microsoft. System administrators should monitor for unusual process activity that might indicate information enumeration attempts and consider deploying kernel-mode protection features like Driver Signature Enforcement and Windows Defender Application Control. Regular security assessments focusing on kernel-level access controls and memory protection mechanisms can help identify similar vulnerabilities before exploitation occurs.