CVE-2026-50456 in Windows
Summary
by MITRE • 07/14/2026
Exposure of sensitive information to an unauthorized actor in Windows File Explorer allows an authorized attacker to disclose information locally.
If you want to get best quality of vulnerability data, you may have to visit VulDB.
Analysis
by VulDB Data Team • 07/14/2026
This vulnerability represents a critical privilege escalation issue within the Windows operating system that enables local attackers to access sensitive information through Windows File Explorer. The flaw stems from improper access controls and information disclosure mechanisms within the file explorer component, allowing authenticated users with limited privileges to potentially retrieve confidential data that should be restricted to authorized personnel only. The vulnerability exists at the application level where File Explorer fails to properly enforce security boundaries when handling file system operations, creating an avenue for unauthorized information exposure.
The technical implementation of this flaw involves the manipulation of file system permissions and access control lists within Windows File Explorer's operational context. Attackers can exploit this by leveraging legitimate file browsing functions while simultaneously attempting to access protected directories or files that contain sensitive data such as configuration files, user credentials, system logs, or corporate documents. The vulnerability typically manifests when File Explorer processes file requests without adequately validating the security context of the requesting user, particularly in scenarios involving shared network drives, administrative directories, or files with restricted permissions. This weakness aligns with CWE-200, which specifically addresses the exposure of sensitive information to unauthorized actors.
From an operational impact perspective, this vulnerability can result in significant data breaches and information disclosure incidents that compromise enterprise security posture. Local attackers who have already established a foothold on a system can escalate their privileges and access confidential information that may include user authentication tokens, system configuration details, network credentials, or proprietary business data. The attack vector typically involves an attacker with standard user privileges leveraging the File Explorer functionality to navigate through restricted directories and potentially extract sensitive files. This represents a serious concern for organizations as it allows attackers to gather intelligence about the system architecture, user accounts, and potential targets for further exploitation.
Security professionals should implement multiple layers of defense including regular patch management to address the underlying vulnerability, enhanced access control policies, and monitoring of File Explorer usage patterns for suspicious activities. The mitigation strategies must align with established security frameworks such as those recommended by the MITRE ATT&CK framework where this vulnerability would be categorized under privilege escalation techniques. Organizations should enforce least privilege principles, regularly audit file system permissions, and implement comprehensive logging of file access operations to detect potential exploitation attempts. Additionally, network segmentation and endpoint detection and response solutions can help identify unauthorized information access patterns that may indicate exploitation of this vulnerability. The remediation process requires careful attention to ensure that File Explorer configurations properly enforce security boundaries while maintaining usability for legitimate business operations.