CVE-2025-29819 in Windows Admin Center
Summary
by MITRE • 04/08/2025
External control of file name or path in Azure Portal Windows Admin Center allows an unauthorized attacker to disclose information locally.
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Analysis
by VulDB Data Team • 05/24/2026
This vulnerability represents a critical security flaw in the Azure Portal Windows Admin Center that stems from insufficient input validation and sanitization of file path parameters. The issue manifests when the system fails to properly validate or sanitize user-supplied input that influences file naming or path resolution operations, creating an opportunity for attackers to manipulate file system access through external control mechanisms. The vulnerability falls under the category of path traversal and file name manipulation attacks, which are commonly classified as CWE-22 Path Traversal and CWE-73 Path Traversal. This weakness allows an attacker to access files or directories outside the intended scope of the application, potentially leading to unauthorized information disclosure and system compromise. The attack vector typically involves crafting malicious input that bypasses normal access controls and file system boundaries, enabling the attacker to navigate to arbitrary locations within the file system. When an unauthorized attacker exploits this vulnerability, they can potentially access sensitive system files, configuration data, or other locally stored information that should remain protected from external access. The operational impact extends beyond simple information disclosure, as the attacker may gain insights into system architecture, user credentials, or other sensitive data that could facilitate further attacks. This vulnerability is particularly concerning in cloud environments where administrative tools like Windows Admin Center provide direct access to underlying operating systems and services. The exploitation of this weakness aligns with several tactics described in the MITRE ATT&CK framework, specifically under T1083 File and Directory Discovery and T1074 Remote File Copy, where adversaries seek to enumerate and access files on compromised systems. Organizations using Azure Portal Windows Admin Center must implement strict input validation, sanitize all user-supplied data, and enforce proper access controls to prevent unauthorized file system access. The vulnerability underscores the importance of principle of least privilege and proper input validation in administrative interfaces, as these tools often serve as attack vectors due to their elevated privileges and direct system access capabilities. Mitigation strategies should include implementing robust parameter validation, using secure coding practices for file path handling, and deploying network segmentation to limit access to administrative tools. Regular security assessments and vulnerability scanning should be conducted to identify similar weaknesses in other administrative interfaces and system components. The risk associated with this vulnerability is heightened in environments where the Windows Admin Center is exposed to untrusted networks or where administrative access is not properly restricted through authentication and authorization controls.