CVE-1999-0701 in Windows
Summary
by MITRE
After an unattended installation of Windows NT 4.0, an installation file could include sensitive information such as the local Administrator password.
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Analysis
by VulDB Data Team • 04/21/2026
The vulnerability described in CVE-1999-0701 represents a critical security flaw in the Windows NT 4.0 installation process that emerged during the era of widespread enterprise computing. This issue specifically affects systems undergoing unattended installations, which were commonly deployed in large organizations to streamline software deployment across multiple machines. The vulnerability stems from improper handling of installation files during the automated setup process, creating a scenario where sensitive authentication data becomes inadvertently exposed within the installation artifacts. This flaw directly impacts the security posture of organizations relying on automated deployment methods and highlights the importance of proper credential management during system provisioning.
The technical root cause of this vulnerability lies in the insufficient sanitization of installation configuration files that are generated during unattended Windows NT 4.0 installations. During the automated setup process, the system creates installation scripts and configuration files that contain administrative credentials and other sensitive information. These files are not properly secured or encrypted, allowing unauthorized access to critical system authentication data. The vulnerability manifests when these installation files are stored on systems or shared across networks without adequate access controls, creating a persistent security risk that can be exploited by malicious actors. This flaw aligns with CWE-312, which addresses the exposure of sensitive information through improper handling of credentials in configuration files.
The operational impact of this vulnerability extends far beyond simple information disclosure, as it fundamentally compromises the security of entire network infrastructures. Organizations utilizing unattended installation methods for Windows NT 4.0 systems faced the risk of credential theft that could lead to complete system compromise. Attackers could exploit this vulnerability to gain unauthorized administrative access to multiple systems, potentially escalating privileges and establishing persistent backdoors within corporate networks. The vulnerability also violates fundamental security principles outlined in the NIST Cybersecurity Framework, particularly in areas related to access control and information protection. Additionally, this issue demonstrates the importance of proper security hardening practices during system deployment, as highlighted in MITRE ATT&CK framework category T1078 for Valid Accounts and T1566 for Phishing.
Mitigation strategies for this vulnerability require immediate implementation of proper access controls and credential management practices. Organizations must ensure that installation files containing sensitive information are stored in secure locations with restricted access permissions and are properly deleted after successful installation completion. The implementation of secure configuration management processes should include mandatory credential sanitization procedures before any installation files are distributed or stored. System administrators should also implement network segmentation and monitoring to detect unauthorized access attempts to installation artifacts. This vulnerability underscores the necessity of comprehensive security awareness training and adherence to secure coding practices, particularly when developing automated deployment solutions. The remediation process should involve thorough review of all existing installation files and configuration scripts to identify and eliminate any remaining sensitive data, while establishing automated processes to prevent future occurrences of similar issues.