CVE-2006-5406 in Defender
Summary
by MITRE
Passgo Defender 5.2 creates the application directory with insecure permissions (Everyone/Full Control), which allows local users to read and modify sensitive files. NOTE: the provenance of this information is unknown; the details are obtained from third party information.
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Analysis
by VulDB Data Team • 04/25/2026
The vulnerability identified as CVE-2006-5406 affects Passgo Defender 5.2, a security software solution that demonstrates a critical flaw in privilege management and access control implementation. This issue represents a fundamental failure in the software installation process where the application directory is created with overly permissive permissions that grant full control access to all users on the system. The vulnerability stems from the application's default configuration during installation, where the directory structure is established without proper security considerations, creating an inherent weakness that can be exploited by local adversaries.
The technical flaw manifests as an improper privilege management issue where the software fails to implement appropriate access control mechanisms during its installation phase. Specifically, the application directory is created with permissions set to Everyone/Full Control, which violates fundamental security principles of least privilege and mandatory access controls. This configuration allows any local user to perform read, write, and execute operations on sensitive files within the application directory, effectively providing unauthorized access to critical system components. The vulnerability is classified as a permission misconfiguration that enables privilege escalation through local file system access, aligning with CWE-276 which addresses improper file permissions and CWE-732 which covers inadequate permissions for critical resources.
The operational impact of this vulnerability is significant as it provides local users with the ability to manipulate sensitive files within the Passgo Defender application directory. Attackers could potentially modify core application files, inject malicious code, or extract confidential information from the software's configuration and data storage areas. This creates a persistent threat vector that could undermine the security posture of systems running the vulnerable software, as local users can essentially compromise the integrity of the security solution itself. The vulnerability affects the software's ability to maintain its intended security functions, potentially allowing attackers to bypass security controls or create backdoors within the system.
From a threat modeling perspective, this vulnerability aligns with ATT&CK technique T1068 which addresses local privilege escalation through insecure file permissions, and T1566 which covers social engineering attacks that exploit weak system configurations. The vulnerability creates an attack surface that can be leveraged for privilege escalation and persistence, as local users with basic access can exploit the insecure directory permissions to gain elevated privileges or maintain access to compromised systems. Organizations running Passgo Defender 5.2 are particularly vulnerable to this issue, as it represents a fundamental design flaw that cannot be mitigated through network-based security controls. The risk is compounded by the fact that this vulnerability exists at the file system level, making it difficult to detect and remediate without proper system administration practices.
The recommended mitigation strategies include immediate implementation of proper access control mechanisms during software installation, ensuring that application directories are created with restrictive permissions that limit access to authorized users only. System administrators should conduct thorough permission audits of existing installations and apply manual permission fixes to correct the insecure directory configurations. Additionally, organizations should consider implementing automated security scanning tools to detect and alert on similar permission misconfigurations across their infrastructure. The vulnerability highlights the importance of secure software development practices and proper access control implementation, emphasizing that security must be considered during all phases of the software lifecycle rather than as an afterthought. Regular security assessments and compliance monitoring should be implemented to prevent similar issues from occurring in other security software solutions within the organization's environment.