CVE-2025-29883 in File Station
Summary
by MITRE • 06/06/2025
An improper certificate validation vulnerability has been reported to affect File Station 5. If exploited, the vulnerability could allow remote attackers who have gained user access to compromise the security of the system.
We have already fixed the vulnerability in the following versions: File Station 5 5.5.6.4791 and later and later
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Analysis
by VulDB Data Team • 06/19/2025
The vulnerability identified as CVE-2025-29883 represents a critical improper certificate validation flaw within File Station 5 software that poses significant security risks to affected systems. This weakness specifically targets the certificate validation mechanisms that are essential for establishing secure communications between clients and servers. The vulnerability stems from insufficient verification processes that fail to properly validate digital certificates used in secure file transfer operations, creating potential attack vectors for malicious actors who have already established user-level access to the system.
From a technical perspective, this vulnerability falls under the category of improper certificate validation, which is commonly associated with CWE-295 - Improper Certificate Validation. The flaw allows attackers to potentially bypass certificate verification checks that are fundamental to maintaining the integrity and confidentiality of network communications. When an attacker gains user access to the system, they can exploit this weakness to manipulate certificate validation processes and potentially establish unauthorized secure connections or intercept sensitive data transfers. The vulnerability specifically affects the File Station 5 application's handling of SSL/TLS certificates during file operations, which could enable man-in-the-middle attacks or certificate spoofing scenarios.
The operational impact of this vulnerability extends beyond simple privilege escalation, as it fundamentally undermines the trust model that secure file transfer systems rely upon. Attackers who successfully exploit this weakness could potentially access sensitive files, modify data transfers, or establish persistent backdoor access points within the network infrastructure. The vulnerability's exploitation requires only user-level access, making it particularly dangerous as it can be leveraged by attackers who have already compromised user accounts through other means such as credential theft or phishing attacks. This characteristic aligns with ATT&CK technique T1078 - Valid Accounts, where adversaries use compromised legitimate credentials to gain access and then escalate privileges through application-level vulnerabilities.
Organizations using File Station 5 software must urgently implement the recommended remediation measures, as the vulnerability affects versions prior to 5.5.6.4791. The fix addresses the certificate validation logic by implementing proper certificate chain verification, ensuring that all intermediate certificates are validated against trusted root authorities and that certificate expiration dates are properly checked. Security teams should conduct immediate assessments of their File Station 5 deployments to identify systems running vulnerable versions and implement the necessary updates. Additionally, network monitoring should be enhanced to detect potential exploitation attempts, particularly around certificate validation failures or unusual SSL/TLS handshake behaviors that might indicate attempted certificate manipulation attacks. The remediation process should also include comprehensive testing to ensure that the updated certificate validation mechanisms function correctly without disrupting legitimate file transfer operations.