CVE-2025-68391 in BDF
Summary
by MITRE • 10/30/2026
ARKETEAM Protectel modules PROTECTELMAJ and BDF are vulnerable to arbitrary file upload. Any user is able to upload arbitrary file and override existing files in a temporary folder. This vulnerability might lead to execution of embedded JavaScript scripts when an authenticated user tries to download the uploaded file. This issue has been fixed in: PROTECTELMAJ v6.5.19 and BDF v6.4.67
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Analysis
by VulDB Data Team • 10/30/2026
The ARKETEAM Protectel modules, specifically PROTECTELMAJ version 6.5.18 and earlier and BDF version 6.4.66 and earlier, contain a critical security flaw related to file handling mechanisms that allows for arbitrary file uploads. This vulnerability stems from insufficient validation of user-supplied input during the upload process, enabling any authenticated or potentially unauthenticated user depending on specific module configurations to bypass intended restrictions. The core technical failure lies in the application's inability to properly sanitize filenames and verify file types before storing them within a temporary directory structure. By exploiting this weakness, an attacker can inject malicious files into the system, effectively overriding existing legitimate files located in these transient storage areas. This lack of strict input validation represents a significant deviation from secure coding practices required for web applications handling user uploads.
The operational impact of this vulnerability is severe due to its potential to lead to remote code execution through client-side interactions. While the initial upload places malicious content into a temporary folder, the risk escalates when an authenticated user attempts to download or interact with these files. If the uploaded file contains embedded JavaScript scripts and is served with appropriate MIME types that trigger browser interpretation, it can result in Cross-Site Scripting attacks against other users who access the compromised resources. This scenario allows attackers to steal session cookies, hijack administrative sessions, deface web interfaces, or redirect victims to phishing sites. The ability to override existing files further complicates remediation efforts as legitimate system functions may be disrupted by malicious replacements, leading to denial of service conditions alongside confidentiality and integrity breaches.
From a classification perspective, this vulnerability aligns with CWE-434, which describes the unrestricted upload of file types that can lead to remote code execution or other harmful behaviors. Additionally, it relates closely to CWE-59, involving improper link resolution before use, as the system fails to validate the destination path and content integrity prior to storage. In terms of adversary tactics, this exploit maps to MITRE ATT&CK technique T1505.003, specifically Server Software Component: Web Shell, where attackers upload malicious scripts to gain persistent access or execute commands. The attack vector also touches upon T1059.007 for JavaScript execution if the payload is successfully rendered in a browser context by victims accessing the uploaded content.
Mitigation strategies must prioritize immediate patching of all affected instances to versions PROTECTELMAJ v6.5.19 and BDF v6.4.67 or later, where these input validation checks have been corrected. In environments where upgrading is not immediately feasible, administrators should implement strict file type whitelisting on the server side rather than relying solely on client-side restrictions. It is essential to enforce randomization of uploaded filenames to prevent predictable path traversal and ensure that temporary directories are configured with permissions that restrict execution capabilities for script files. Furthermore, setting appropriate Content-Disposition headers when serving downloaded files can help browsers treat uploads as attachments rather than executable content, thereby mitigating the risk of client-side code injection. Regular security audits focusing on file upload handlers and continuous monitoring of web server logs for anomalous upload patterns are recommended to detect potential exploitation attempts early in the attack lifecycle.