CVE-2026-29522 in Test Data Management
Summary
by MITRE • 03/16/2026
ZwickRoell Test Data Management versions prior to 3.0.8 contain a local file inclusion (LFI) vulnerability in the /server/node_upgrade_srv.js endpoint. An unauthenticated attacker can supply directory traversal sequences via the firmware parameter to access arbitrary files on the server, leading to information disclosure of sensitive system files.
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Analysis
by VulDB Data Team • 03/22/2026
The vulnerability identified as CVE-2026-29522 affects ZwickRoell Test Data Management software versions prior to 3.0.8 and represents a critical local file inclusion flaw within the /server/node_upgrade_srv.js endpoint. This security weakness stems from inadequate input validation mechanisms that fail to properly sanitize user-supplied parameters, specifically the firmware parameter which accepts directory traversal sequences. The vulnerability exists in the server-side processing logic where the application directly incorporates user-provided input into file system operations without sufficient sanitization or authorization checks. Attackers can exploit this flaw by crafting malicious requests containing traversal sequences such as ../ or ..\ that manipulate the file path resolution mechanism to access files outside the intended directory structure. The vulnerability is classified as a local file inclusion issue under CWE-22 which specifically addresses improper limitation of a pathname to a restricted directory, commonly known as path traversal attacks. This weakness allows attackers to bypass normal access controls and retrieve sensitive system information.
The operational impact of this vulnerability extends beyond simple information disclosure to potentially enable more sophisticated attacks within the compromised system. An unauthenticated attacker can leverage this flaw to access critical system files including configuration data, credential storage locations, system logs, and potentially database files that contain sensitive operational information. The lack of authentication requirements for exploitation makes this vulnerability particularly dangerous as it can be triggered by anyone with network access to the affected service. The vulnerability's presence in the node_upgrade_srv.js endpoint suggests that the application may be handling firmware update requests in a manner that does not properly validate file paths, creating an attack surface where legitimate update functionality becomes a vector for unauthorized file access. This type of vulnerability aligns with ATT&CK technique T1083 which describes discovering file and directory permissions, and T1566 which covers credential access through exploitation of software vulnerabilities. The potential for information disclosure through this LFI vulnerability could provide attackers with sufficient data to plan further attacks against the system or its network infrastructure.
Mitigation strategies for this vulnerability should focus on immediate patching of affected systems to version 3.0.8 or later where the LFI flaw has been addressed through proper input validation and parameter sanitization. Organizations should implement network segmentation to limit access to the vulnerable endpoint to only authorized administrative systems and personnel. Additional protective measures include implementing proper input validation at the application level to reject or sanitize any path traversal sequences before they are processed, utilizing whitelisting approaches for file access operations, and conducting regular security assessments of web application endpoints. System administrators should also monitor for unusual file access patterns and implement intrusion detection systems to identify potential exploitation attempts. The vulnerability demonstrates the importance of proper secure coding practices and input validation as outlined in OWASP Top 10 and NIST cybersecurity guidelines, particularly in preventing path traversal attacks that have been consistently ranked among the most critical web application security risks. Organizations should also consider implementing application firewalls or web application firewalls that can detect and block malicious path traversal attempts before they reach the vulnerable application components.