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CVE-2025-31635: Path Traversal Vulnerability in LambertGroup CLEVER

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Overview

This report covers CVE-2025-31635, a critical Path Traversal vulnerability discovered in LambertGroup’s CLEVER product. This flaw could potentially allow an attacker to bypass restrictions and access files or directories that they should not have access to. As a result, the integrity, confidentiality, and availability of the affected systems could be compromised, making this issue a significant concern for users of CLEVER.

Vulnerability Summary

CVE ID: CVE-2025-31635
Severity: High (7.5 CVSS Score)
Attack Vector: Network
Privileges Required: None
User Interaction: None
Impact: Potential system compromise or data leakage

Affected Products

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Product | Affected Versions

LambertGroup CLEVER | n/a – 2.6

How the Exploit Works

The Path Traversal vulnerability in LambertGroup’s CLEVER product allows an attacker to manipulate variables that reference files with ‘..’ sequences and its variations. Consequently, this can cause the application to access files or directories outside of the restricted directory, potentially leading to sensitive information exposure, system compromise, or data leakage.

Conceptual Example Code

Here is a conceptual example of a HTTP request that could exploit this vulnerability:

GET /file?filename=../../../etc/passwd HTTP/1.1
Host: vulnerable-clever.com

In this example, the attacker attempts to traverse the file system to the “/etc/passwd” file, which could reveal sensitive information about the system’s users.

Mitigation Guidance

Users of the affected versions of LambertGroup CLEVER are strongly advised to apply the vendor-supplied patch as soon as possible. As a temporary mitigation measure, users can make use of a Web Application Firewall (WAF) or Intrusion Detection System (IDS) to protect against potential exploitation of this vulnerability. However, these measures should not replace the need for patching and updating the software to a secure version.

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Disclaimer:

The information and code presented in this article are provided for educational and defensive cybersecurity purposes only. Any conceptual or pseudocode examples are simplified representations intended to raise awareness and promote secure development and system configuration practices.

Do not use this information to attempt unauthorized access or exploit vulnerabilities on systems that you do not own or have explicit permission to test.

Ameeba and its authors do not endorse or condone malicious behavior and are not responsible for misuse of the content. Always follow ethical hacking guidelines, responsible disclosure practices, and local laws.

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