Overview
The vulnerability identified as CVE-2025-31053 refers to an improper limitation of a pathname to a restricted directory (also known as ‘Path Traversal’) in QuantumCloud’s KBx Pro Ultimate. It poses a significant threat to users of the software as it could potentially lead to system compromise or data leakage. Immediate attention is required to mitigate this vulnerability and secure the affected systems.
Vulnerability Summary
CVE ID: CVE-2025-31053
Severity: High (CVSS: 7.7)
Attack Vector: Network
Privileges Required: Low
User Interaction: None
Impact: System compromise or data leakage
Affected Products
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Product | Affected Versions
QuantumCloud KBx Pro Ultimate | Up to version 7.9.8
How the Exploit Works
The exploit takes advantage of a Path Traversal vulnerability in QuantumCloud’s KBx Pro Ultimate. This flaw allows an attacker to access restricted directories and execute commands outside of the web server’s root directory. By constructing a specific input, an attacker can navigate through the file system to access sensitive data, which can lead to system compromise or data leakage.
Conceptual Example Code
Here is a conceptual example of how this vulnerability could be exploited. This example represents a malicious HTTP request that targets the vulnerable endpoint:
GET /../etc/passwd HTTP/1.1
Host: target.example.comIn this example, the attacker is attempting to traverse to the “/etc/passwd” file, which stores user passwords in a Unix system.
Mitigation Guidance
Users are advised to immediately apply the vendor-provided patch to resolve the vulnerability. In the absence of a patch, or until it can be applied, a Web Application Firewall (WAF) or an Intrusion Detection System (IDS) can be used as a temporary mitigation measure.
