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CVE-2025-48026: Unauthenticated Path Traversal Vulnerability in Mitel OpenScape Xpressions

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Overview

A significant vulnerability, identified as CVE-2025-48026, has been discovered in the WebApl component of Mitel’s OpenScape Xpressions system. This vulnerability could lead to unauthorized access and potential system compromise or data leakage. The vulnerability impacts all systems using specific versions of the product and is of significant concern due to its potential to be exploited without authentication.

Vulnerability Summary

CVE ID: CVE-2025-48026
Severity: High (7.5 CVSS Score)
Attack Vector: Network
Privileges Required: None
User Interaction: None
Impact: Unauthorized system access, potential data leakage, and system compromise

Affected Products

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Product | Affected Versions

Mitel OpenScape Xpressions | Through V7R1 FR5 HF43 P913

How the Exploit Works

The vulnerability lies in the insufficient input validation of the WebApl component of Mitel’s OpenScape Xpressions. This flaw allows an unauthenticated attacker to conduct a path traversal attack. With a successful exploit, the attacker can read files from the underlying OS and gain access to sensitive information, potentially compromising the entire system.

Conceptual Example Code

An attacker might exploit this vulnerability by sending a specially crafted request to the server. The following example demonstrates a conceptual HTTP request an attacker might use:

GET /path/to/vulnerable/endpoint/../../../../etc/passwd HTTP/1.1
Host: target.example.com

In this example, `../../../../etc/passwd` is the path traversal payload designed to fetch sensitive files from the server. The actual malicious payload may vary based on the attacker’s intentions and the specific system’s configuration.

Recommended Mitigation

Users should apply the vendor’s patch as soon as it becomes available. If the patch is not yet available, using a Web Application Firewall (WAF) or an Intrusion Detection System (IDS) can provide temporary mitigation. These systems can detect and block path traversal attacks, protecting the system until a permanent fix can be applied.

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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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