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.comIn 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.
