CVE-2025-31343: Critical SQL Injection Vulnerability in TeleControl Server Basic

Overview

CVE-2025-31343 is a critical vulnerability that affects all versions of TeleControl Server Basic prior to V3.1.2.2. This vulnerability provides an open door for authenticated remote attackers to exploit SQL injection. To fully comprehend the gravity of this issue, it’s essential to understand that SQL injection vulnerabilities can permit attackers to bypass authorization controls, manipulate databases, and even execute arbitrary code. In this particular case, the successful exploitation could lead to system compromise or potential data leakage, posing a serious risk to data integrity and confidentiality.

Vulnerability Summary

CVE ID: CVE-2025-31343
Severity: Critical (8.8 CVSS Score)
Attack Vector: Network
Privileges Required: Low
User Interaction: Required
Impact: System compromise, potential data leakage

Affected Products

Product | Affected Versions

TeleControl Server Basic | All versions < V3.1.2.2 How the Exploit Works

The vulnerability stems from an insecure implementation of the ‘UpdateTcmSettings’ method in TeleControl Server Basic. This method, which is used internally by the application, doesn’t adequately sanitize user-supplied input. An authenticated attacker can exploit this oversight by sending specially crafted input data to this method. This input, which could be a malicious SQL query, can manipulate the application’s database, bypass authorization controls, and even execute code with “NT AUTHORITY\NetworkService” permissions if the targeted system is vulnerable.

Conceptual Example Code

A conceptual example of the exploit might look something like this:

POST /UpdateTcmSettings HTTP/1.1
Host: target.example.com
Content-Type: application/json
Authorization: Bearer {token}
{ "settings_value": "'; DROP TABLE users; --" }

In this example, the `settings_value` parameter in the request body is carrying a payload that could potentially lead to a SQL injection attack. This is a classic example of a SQL payload (‘; DROP TABLE users; –) that, if successful, would cause the ‘users’ table in the database to be deleted.

Mitigation

To mitigate the vulnerability, users of TeleControl Server Basic are advised to promptly apply the latest patches and updates provided by the vendor. If the official patch is not immediately available or applicable, using a Web Application Firewall (WAF) or Intrusion Detection System (IDS) can serve as a temporary measure to prevent potential exploitation. Regularly updating and patching software is a crucial part of maintaining a secure environment and should be a part of any organization’s cybersecurity policy.