CVE-2025-32857: SQL Injection Vulnerability in TeleControl Server Basic Leading to Potential System Compromise

Overview

In the landscape of cybersecurity, vulnerabilities in software applications pose a considerable risk to data integrity and system security. This blog post focuses on the CVE-2025-32857 vulnerability, which affects all versions of TeleControl Server Basic prior to V3.1.2.2. This vulnerability is particularly significant as it can allow an authenticated remote attacker to manipulate the application’s database and execute code with elevated permissions.
The impact of this vulnerability is far-reaching. It not only puts data at risk but also potentially compromises the entire system. It is therefore crucial for any organization using vulnerable versions of TeleControl Server Basic to understand this vulnerability and take the necessary steps to mitigate its impact.

Vulnerability Summary

CVE ID: CVE-2025-32857
Severity: High (CVSS: 8.8)
Attack Vector: Network
Privileges Required: Low
User Interaction: Required
Impact: Potential system compromise or data leakage

Affected Products

Product | Affected Versions

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

The vulnerability exists in the ‘UnlockBufferingSettings’ method used internally by the TeleControl Server Basic. This method is vulnerable to SQL injection, which is a code injection technique that attackers use to exploit vulnerabilities in a web application’s database layer.
An authenticated attacker can send specially crafted SQL commands which are then executed by the application’s database. This vulnerability allows the attacker to read from, write to the application’s database, and execute code with “NT AUTHORITY\NetworkService” permissions. To exploit this vulnerability, the attacker needs to access port 8000 on a system running a vulnerable version of the application.

Conceptual Example Code

Below is a hypothetical example of how an attacker might attempt to exploit this vulnerability:

POST /UnlockBufferingSettings HTTP/1.1
Host: target.example.com
Content-Type: application/json
{
"settings": "'; DROP TABLE users; --"
}

In this example, the attacker sends a payload that includes a SQL command (‘DROP TABLE users;’) that would delete the ‘users’ table from the database if executed.

Mitigation

To mitigate this vulnerability, users are advised to apply the vendor-provided patch, which updates the TeleControl Server Basic to version V3.1.2.2 or later where this vulnerability has been fixed. As an alternative temporary mitigation, users can also use a Web Application Firewall (WAF) or Intrusion Detection System (IDS) to detect and block attempts to exploit this vulnerability.