CVE-2025-32839: SQL Injection Vulnerability in TeleControl Server Basic

Overview

The world of cybersecurity is in constant flux with new vulnerabilities cropping up regularly. In this post, we will discuss a critical vulnerability, CVE-2025-32839, found in TeleControl Server Basic, which affects all versions earlier than V3.1.2.2. This vulnerability is a SQL Injection flaw that threatens the integrity, confidentiality, and availability of the affected systems. If exploited, it could grant unauthorized database access and control to an attacker, making it a significant concern for all organizations using the vulnerable software.

Vulnerability Summary

CVE ID: CVE-2025-32839
Severity: High (CVSS: 8.8)
Attack Vector: Network
Privileges Required: Low
User Interaction: None
Impact: Unauthorized access to application’s database, potential system compromise, and 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 ‘GetGateways’ method used internally by the TeleControl Server Basic application. An attacker can exploit this flaw by injecting malicious SQL queries into the system. These queries, when executed, can bypass authorization controls and give an attacker access to the application’s database. The attacker can then read from and write to the database and execute code with “NT AUTHORITYNetworkService” permissions, potentially leading to a system compromise.

Conceptual Example Code

Here is a conceptual example of how the vulnerability might be exploited. This is a sample HTTP POST request that an attacker might use to inject malicious SQL commands:

POST /GetGateways HTTP/1.1
Host: target.example.com
Content-Type: application/json
{ "gateway_id": "1; DROP TABLE users;" }

In this example, the attacker tries to drop the ‘users’ table from the database by appending a semicolon to the ‘gateway_id’ parameter, followed by the malicious SQL command.

Mitigation and Prevention

In light of this vulnerability, users of TeleControl Server Basic are recommended to update their software versions to V3.1.2.2 or later, where this vulnerability has been addressed. If updating is not immediately possible, using a Web Application Firewall (WAF) or Intrusion Detection System (IDS) can serve as a temporary mitigation measure. These systems can help detect and block SQL Injection attempts, thereby reducing the risk of exploit.