CVE-2025-32841: Critical SQL Injection Vulnerability in TeleControl Server Basic

Overview

A critical vulnerability has been identified in all versions of TeleControl Server Basic prior to V3.1.2.2. This vulnerability is particularly dangerous as it allows an authenticated remote attacker to execute SQL injection attacks, thereby bypassing authorization controls, altering the application’s database, and executing code with significant permissions. Given the widespread use of TeleControl Server Basic in various sectors, this vulnerability could potentially affect a large number of systems, leading to system compromise and data leakage if not addressed promptly.

Vulnerability Summary

CVE ID: CVE-2025-32841
Severity: Critical (CVSS 8.8)
Attack Vector: Network
Privileges Required: Low
User Interaction: Required
Impact: 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 exploit works by an attacker sending specifically crafted SQL commands to the ‘UnlockGateway’ method of the TeleControl Server Basic. Since the application does not adequately sanitize the user-supplied input, this can result in SQL injection. This would allow an attacker with network access to the application to access sensitive information, manipulate the application database, and execute code with “NT AUTHORITYNetworkService” permissions.

Conceptual Example Code

Here is a conceptual example of how the vulnerability might be exploited. This would involve sending a malicious SQL command to the ‘UnlockGateway’ method through a POST request.

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

In this example, the SQL command `DROP TABLE users;` would be executed on the server, potentially deleting a table from the database. Note that this is a simplified example, and actual SQL injection attacks can be much more complex and damaging.

Mitigation and Remediation

Users are advised to immediately apply the patch provided by the vendor that addresses this vulnerability. In cases where immediate patching is not feasible, temporary mitigation can be achieved by using a Web Application Firewall (WAF) or an Intrusion Detection System (IDS) to block or detect SQL injection attacks. However, these measures only provide temporary relief and cannot fully resolve the vulnerability. Therefore, upgrading to a patched version of the software should be done as soon as possible.