Overview
A recently discovered security vulnerability has been identified in TeleControl Server Basic, affecting all versions prior to V3.1.2.2. This vulnerability, designated as CVE-2025-32840, exposes the application to SQL Injection attacks through the ‘LockGateway’ method. This vulnerability is particularly concerning as it could enable an authenticated remote attacker to bypass authorization controls, read and write to the application’s database, and execute code with “NT AUTHORITYNetworkService” permissions.
This vulnerability is a significant threat to organizations that use TeleControl Server Basic. If exploited successfully, this vulnerability could lead to a system compromise or data leakage. Considering the severity of the potential impact, immediate action is required to mitigate the risk.
Vulnerability Summary
CVE ID: CVE-2025-32840
Severity: High (CVSS: 8.8)
Attack Vector: Network
Privileges Required: Low (authenticated user)
User Interaction: None
Impact: System compromise, data leakage
Affected Products
No phone number, email, or personal info required.
Product | Affected Versions
TeleControl Server Basic | All versions < V3.1.2.2 How the Exploit Works
The vulnerability stems from insufficient sanitization of user-supplied data in the ‘LockGateway’ method. An attacker who has gained authenticated access to the application could inject malicious SQL queries. These queries could bypass authorization controls, manipulate the application’s database, and execute arbitrary code.
Conceptual Example Code
The following is a conceptual example of how an attacker might exploit this vulnerability. This example is for illustrative purposes only.
POST /LockGateway HTTP/1.1
Host: target.example.com
Content-Type: application/json
{ "gateway_id": "1; DROP TABLE users;" }In this example, the attacker sends a malicious payload that includes an SQL command (`DROP TABLE users;`) to delete the ‘users’ table from the database.
Mitigation Guidance
The vendor has released a patch for this vulnerability. All users of TeleControl Server Basic are strongly advised to update to version V3.1.2.2 or later as soon as possible. As a temporary measure, users can implement a Web Application Firewall (WAF) or Intrusion Detection System (IDS) to detect and block the malicious SQL queries.
Nevertheless, these are stop-gap measures, and the permanent fix is to apply the vendor patch. Ensuring your applications are up-to-date is the most effective way to protect your systems from vulnerabilities like CVE-2025-32840.