Overview
A new high-risk vulnerability, CVE-2025-32856, has been identified in TeleControl Server Basic, a widely used industrial control system. This vulnerability poses a significant risk to businesses using versions prior to V3.1.2.2. It can potentially allow an authenticated remote attacker to manipulate the application’s database, bypassing authorization controls, and even execute code. This can lead to severe consequences, such as system compromise or data leakage.
This vulnerability is especially concerning because of its high severity score (8.8), signifying that exploited systems could suffer significant impact. Companies using the affected versions of TeleControl Server Basic are strongly advised to patch their systems or apply mitigation strategies as soon as possible.
Vulnerability Summary
CVE ID: CVE-2025-32856
Severity: High, CVSS score of 8.8
Attack Vector: Network
Privileges Required: Low
User Interaction: None
Impact: Potentially complete system compromise, data leakage, and unauthorized code execution
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, CVE-2025-32856, results from an SQL injection flaw in the ‘LockBufferingSettings’ method used internally by the application. An attacker with network access to port 8000 can exploit this vulnerability by sending specially crafted SQL statements to manipulate the application’s database. This could allow the attacker to bypass authorization, read from and write to the database, and potentially execute arbitrary code with “NT AUTHORITYNetworkService” permissions.
Conceptual Example Code
Assuming the attacker knows the structure of the application’s database, a malicious SQL statement could be crafted as follows:
POST /LockBufferingSettings HTTP/1.1
Host: target.example.com
Content-Type: application/json
{
"settings": "'; DROP TABLE users; --"
}In this conceptual example, the attacker sends a request to the vulnerable endpoint, injecting a malicious SQL command to delete the ‘users’ table from the database. This is a simplified example; real-world attacks might be more complex and could potentially lead to full system compromise.
Mitigation
To mitigate this vulnerability, it is recommended to apply the latest patches provided by the TeleControl Server Basic vendor. If patching is not immediately possible, using a Web Application Firewall (WAF) or Intrusion Detection System (IDS) as a temporary measure can help protect against potential SQL injection attacks. Regularly monitoring system logs and network traffic can also aid in early detection of any unusual activity.