CVE-2025-31353: 
Telecontrol Server Basic vulnerability analysis and mitigation

A SQL injection vulnerability has been identified in TeleControl Server Basic (All versions < V3.1.2.2) through the internally used 'UpdateOpcSettings' method. The vulnerability was discovered on April 16, 2025, and affects the application's database interaction capabilities (Siemens Advisory, NVD).

The vulnerability exists in the 'UpdateOpcSettings' method and allows an authenticated remote attacker to bypass authorization controls. The vulnerability has been assigned a CVSS v3.1 base score of 8.8 (HIGH) with vector string CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H, and a CVSS v4.0 base score of 8.7 with vector string CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N. The vulnerability is classified as CWE-89: Improper Neutralization of Special Elements used in an SQL Command (Siemens Advisory).

A successful exploitation could allow attackers to read from and write to the application's database and execute code with 'NT AUTHORITY\NetworkService' permissions. The attack requires the attacker to be able to access port 8000 on a system where a vulnerable version of the affected application is executed (CISA).

Siemens has released version V3.1.2.2 which addresses this vulnerability. As a workaround, organizations are advised to restrict access to port 8000 on affected systems to trusted IP addresses only. Additionally, Siemens recommends configuring the environment according to their operational guidelines for Industrial Security (Siemens Advisory).