Siemens TeleControl Server Basic 3.1.2.1 Authenticate sql injection

Summaryinfo

A vulnerability was found in Siemens TeleControl Server Basic. It has been declared as critical. The impacted element is the function Authenticate. Executing a manipulation can lead to sql injection. This vulnerability is registered as CVE-2025-27540. It is possible to launch the attack remotely. No exploit is available. It is recommended to upgrade the affected component.

Detailsinfo

A vulnerability classified as critical was found in Siemens TeleControl Server Basic. This vulnerability affects the function Authenticate. The manipulation with an unknown input leads to a sql injection vulnerability. The CWE definition for the vulnerability is CWE-89. The product constructs all or part of an SQL command using externally-influenced input from an upstream component, but it does not neutralize or incorrectly neutralizes special elements that could modify the intended SQL command when it is sent to a downstream component. As an impact it is known to affect confidentiality, integrity, and availability. CVE summarizes:

A vulnerability has been identified in TeleControl Server Basic (All versions < V3.1.2.2). The affected application is vulnerable to SQL injection through the internally used 'Authenticate' method. This could allow an unauthenticated remote attacker to bypass authorization controls, to read from and write to the application's database and execute code with "NT AUTHORITY\NetworkService" permissions. A successful attack requires the attacker to be able to access port 8000 on a system where a vulnerable version of the affected application is executed on. (ZDI-CAN-25913)

The advisory is available at cert-portal.siemens.com. This vulnerability was named CVE-2025-27540 since 02/28/2025. The exploitation appears to be easy. The attack can be initiated remotely. No form of authentication is required for a successful exploitation. Technical details are known, but there is no available exploit. The structure of the vulnerability defines a possible price range of USD $0-$5k at the moment (estimation calculated on 08/29/2025). This vulnerability is assigned to T1505 by the MITRE ATT&CK project.

The vulnerability scanner Nessus provides a plugin with the ID 258073 (Siemens TeleControl Server Basic SQLi (CVE-2025-27540)), which helps to determine the existence of the flaw in a target environment.

Upgrading to version 3.1.2.2 eliminates this vulnerability.

The vulnerability is also documented in the vulnerability database at Tenable (258073). If you want to get best quality of vulnerability data, you may have to visit VulDB.

Productinfo

Vendor

• Siemens

Name

• TeleControl Server Basic

Version

• 3.1.2.1

License

• commercial

Website

• Vendor: https://www.siemens.com/

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CPE 2.2info

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Entryinfo

If you want to get best quality of vulnerability data, you may have to visit VulDB.

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