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CVE-2025-27540

Siemens Telecontrol Server Basic SQL injection

9.8 CRITICALEPSS 1.02%
  1. Published16 Apr 2025

Description

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)

CVSS 3.1 breakdown

Attack vectorNetwork
Attack complexityLow
Privileges requiredNone
User interactionNone
ScopeUnchanged
ConfidentialityHigh
IntegrityHigh
AvailabilityHigh
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

Affected products

Siemens Telecontrol Server Basic< 3.1.2.2

Remediation

Fixed in
Siemens Telecontrol Server Basic≥ 3.1.2.2

References

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Frequently asked

Is CVE-2025-27540 being actively exploited?

CVE-2025-27540 is not in the CISA KEV catalog. Its EPSS exploit probability is 1.02%.

How severe is CVE-2025-27540?

CVE-2025-27540 has a CVSS 3.1 base score of 9.8, rated critical. EPSS estimates a 1.02% probability of exploitation.

Which products are affected by CVE-2025-27540?

Affected products include Siemens Telecontrol Server Basic.

How do I fix CVE-2025-27540?

Upgrade affected software to a fixed version, for example Siemens Telecontrol Server Basic 3.1.2.2 or later, then confirm no affected versions remain in your inventory.

How Secuno handles this

Secuno correlates vulnerabilities like CVE-2025-27540 against the real software inventory on every managed device, every day. Rather than a static severity, each match is scored in context: exploit availability, EPSS, the asset's exposure, and business criticality decide where it lands in the queue. If an affected version is present anywhere across your portfolio, it surfaces automatically with a prioritised remediation path.

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Data from the NVD, CISA KEV catalog and FIRST EPSS. CVSS 3.1 base score shown where available.