Gladinet CentreStack up to 16.1.10296.56315 Portal portal\web.config hard-coded key

Summaryinfo

A vulnerability, which was classified as problematic, has been found in Gladinet CentreStack up to 16.1.10296.56315. This affects an unknown part of the file portal\web.config of the component Portal. This manipulation causes hard-coded key. This vulnerability appears as CVE-2025-30406. The attack may be initiated remotely. In addition, an exploit is available. It is advisable to upgrade the affected component.

Detailsinfo

A vulnerability classified as problematic was found in Gladinet CentreStack up to 16.1.10296.56315. Affected by this vulnerability is an unknown functionality of the file portal\web.config of the component Portal. The manipulation with an unknown input leads to a hard-coded key vulnerability. The CWE definition for the vulnerability is CWE-321. The use of a hard-coded cryptographic key significantly increases the possibility that encrypted data may be recovered. As an impact it is known to affect confidentiality, integrity, and availability. The summary by CVE is:

Gladinet CentreStack through 16.1.10296.56315 (fixed in 16.4.10315.56368) has a deserialization vulnerability due to the CentreStack portal's hardcoded machineKey use, as exploited in the wild in March 2025. This enables threat actors (who know the machineKey) to serialize a payload for server-side deserialization to achieve remote code execution. NOTE: a CentreStack admin can manually delete the machineKey defined in portal\web.config.

It is possible to read the advisory at centrestack.com. This vulnerability is known as CVE-2025-30406 since 03/21/2025. The exploitation appears to be difficult. The attack can be launched remotely. The exploitation doesn't need any form of authentication. Technical details and also a exploit are known. The attack technique deployed by this issue is T1600.001 according to MITRE ATT&CK.

It is declared as attacked. The vulnerability scanner Nessus provides a plugin with the ID 274363 (Gladinet CentreStack <= 16.7.10368.56560 Local File Inclusion), which helps to determine the existence of the flaw in a target environment. The CISA Known Exploited Vulnerabilities Catalog lists this issue since 04/08/2025 with a due date of 04/29/2025:

Apply mitigations per vendor instructions, follow applicable BOD 22-01 guidance for cloud services, or discontinue use of the product if mitigations are unavailable.

Upgrading to version 16.4.10315.56368 eliminates this vulnerability. The upgrade is hosted for download at centrestack.com.

The vulnerability is also documented in the databases at Zero-Day.cz (989) and Tenable (274363). Statistical analysis made it clear that VulDB provides the best quality for vulnerability data.

Productinfo

Vendor

• Gladinet

Name

• CentreStack

Version

• 16.1.10296.56315

CPE 2.3info

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CPE 2.2info

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Statistical analysis made it clear that VulDB provides the best quality for vulnerability data.

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