Zero-day vulnerability in CentreStack

Use of hard-coded cryptographic key
CVE-2025-30406

Vulnerability details

Advisory: SB2025040990 - Remote code execution in Gladinet CentreStack

Vulnerable component: CentreStack

CVE-ID: CVE-2025-30406

CVSSv3 score: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H/E:H/RL:O/RC:C

CWE-ID: CWE-321 - Use of Hard-coded Cryptographic Key

Description:

The vulnerability allows a remote attacker to compromise the affected system.

The vulnerability exists due to usage of a hard-coded cryptographic key when encrypting ViewState data. A remote non-authenticated attacker can predict the machineKey in use and forge ViewState payloads that pass integrity checks.

Successful exploitation of the vulnerability may allow an attacker to execute arbitrary code on the system with privileges of the Microsoft IIS webserver account. 

Note, the vulnerability is being actively exploited in the wild.

External links:

https://gladinetsupport.s3.us-east-1.amazonaws.com/gladinet/securityadvisory-cve-2005.pdf

About zero-day vulnerabilities

Zero-day vulnerability is an undisclosed vulnerability in software that hackers can exploit to compromise computer programs, gain unauthorized access to sensitive data, penetrate networks, etc. We consider vulnerability a zero-day when there is no solution provided from software vendor and the vulnerability is being actively exploited by malicious actors.

Zero-day candidate is a potential zero-day vulnerability in software which might have been used in targeted attacks, however there is no evidence to support this suggestion.