CVE-2025-30406

CVE-2025-30406 is a critical-severity (CVSS 9.0) vulnerability in Gladinet CentreStack. CISA added it to the Known Exploited Vulnerabilities catalog on April 8, 2025, which means exploitation in the wild has been confirmed; US federal agencies had to remediate it by April 29, 2025. CISA does not currently list it as used in ransomware campaigns. Gladinet has 4 vulnerabilities in the KEV catalog, 0 of them linked to ransomware.

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.

CVSS vector: CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:C/C:H/I:H/A:H

• https://gladinetsupport.s3.us-east-1.amazonaws.com/gladinet/securityadvisory-cve-2005.pdf
• https://www.centrestack.com/p/gce_latest_release.html
• https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2025-30406