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Actively exploited

CVE-2025-30406 Gladinet CentreStack and Triofox Use of Hard-coded Cryptographic Key Vulnerability

Gladinet CentreStack and Triofox contains a use of hard-coded cryptographic key vulnerability in the way that the application manages keys used for ViewState integrity verification. Successful exploitation allows an attacker to forge ViewState payloads for server-side deserialization, allowing for remote code execution.

From the CISA KEV catalogue version 2026.11.06, with Cybergen analysis. Updated 6 Nov 2026.

Our Assessment

Should You Worry?

Patch nowCybergen assessment
  • CISA confirmed exploitation in the wild and added it to the Known Exploited Vulnerabilities catalogue on 8 Apr 2025.
  • Rated Critical severity (CVSS 9.0, scored by Vendor).
  • It has been in the catalogue for 577 days. Systems still unpatched now have almost certainly been scanned for it.
The Vulnerability

What It 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.

Affected Versions

ProductVersions
Gladinet CentreStackbefore 16.4.10315.56368

From the public CVE record, as supplied by the vendor. Always confirm against the vendor advisory.

From Watch to Action

What To Do Now

  1. 1

    Find it

    Search your asset inventory and external attack surface for Gladinet CentreStack. Include cloud images, appliances and anything a supplier runs for you.

    Attack Surface Management
  2. 2

    Fix it

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

    Vulnerability Management
  3. 3

    Hunt for compromise

    If an affected system was reachable before you patched, assume it may have been hit. Check logs, new accounts, web shells and outbound connections from the date of exposure.

    Incident Response
  4. 4

    Prove it is fixed

    Rescan or test the system after patching. Upgrades that fail silently and forgotten secondary instances are common.

    Penetration Testing

Vendor Advisories

Regulation

The Compliance Clock

Cyber EssentialsRated critical, so if it affects devices in your Cyber Essentials scope, the update must be installed within 14 days of the vendor releasing it.NIS2If exploitation causes a significant incident, essential and important entities owe their CSIRT an early warning within 24 hours and a notification within 72 hours.DORAFinancial entities must classify ICT incidents and send an initial notification for a major incident within strict deadlines, with exploited flaws a common cause.US federal (BOD 22-01)Federal civilian agencies had until 29 Apr 2025 to remediate. A sensible benchmark for everyone else.

General guidance, not legal advice. Your obligations depend on your sector, scope and jurisdiction.

Stay Ahead

More Exploited Gladinet Flaws

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CVE-2025-14611Gladinet CentreStack and Triofox Hard Coded Cryptographic VulnerabilityAdded 15 Dec 2025CVE-2025-12480Gladinet Triofox Improper Access Control VulnerabilityAdded 12 Nov 2025CVE-2025-11371Gladinet CentreStack and Triofox Files or Directories Accessible to External Parties VulnerabilityAdded 4 Nov 2025

All 4 exploited Gladinet vulnerabilities

Not Sure If You Are Exposed?

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Evidence

Sources

  1. CISA Known Exploited Vulnerabilities catalogue
  2. NVD: CVE-2025-30406
  3. CVE record: CVE-2025-30406
  4. FIRST EPSS
  5. gladinetsupport.s3.us-east-1.amazonaws.com/gladinet/securityadvisory-cve-2005.pdf
  6. gladinetsupport.s3.us-east-1.amazonaws.com/gladinet/securityadvisory-cve-2025-triofox.pdf
  7. centrestack.com/p/gce_latest_release.html