How severe is CVE-2025-30406?

CVE-2025-30406 has a CVSS score of 9/10, rated CRITICAL. Immediate patching is strongly recommended.

Which packages are affected by CVE-2025-30406?

Affected package information for CVE-2025-30406 is not yet fully mapped. Check the official advisory links for details.

How do I fix CVE-2025-30406?

No fixed version has been published for CVE-2025-30406 yet. Monitor the advisory for updates, apply mitigations recommended by the vendor, and use O3 Security to track when a fix becomes available in your stack.

Is CVE-2025-30406 actively exploited in the wild?

Yes. There are 2 known exploit references for CVE-2025-30406, including . All exploit code should only be run in an isolated sandbox environment for research or authorized testing — never against production systems without explicit written authorization.

What is the EPSS score for CVE-2025-30406?

CVE-2025-30406 has an EPSS (Exploit Prediction Scoring System) score of 85.4%, placing it in the 99th percentile of all CVEs. EPSS is maintained by FIRST.org and estimates the probability that a vulnerability will be exploited in the wild within the next 30 days. A score above 50% indicates significantly elevated exploitation risk — immediate patching is strongly recommended.

Is CVE-2025-30406 in the CISA Known Exploited Vulnerabilities catalog?

Yes. CVE-2025-30406 (Gladinet CentreStack and Triofox Use of Hard-coded Cryptographic Key Vulnerability) was added to CISA's Known Exploited Vulnerabilities (KEV) catalog on 2025-04-08. CISA required all US federal civilian agencies to remediate this vulnerability by 2025-04-29. The required action was: Apply mitigations per vendor instructions, follow applicable BOD 22-01 guidance for cloud services, or discontinue use of the product if mitigations are unavailable. Being listed in the KEV catalog is the strongest possible confirmation of active exploitation — treat this as a critical priority.

What type of vulnerability is CVE-2025-30406?

CVE-2025-30406 is classified as CWE-321 (CWE-321), Hard-coded Credentials (CWE-798). These weakness types describe the underlying flaw category, which helps determine the potential impact and the right class of mitigation.

Which products and versions are affected by CVE-2025-30406?

CVE-2025-30406 affects gladinet centrestack. Check the affected-products list on this page against your deployed version to confirm exposure.

Is there exploit tooling available for CVE-2025-30406?

A Nuclei detection template exists for CVE-2025-30406, meaning automated scanners can fingerprint it. Public exploit tooling significantly increases real-world risk — prioritize patching and ensure detection coverage. Exploit tooling should only ever be used in isolated, authorized testing environments.

When was CVE-2025-30406 published, and has it been updated?

CVE-2025-30406 was published on April 3, 2025 and was last updated on November 5, 2025. Advisory data evolves as severity scores, affected ranges, and exploit intelligence are revised — always check the latest version of the advisory before acting.

CISA KEV·Added 2025-04-08 — agencies required to remediate by 2025-04-29

CVE-2025-30406

CRITICAL

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…

Published

Apr 3, 2025

Updated

Nov 5, 2025

Affected

0 pkgs

Patched

None yet

Exploits

2 known

EPSS Exploitation Probability

via FIRST.org ↗

85.4%probability of exploitation in next 30 days

Very High Risk99th percentile0.00%

EPSS (Exploit Prediction Scoring System) is a daily probability model maintained by FIRST.org. It estimates the likelihood a CVE will be exploited in production environments within the next 30 days, derived from real-world threat intelligence signals.

Description

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 Products

1 product · 1 configurations

Application

centrestackgladinet

< 16.4.10315.56368

range

Exploits & PoCs

Research use only. For defensive security, authorized penetration testing, and academic research only. Never execute exploit code against systems without explicit written authorization.

mchklt/CVE-2025-30406

CVE-2025-30406 ViewState Exploit PoC

⭐ 90🍴 17Mar 2026

W01fh4cker/CVE-2025-30406

Exploit for CVE-2025-30406

⭐ 12🍴 4Dec 2025

Frequently Asked Questions

O3 Security · Impact-Aware SCA

Is CVE-2025-30406 in your stack?

O3 detects CVE-2025-30406 across dependencies and uses function-level reachability to confirm whether the vulnerable code path is actually reachable — not just present. No false positives.

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