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

Should you act?

Exploited: patch now if you run it

CISA has confirmed exploitation in the wild. This signal is computed from CISA KEV, EPSS and CVSS data; it is not an editorial verdict.

• Yes, if you run Gladinet CentreStack. CISA added this CVE to its Known Exploited Vulnerabilities catalog on 2025-04-08, which means there is reliable evidence of exploitation in the wild. US federal agencies must remediate by 2025-04-29; treat that as the outer limit, not the target.
• EPSS 94.3%, percentile 99.9: FIRST’s model estimates a 94.3% chance of exploitation activity in the next 30 days, higher than 99.9% of all scored CVEs (very high). EPSS is a probability, not a verdict.
• Remotely reachable with no login and no user interaction. If the vulnerable service is exposed to the internet, prioritize it.

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.

CISA’s summary

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.

Weakness type: CWE-321.

Product: Gladinet CentreStack · Assigned by: mitre · Published: 2025-04-03

Affected and fixed versions

Severity scores

• Attack vector: network (remotely reachable)
• Attack complexity: high (needs special conditions)
• Privileges required: none (no login)
• User interaction: none
• Scope: changed (can affect other components)

CVSS measures how bad a flaw is if exploited, not how likely exploitation is. Read it next to the exploitation data below.

Exploitation and urgency

• CISA KEV: added 2025-04-08; federal due date 2025-04-29. Known ransomware use: Unknown.
• CISA required action: Apply mitigations per vendor instructions, follow applicable BOD 22-01 guidance for cloud services, or discontinue use of the product if mitigations are unavailable.
• CISA SSVC assessment: exploitation active, automatable no, technical impact total.
• FIRST EPSS (model of 2026-10-21): 94.34% probability of exploitation activity in the next 30 days; percentile 99.9.

Timeline

• 2025-04-03 — CVE record published by mitre
• 2025-04-08 — Added to CISA’s Known Exploited Vulnerabilities catalog
• 2025-04-29 — CISA remediation deadline for US federal agencies
• 2025-10-21 — CVE record last updated

Sources and references

Original sources first. Version and fix details should always be confirmed against the vendor or project advisory.

Vendor and project advisories, patches

1. Listed in CISA KEV notes (gladinetsupport.s3.us-east-1.amazonaws.com) gladinetsupport.s3.us-east-1.amazonaws.com
2. Listed in CISA KEV notes (gladinetsupport.s3.us-east-1.amazonaws.com) gladinetsupport.s3.us-east-1.amazonaws.com

Vulnerability records

1. CVE.org record CVE-2025-30406 cve.org
2. NVD entry CVE-2025-30406 nvd.nist.gov

Government

1. CISA Known Exploited Vulnerabilities catalog entry cisa.gov

Other references from the CVE record and advisory

1. centrestack.com centrestack.com

All exploited Gladinet vulnerabilities · Today’s Security Digest