CVE-2025-30406
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.
do firstApply mitigations per vendor instructions, follow applicable BOD 22-01 guidance for cloud services, or discontinue use of the product if mitigations are unavailable.
Can a WAF block it? No. The vulnerability involves sending a serialized payload to the CentreStack portal over HTTP that is deserialized on the server side. The malicious input looks like a normal serialized object, so a web application firewall cannot reliably distinguish it from legitimate requests.
Also consider: patch · rotate
Based on an AI reading of the CVE description, and no vendor rule found yet. We check Cloudflare, AWS, Google Cloud Armor and Azure; for Akamai, Imperva, Fastly, F5, ask your vendor.
Is CVE-2025-30406 being exploited?
Yes. CVE-2025-30406 appears in CISA's Known Exploited Vulnerabilities catalog, which means exploitation in the wild has been confirmed and reported. Treat it as active rather than theoretical, and patch it ahead of higher-scoring vulnerabilities that carry no exploitation evidence.
How severe is CVE-2025-30406?
CVE-2025-30406 is rated Critical with a CVSS score of 9.0. Severity describes how bad exploitation would be, not how likely it is: pair it with exploitation evidence before deciding what to patch first.
Is there a patch for CVE-2025-30406?
Yes. A fix has been recorded for CVE-2025-30406. The vendor advisory is the authority on the exact fixed version — apply it from there rather than from a summary.
What does CVE-2025-30406 affect?
CVE-2025-30406 affects gladinet:centrestack. Confirm the exact affected versions against the vendor advisory before deciding you are exposed.
Exploitation status reflects CISA's KEV catalog as we last synced it. Check the catalog directly.
- affected< 16.4.10315.56368
As published in the CVE Program record. A version outside these ranges is not a statement that it is unaffected — vendors sometimes understate a range, and distribution-backported builds carry upstream numbers that do not reflect what was patched into them.
public exploits
Public exploit code: 1 Metasploit module · 2 GitHub proofs of concept · 1 Nuclei template
- exploit/windows/http/gladinet_viewstate_deserialization_cve_2025_30406 · exploit · excellent
- Gladinet CentreStack < 16.4.10315.56368 Use of Hard-coded Key Leads to Unauthenticated RCE · detection template · critical
- mchklt/CVE-2025-30406 · 90 ★
- W01fh4cker/CVE-2025-30406 · 12 ★
Listed so you can judge urgency, not as a recommendation to run anything. GitHub “proofs of concept” are unvetted: some are fake or carry malware. Exploit-DB marks the entries its staff verified.
cisa ssvc
- exploitation
- active
- automatable
- no
- technical impact
- total
Assessed by CISA 8 Apr 2025 (SSVC 2.0.3).
timeline
- 3 Apr 2025Published
- 8 Apr 2025Added to CISA KEV (exploited in the wild) · 4 days later
- 8 Apr 2025CISA SSVC assessment: exploitation active · 1 day later
- 24 Apr 2025First public exploit or proof of concept · 15 days later
- 29 Apr 2025CISA remediation due date (US federal agencies) · 5 days later
- 21 Oct 2025CVE record last updated · 176 days (about 6 months) later
- 2 Nov 2026Analysed by vulneraibility.com · 377 days (about 1 year) later
- Linkcentrestack.com /p/gce_latest_release.html
- Linkgladinetsupport.s3.us-east-1.amazonaws.com /gladinet/securityadvisory-cve-2005.pdf
- Linkcisa.gov /known-exploited-vulnerabilities-catalog?field_cve=CVE-2025-30406
sources
- CVE List (CVE.org): description, affected versions, references; CVE Terms of Use
- NVD: CVSS and CPE data
- CISA KEV catalog: exploitation, date added, due date
- CISA Vulnrichment (ADP): SSVC decision points
- FIRST EPSS: exploit probability and percentile
- Metasploit Framework: exploit and scanner modules
- Nuclei templates: detection templates
- PoC-in-GitHub: GitHub repositories that claim a proof of concept
- Summary, impact and triage tags: written by our AI analysis pipeline from the sources above. Check them against the sources.