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.
CVE-2025-30406
Score elevated to 9.0 because this CVE is listed on the CISA Known Exploited Vulnerabilities catalog (added 2025-04-08), indicating real-world exploitation has been confirmed by US federal agencies. NVD baseline CVSS 9.0 retained for reference. Confidence: HIGH.
- Actively exploited in the wild (CISA-KEV)
No vendor fix yet — apply a workaround or compensating control (WAF / firewall / segmentation) and watch for a patch.
- CVSS v3
- 9.0
- EG Score
- 9.0(high)
- EG Risk
- 81(Attend)EG Risk 81/100SSVC: Attend
EG Risk is EchelonGraph's 0–100 priority score: it fuses intrinsic severity with real-world exploitation and automatability so you can rank equal-severity CVEs and fix the most dangerous first. Higher = act sooner. Distinct from the 0–10 EG Score (severity).
How it’s computedSeverity90% × 45%Exploitation100% × 40%Automatability0% × 15%Action: Remediate soon — notable exploitation risk. - EPSS
- 99.8%
- KEV
- ⚠ Exploited
Published
April 3, 2025
Last Modified
November 5, 2025
Advisory Details (2)
Auto-updated Jun 2, 2026Known Exploited Vulnerabilities Catalog | CISA
Known Exploited Vulnerabilities Catalog | CISA. Listed in CISA Known Exploited Vulnerabilities catalog.
https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2025-30406Weakness Classification(2)
MITRE Common Weakness Enumeration — the root-cause categories this CVE belongs to.
Data Freshness Timeline
(refreshed 52× in last 7d / 211× in last 30d)
Each row is a source pipeline that fetched or updated this CVE on that date, with what changed. For example, "NVD update" means NVD published or revised its analysis for this CVE; "MITRE cvelistV5" means we ingested or refreshed it from the CNA feed. Most recent first.
Showing the most recent 100 of 374 total refreshes for this CVE.
- 2026-07-23 02:53 UTCEG score recompute
- 2026-07-23 00:17 UTCEG score recompute
- 2026-07-23 00:17 UTCGHSA enrichment
- 2026-07-22 20:08 UTCGHSA enrichment
- 2026-07-22 19:40 UTCCISA KEV update
- 2026-07-22 15:59 UTCEG score recompute
- 2026-07-22 15:59 UTCGHSA enrichment
- 2026-07-22 14:07 UTCEPSS rescore
- 2026-07-22 14:07 UTCEPSS rescore
- 2026-07-22 11:50 UTCGHSA enrichment
- 2026-07-22 07:42 UTCGHSA enrichment
- 2026-07-22 03:33 UTCGHSA enrichment
- 2026-07-21 23:23 UTCGHSA enrichment
- 2026-07-21 18:29 UTCEG score recompute
- 2026-07-21 18:29 UTCGHSA enrichment
- 2026-07-21 15:24 UTCEPSS rescore
- 2026-07-21 15:24 UTCEPSS rescore
- 2026-07-21 14:37 UTCCISA KEV update
- 2026-07-21 14:21 UTCGHSA enrichment
- 2026-07-21 10:12 UTCGHSA enrichment
- 2026-07-21 06:02 UTCGHSA enrichment
- 2026-07-21 01:54 UTCGHSA enrichment
- 2026-07-20 21:46 UTCGHSA enrichment
- 2026-07-20 17:37 UTCEG score recompute
- 2026-07-20 17:37 UTCGHSA enrichment
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- 2026-07-20 17:07 UTCEPSS rescore
- 2026-07-20 13:29 UTCGHSA enrichment
- 2026-07-20 09:21 UTCGHSA enrichment
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- 2026-07-20 01:04 UTCGHSA enrichment
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- 2026-07-17 23:25 UTCGHSA enrichment
- 2026-07-17 19:17 UTCGHSA enrichment
- 2026-07-17 15:09 UTCGHSA enrichment
- 2026-07-17 11:01 UTCGHSA enrichment
- 2026-07-17 06:53 UTCGHSA enrichment
- 2026-07-17 02:45 UTCGHSA enrichment
- 2026-07-16 22:37 UTCGHSA enrichment
- 2026-07-16 18:29 UTCGHSA enrichment
- 2026-07-16 17:04 UTCCISA KEV update
- 2026-07-16 14:21 UTCGHSA enrichment
- 2026-07-16 10:13 UTCGHSA enrichment
- 2026-07-16 06:04 UTCGHSA enrichment
- 2026-07-16 01:56 UTCGHSA enrichment
- 2026-07-15 21:46 UTCGHSA enrichment
- 2026-07-15 17:38 UTCGHSA enrichment
- 2026-07-15 16:49 UTCCISA KEV update
- 2026-07-15 15:04 UTCCISA KEV update
- 2026-07-15 13:29 UTCGHSA enrichment
- 2026-07-15 09:21 UTCGHSA enrichment
- 2026-07-15 05:12 UTCGHSA enrichment
- 2026-07-15 01:59 UTCEPSS rescore
- 2026-07-15 01:59 UTCEPSS rescore
- 2026-07-15 01:02 UTCGHSA enrichment
- 2026-07-14 20:54 UTCGHSA enrichment
- 2026-07-14 18:05 UTCCISA KEV update
- 2026-07-14 16:46 UTCGHSA enrichment
- 2026-07-14 12:38 UTCGHSA enrichment
- 2026-07-14 08:29 UTCGHSA enrichment
- 2026-07-14 04:21 UTCGHSA enrichment
- 2026-07-14 00:11 UTCGHSA enrichment
- 2026-07-13 20:03 UTCGHSA enrichment
- 2026-07-13 17:07 UTCCISA KEV update
- 2026-07-13 15:54 UTCGHSA enrichment
- 2026-07-13 11:46 UTCGHSA enrichment
- 2026-07-13 07:38 UTCGHSA enrichment
- 2026-07-13 06:12 UTCEPSS rescore
- 2026-07-13 06:12 UTCEPSS rescore
- 2026-07-13 03:30 UTCGHSA enrichment
- 2026-07-12 23:22 UTCGHSA enrichment
- 2026-07-12 19:14 UTCGHSA enrichment
- 2026-07-12 15:05 UTCGHSA enrichment
- 2026-07-12 10:56 UTCGHSA enrichment
- 2026-07-12 06:47 UTCGHSA enrichment
- 2026-07-12 02:39 UTCGHSA enrichment
- 2026-07-11 22:31 UTCGHSA enrichment
- 2026-07-11 18:23 UTCGHSA enrichment
- 2026-07-11 14:14 UTCGHSA enrichment
- 2026-07-11 10:06 UTCGHSA enrichment
- 2026-07-11 05:57 UTCGHSA enrichment
- 2026-07-11 01:48 UTCGHSA enrichment
- 2026-07-10 21:40 UTCGHSA enrichment
- 2026-07-10 17:52 UTCCISA KEV update
- 2026-07-10 17:32 UTCGHSA enrichment
- 2026-07-10 13:23 UTCGHSA enrichment
- 2026-07-10 09:14 UTCGHSA enrichment
- 2026-07-10 05:05 UTCGHSA enrichment
- 2026-07-10 00:56 UTCGHSA enrichment
- 2026-07-09 20:48 UTCGHSA enrichment
- 2026-07-09 16:39 UTCGHSA enrichment
Publicly available exploits
(4 references)Working exploit code is in the public domain (1 Metasploit module) (2 GitHub PoCs). Defenders should treat patch urgency accordingly — public PoCs typically lead to mass-exploitation within 24-72 hours.
- GitHub PoCmchklt/CVE-2025-30406First seen Jul 31, 2025
CVE-2025-30406 ViewState Exploit PoC
Open source ↗ - GitHub PoCW01fh4cker/CVE-2025-30406First seen Apr 24, 2025
Exploit for CVE-2025-30406
Open source ↗ - Metasploitexploit/windows/http/gladinet_viewstate_deserialization_cve_2025_30406✓ verifiedFirst seen Apr 3, 2025
Gladinet CentreStack/Triofox ASP.NET ViewState Deserialization
Open source ↗ - Nucleihttp/cves/2025/CVE-2025-30406.yamlFirst seen Jan 1, 2025
Gladinet CentreStack < 16.4.10315.56368 Use of Hard-coded Key Leads to Unauthenticated RCE
Open source ↗
Frequently asked(6)
What is CVE-2025-30406?
When was CVE-2025-30406 disclosed?
Is CVE-2025-30406 actively exploited?
What is the CVSS score of CVE-2025-30406?
Which products are affected by CVE-2025-30406?
How do I remediate CVE-2025-30406?
Dependency Blast Radius
Explore the affected products and dependency analysis for CVE-2025-30406
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