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 PROB
- 94%
- EPSS %ILE
- 100%
- 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 49× in last 7d / 212× 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 761 total refreshes for this CVE.
- 2026-09-19 11:54 UTCGHSA enrichment
- 2026-09-19 07:44 UTCGHSA enrichment
- 2026-09-19 03:35 UTCGHSA enrichment
- 2026-09-18 23:27 UTCEG score recompute
- 2026-09-18 23:27 UTCGHSA enrichment
- 2026-09-18 19:27 UTCEPSS rescore
- 2026-09-18 19:20 UTCCISA KEV update
- 2026-09-18 19:19 UTCGHSA enrichment
- 2026-09-18 15:10 UTCGHSA enrichment
- 2026-09-18 14:15 UTCCISA KEV update
- 2026-09-18 11:02 UTCGHSA enrichment
- 2026-09-18 06:54 UTCGHSA enrichment
- 2026-09-18 02:46 UTCGHSA enrichment
- 2026-09-17 22:37 UTCGHSA enrichment
- 2026-09-17 18:29 UTCGHSA enrichment
- 2026-09-17 14:21 UTCGHSA enrichment
- 2026-09-17 10:13 UTCGHSA enrichment
- 2026-09-17 06:05 UTCGHSA enrichment
- 2026-09-17 01:57 UTCGHSA enrichment
- 2026-09-16 21:49 UTCGHSA enrichment
- 2026-09-16 17:41 UTCGHSA enrichment
- 2026-09-16 14:10 UTCCISA KEV update
- 2026-09-16 13:30 UTCGHSA enrichment
- 2026-09-16 09:21 UTCGHSA enrichment
- 2026-09-16 05:13 UTCEG score recompute
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- 2026-09-16 05:13 UTCGHSA enrichment
- 2026-09-16 05:13 UTCEPSS rescore
- 2026-09-16 01:05 UTCGHSA enrichment
- 2026-09-15 20:57 UTCGHSA enrichment
- 2026-09-15 16:49 UTCGHSA enrichment
- 2026-09-15 12:41 UTCGHSA enrichment
- 2026-09-15 08:33 UTCGHSA enrichment
- 2026-09-15 04:25 UTCGHSA enrichment
- 2026-09-15 00:17 UTCGHSA enrichment
- 2026-09-14 20:09 UTCGHSA enrichment
- 2026-09-14 19:24 UTCCISA KEV update
- 2026-09-14 16:01 UTCGHSA enrichment
- 2026-09-14 11:53 UTCGHSA enrichment
- 2026-09-14 07:45 UTCGHSA enrichment
- 2026-09-14 03:37 UTCGHSA enrichment
- 2026-09-13 23:29 UTCGHSA enrichment
- 2026-09-13 19:21 UTCGHSA enrichment
- 2026-09-13 15:13 UTCGHSA enrichment
- 2026-09-13 11:05 UTCGHSA enrichment
- 2026-09-13 06:56 UTCGHSA enrichment
- 2026-09-13 02:48 UTCGHSA enrichment
- 2026-09-12 22:41 UTCGHSA enrichment
- 2026-09-12 18:33 UTCGHSA enrichment
- 2026-09-12 14:25 UTCGHSA enrichment
- 2026-09-12 10:16 UTCGHSA enrichment
- 2026-09-12 06:07 UTCGHSA enrichment
- 2026-09-12 01:58 UTCGHSA enrichment
- 2026-09-11 21:50 UTCGHSA enrichment
- 2026-09-11 18:49 UTCCISA KEV update
- 2026-09-11 17:42 UTCGHSA enrichment
- 2026-09-11 13:34 UTCEG score recompute
- 2026-09-11 13:34 UTCGHSA enrichment
- 2026-09-11 09:35 UTCEPSS rescore
- 2026-09-11 09:26 UTCGHSA enrichment
- 2026-09-11 05:18 UTCGHSA enrichment
- 2026-09-11 01:10 UTCGHSA enrichment
- 2026-09-10 21:02 UTCGHSA enrichment
- 2026-09-10 19:28 UTCCISA KEV update
- 2026-09-10 16:54 UTCGHSA enrichment
- 2026-09-10 12:46 UTCGHSA enrichment
- 2026-09-10 08:38 UTCGHSA enrichment
- 2026-09-10 04:28 UTCGHSA enrichment
- 2026-09-10 00:19 UTCGHSA enrichment
- 2026-09-09 20:10 UTCGHSA enrichment
- 2026-09-09 19:08 UTCCISA KEV update
- 2026-09-09 16:00 UTCGHSA enrichment
- 2026-09-09 11:52 UTCGHSA enrichment
- 2026-09-09 07:43 UTCGHSA enrichment
- 2026-09-09 03:35 UTCGHSA enrichment
- 2026-09-08 23:27 UTCGHSA enrichment
- 2026-09-08 19:18 UTCGHSA enrichment
- 2026-09-08 18:54 UTCCISA KEV update
- 2026-09-08 15:09 UTCGHSA enrichment
- 2026-09-08 10:59 UTCGHSA enrichment
- 2026-09-08 06:50 UTCGHSA enrichment
- 2026-09-08 06:49 UTCGHSA enrichment
- 2026-09-08 02:38 UTCGHSA enrichment
- 2026-09-07 22:30 UTCGHSA enrichment
- 2026-09-07 18:21 UTCGHSA enrichment
- 2026-09-07 14:12 UTCGHSA enrichment
- 2026-09-07 10:02 UTCGHSA enrichment
- 2026-09-07 05:52 UTCGHSA enrichment
- 2026-09-07 01:44 UTCGHSA enrichment
- 2026-09-06 21:33 UTCGHSA enrichment
- 2026-09-06 17:24 UTCEG score recompute
- 2026-09-06 17:24 UTCGHSA enrichment
- 2026-09-06 13:46 UTCEPSS rescore
- 2026-09-06 13:46 UTCEPSS rescore
- 2026-09-06 13:15 UTCGHSA enrichment
- 2026-09-06 09:07 UTCGHSA enrichment
- 2026-09-06 04:56 UTCGHSA enrichment
- 2026-09-06 00:48 UTCGHSA enrichment
- 2026-09-05 20:38 UTCGHSA enrichment
- 2026-09-05 16:30 UTCEG score recompute
- 2026-09-05 16:30 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
Is Your Infrastructure Affected by CVE-2025-30406?
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