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TI-2026-39257 Aliases CVE-2026-54365GHSA-q7f4-j8r5-hmxq

CentreStack < 17.3 Unauthenticated User Creation via Deserialization in GSNamespace.dll

Priority MEDIUM 44CWE-306Published · Updated

Key facts

Attack vector
Network
Privileges required
None
User interaction
None
Attack complexity
Low
Attack requirements
None
Impact type
Security bypass
Confidentiality · integrity · availability
None · High · None
Fix status
Fixed

Attack profile from CVSS 4.0 · CNA. Fix status from CNA. Impact type from CWE-306.

Summary

CentreStack before 17.3 contains an unauthenticated deserialization vulnerability in GSNamespace.dll that allows unauthenticated attackers to create arbitrary local OS user accounts by supplying a crafted base64-encoded XML string to exposed API endpoints. Attackers can send a malicious StorageConfigure parameter to the jsonimportuserbyupn, jsonimportuserbyupnex, or japiimportuserbyupn endpoints to trigger InternalImportAdUserByUPN(), causing GladinetCloudMonitor.exe to invoke the NetUserAdd Windows API with attacker-controlled credentials and create arbitrary directories on the server filesystem.

Why it matters now

Exploitation None reported CISA SSVC · not in CISA KEV
EPSS 0.00372 31st percentileScored 2026-11-07
Fix Fixed CentreStack (Gladinet): 17.3

SSVC decision points

CISA ADP · SSVC 2.0.3

Exploitation
None
Automatable
Yes
Technical impact
Partial

The decision (Track, Attend, Act) also depends on your mission and well-being impact; see CISA's SSVC guide.

Affected products

VendorProductAffected versionsFixed inStatusSource
GladinetCentreStackbefore 17.317.3Patch availableCNA
  • CentreStack VendorGladinet Affected before 17.3 Fixed in 17.3 Patch available CNA

Remediation

  • Fix · CNA CentreStack (Gladinet) Fixed in 17.3

Timeline

  1. 2026-10-02 Threatist record created from CVE-2026-54365
  2. 2026-10-03 Alias added: GHSA-q7f4-j8r5-hmxq

References

Other 1

  • TI-2025-21708 Hard-coded credentials in Gladinet CentreStack KEVCVSS 3.1CRITICAL 9.8
  • TI-2025-11451 Improper access control in TrioFox KEVCVSS 3.1CRITICAL 9.1
  • TI-2025-13351 Gladinet CentreStack and TrioFox Hard Coded AES Keys KEVCVSS 4.0HIGH 7.1
  • TI-2025-10418 Gladinet CentreStack and TrioFox Local File Inclusion Flaw KEVCVSS 3.1HIGH 7.5
  • TI-2026-07358 Gladinet Triofox Missing Authentication for Critical Functions CVSS 3.1CRITICAL 9.8
  • TI-2026-07357 Gladinet Triofox Stack-based Buffer Overflow in WOSDeviceDropFolder.dll CVSS 3.1CRITICAL 9.8
See all 17 →

Sources

This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences