Gladinet CentreStack up to 17.4 AccessTicket AccessTicket.Encrypt/AccessTicket.Decrypt SysNumber hard-coded key

CVSS Meta Temp Score
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Current Exploit Price (≈)
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CTI Interest Score
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7.0$0-$5k1.28

Summaryinfo

A vulnerability labeled as critical has been found in Gladinet CentreStack up to 17.4. This impacts the function AccessTicket.Encrypt/AccessTicket.Decrypt of the component AccessTicket. Such manipulation of the argument SysNumber leads to hard-coded key. This vulnerability is referenced as CVE-2026-54363. It is possible to launch the attack remotely. No exploit is available.

Detailsinfo

A vulnerability was found in Gladinet CentreStack up to 17.4 and classified as critical. Affected by this issue is the function AccessTicket.Encrypt/AccessTicket.Decrypt of the component AccessTicket. The manipulation of the argument SysNumber with an unknown input leads to a hard-coded key vulnerability. Using CWE to declare the problem leads to CWE-321. The use of a hard-coded cryptographic key significantly increases the possibility that encrypted data may be recovered. Impacted is confidentiality, integrity, and availability. CVE summarizes:

CentreStack before 17.5 contains a hardcoded cryptographic key vulnerability that allows unauthenticated attackers to forge arbitrary encrypted tokens by exploiting a static SysNumber value used as entropy for AccessTicket.Encrypt() and AccessTicket.Decrypt() across all installations. Attackers can use the hardcoded key to craft valid x-glad-auth headers and call privileged API endpoints such as acquiretenantbackuptoken to obtain a domain administrator IdentityTicket, enabling a complete unauthenticated remote code execution chain.

The advisory is shared for download at centrestack.com. This vulnerability is handled as CVE-2026-54363 since 06/12/2026. The exploitation is known to be easy. The attack may be launched remotely. No form of authentication is required for exploitation. There are known technical details, but no exploit is available. The MITRE ATT&CK project declares the attack technique as T1600.001.

Upgrading to version 17.5 eliminates this vulnerability.

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Productinfo

Vendor

Name

Version

CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔒
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 7.3
VulDB Meta Temp Score: 7.0

VulDB Base Score: 7.3
VulDB Temp Score: 7.0
VulDB Vector: 🔒
VulDB Reliability: 🔍

CVSSv2info

AVACAuCIA
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VectorComplexityAuthenticationConfidentialityIntegrityAvailability
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VulDB Base Score: 🔒
VulDB Temp Score: 🔒
VulDB Reliability: 🔍

Exploitinginfo

Class: Hard-coded key
CWE: CWE-321 / CWE-320
CAPEC: 🔒
ATT&CK: 🔒

Physical: No
Local: No
Remote: Yes

Availability: 🔒
Status: Not defined
Price Prediction: 🔍
Current Price Estimation: 🔒

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Threat Intelligenceinfo

Interest: 🔍
Active Actors: 🔍
Active APT Groups: 🔍

Countermeasuresinfo

Recommended: Upgrade
Status: 🔍

0-Day Time: 🔒

Upgrade: CentreStack 17.5

Timelineinfo

06/12/2026 CVE reserved
07/30/2026 +48 days Advisory disclosed
07/30/2026 +0 days VulDB entry created
07/30/2026 +0 days VulDB entry last update

Sourcesinfo

Advisory: centrestack.com
Status: Confirmed

CVE: CVE-2026-54363 (🔒)
GCVE (CVE): GCVE-0-2026-54363
GCVE (VulDB): GCVE-100-384800

Entryinfo

Created: 07/30/2026 14:57
Changes: 07/30/2026 14:57 (56)
Complete: 🔍
Cache ID: 216::103

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