Critical severity · published Jul 30, 2026
CVE-2026-54363
CentreStack < 17.5 Hardcoded Key Token Forgery RCE
9.1
CVSS
0.7%
EPSS
No
On KEV
Description
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.
CVSS vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:N
Attack vector
Network
Complexity
Low
Privileges
None
User interaction
None
Confidentiality
High
Integrity
High
Availability
None
Scope
Unchanged
Exploitation
Is it being used?
Exploit prediction (EPSS)0.7% · higher than 52% of CVEs
Exploited in the wildNo evidence yet
CISA KEVNot listed
Ransomware campaign useNot known
Affected products
Which versions
CE
CentreStack · Gladinet
before 17.5 · source: vendor
References
NVD
https://nvd.nist.gov/vuln/detail/CVE-2026-54363
CVE.org
https://www.cve.org/CVERecord?id=CVE-2026-54363
www.centrestack.com
https://www.centrestack.com/
www.vulncheck.com
https://www.vulncheck.com/advisories/centrestack-hardcoded-key-token-forgery-rce
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