CVE-2026-54363
CriticalCVSS 9.1Summary
CentreStack before version 17.5 contains a hardcoded cryptographic key vulnerability, allowing unauthenticated attackers to forge arbitrary encrypted tokens by exploiting a static SysNumber value used as entropy for AccessTicket.Encrypt() and AccessTicket.Decrypt(). Attackers can 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.
Risk Assessment
An unauthenticated attacker can remotely execute arbitrary code on the CentreStack server, leading to full server compromise and potential leakage of all stored data.
Recommendation
Immediately upgrade CentreStack to version 17.5 or later, which removes the hardcoded key.
Original NVD description (English source)
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.