CVE-2026-54363 CentreStack < 17.5 Hardcoded Key Token Forgery RCE
Unauthenticated attackers can forge tokens using a hardcoded key to gain domain administrator privileges and execute remote code on CentreStack servers.
- Exploited in the wild
- Not known
- Login needed
- Not needed
- Attackable
- Over the internet
- Victim action needed
- Not needed
- Fix
- None listed
What is CVE-2026-54363?
CVE-2026-54363 is a critical vulnerability in Gladinet CentreStack, published on 30 Jul 2026. An attacker can exploit it over the internet without logging in, with no action from the victim.
Official 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.
Weakness: CWE-321
Which versions are affected by CVE-2026-54363?
How do I fix CVE-2026-54363?
No fix has been published for CVE-2026-54363 yet. Limit exposure of the affected software until one is available.
Is CVE-2026-54363 being exploited?
There is no known exploitation of CVE-2026-54363 in the wild and no public exploit code.
Sources
Also known as GHSA-vmg2-rwj3-8rq2.