CVE-2025-21611: tgstation-server's role authorization incorrectly OR'd with user's enabled status
tgstation-server is a production scale tool for BYOND server management. Prior to 6.12.3, roles used to authorize API methods were incorrectly OR'd instead of AND'ed with the role used to determine if a user was enabled. This allows enabled users access to most, but not all, authorized actions regardless of their permissions. Notably, the WriteUsers right is unaffected so users may not use this bug to permanently elevate their account permissions. The fix is release in tgstation-server-v6.12.3.
Affected Software
Remediation
Event History
Frequently Asked Questions
What is the severity of CVE-2025-21611?
The severity of CVE-2025-21611 is classified as high due to improper authorization leading to potential unauthorized access.
How do I fix CVE-2025-21611?
To fix CVE-2025-21611, update tgstation-server to version 6.12.3 or later.
Who is affected by CVE-2025-21611?
Users of tgstation-server versions prior to 6.12.3 are affected by CVE-2025-21611.
What type of vulnerability is CVE-2025-21611?
CVE-2025-21611 is an authorization vulnerability that impacts API method access.
What impact does CVE-2025-21611 have on tgstation-server?
CVE-2025-21611 allows enabled users to gain unauthorized access to certain API methods.