CVE-2025-21611

8.8 highEPSS 0.5%

High (8.8) in tgstation13 tgstation-server. EPSS 0.5% chance of exploitation in the next 30 days.

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.

Severity

CVSS 3.1

8.8 high

CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

EPSS: 0.5% chance of exploitation in the next 30 days; higher than 41% of CVEs (scores of 2026-10-31)
CWE: CWE-285
Published: 2025-01-06
Modified: 2026-06-17
Record from: the NVD, synced 2026-10-19

Affected

tgstation13:tgstation-server

References

https://github.com/tgstation/tgstation-server/commit/e7b1189620baaf03c2d23f6e164d07c7c7d87d57
https://github.com/tgstation/tgstation-server/issues/2064
https://github.com/tgstation/tgstation-server/security/advisories/GHSA-rf5r-q276-vrc4

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