CVE-2025-21611

tgstation-server's role authorization incorrectly OR'd with user's enabled status

HIGH
8.8
CVSS Score
Published: January 6, 2025 at 03:38 PM UTC
Updated: June 17, 2026 at 08:43 AM UTC
2 products affected across 2 vendorsTgstation ServerTgstation Server

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Severity
HIGH8.8
Exploit prediction
EPSS 0.5%
SSVC
No known exploit

Description

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

Our own answer: ranges merged, affected separated from platform-only, with confidence and review flags.

6.11.0 ≤ v < 6.12.3
Affected range stops below 6.12.3, so it looks safe — our inference, not a vendor statement
v < 6.12.3
Affected range stops below 6.12.3, so it looks safe — our inference, not a vendor statement

Remediation

No guide yet

No remediation guidance has been written for this CVE yet. What the record does show:

SSVC — Action Prioritization

SSVCNo known exploitNot automatableTotal impact

SSVC signals action urgency (what to patch first), separate from CVSS which measures severity.

CVSS

8.8HIGHGitHub_M
Attack Vector
NETWORK
Complexity
LOW
Privileges
LOW
User Interaction
NONE
Scope
UNCHANGED
Confidentiality
HIGH
Integrity
HIGH
Availability
HIGH
Vector?

Quick Info

StatusANALYZED
CWE
CWE-285

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