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CVE-2025-21611— tgstation-server's role authorization incorrectly OR'd with user's enabled status

Quick assessment

Affected
tgstation tgstation-server
Exploitation
Public or AI PoC available; prioritize validation
Recommended action
Check the vendor advisory and references for a fixed version. If immediate upgrade is impossible, restrict exposure and increase monitoring.

tgstation-server是tgstation开源的一款用于管理生产BYOND服务器的工具集。 tgstation-server 6.12.3之前版本存在授权问题漏洞，该漏洞源于错误地进行了“或”运算，而不是“与”。

CVSS 8.8 · High EPSS 0.47% · P39

Possible ATT&CK Techniques 1 AI

T1078 · Valid Accounts
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I. Basic Information for CVE-2025-21611

Vulnerability Information
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Vulnerability Title
tgstation-server's role authorization incorrectly OR'd with user's enabled status
Source: CVE Program / CVE List V5
Vulnerability 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.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
Source: CVE Program / CVE List V5
Vulnerability Type
授权机制不恰当
Source: CVE Program / CVE List V5
Vulnerability Title
tgstation-server 授权问题漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
tgstation-server是tgstation开源的一款用于管理生产BYOND服务器的工具集。 tgstation-server 6.12.3之前版本存在授权问题漏洞，该漏洞源于错误地进行了“或”运算，而不是“与”。
Source: CNNVD (China National Vulnerability Database)
CVSS Information
N/A
Source: CNNVD (China National Vulnerability Database)
Vulnerability Type
N/A
Source: CNNVD (China National Vulnerability Database)

Affected Products

Vendor Product Affected Versions CPE Subscribe
tgstation tgstation-server >= 6.11.0, < 6.12.3 -

II. Public POCs for CVE-2025-21611

# POC Description Source Link Shenlong Link
AI-Generated POC Premium
Qwen3.6-35B-A3B · 6143 chars
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III. Intelligence Information for CVE-2025-21611

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Patches & Fixes for CVE-2025-21611 (1)

Vendor Advisories for CVE-2025-21611 (1)

Proof of Concept for CVE-2025-21611 (1)

IV. Related Vulnerabilities

Same product: tgstation-server
Same vendor: tgstation
Same weakness: CWE-285

V. Comments for CVE-2025-21611

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