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CVE-2025-29906— Finit bundled getty can bypass /bin/login

Quick assessment

Affected
troglobit finit
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.

finit是Joachim Wiberg个人开发者的一个Linux的快速初始化工具。 finit 4.11之前版本存在授权问题漏洞，该漏洞源于tty配置指令绕过/bin/login，可能导致未经验证的用户登录。

CVSS 8.6 · High EPSS 0.22% · P13

Possible ATT&CK Techniques 1 AI

T1078.001 · Default Accounts
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I. Basic Information for CVE-2025-29906

Vulnerability Information
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Vulnerability Title
Finit bundled getty can bypass /bin/login
Source: CVE Program / CVE List V5
Vulnerability Description
Finit is a fast init for Linux systems. Versions starting from 3.0-rc1 and prior to version 4.11 bundle an implementation of getty for the `tty` configuration directive that can bypass `/bin/login`, i.e., a user can log in as any user without authentication. This issue has been patched in version 4.11.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:C/C:H/I:H/A:H
Source: CVE Program / CVE List V5
Vulnerability Type
认证机制不恰当
Source: CVE Program / CVE List V5
Vulnerability Title
finit 授权问题漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
finit是Joachim Wiberg个人开发者的一个Linux的快速初始化工具。 finit 4.11之前版本存在授权问题漏洞，该漏洞源于tty配置指令绕过/bin/login，可能导致未经验证的用户登录。
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
troglobit finit >= 3.0-rc1, < 4.11 -

II. Public POCs for CVE-2025-29906

# POC Description Source Link Shenlong Link
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Qwen3.6-35B-A3B · 8957 chars
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In-depth vulnerability mechanism
Trigger conditions & impact
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III. Intelligence Information for CVE-2025-29906

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Vendor Advisories for CVE-2025-29906 (1)

IV. Related Vulnerabilities

Same product: finit
Same vendor: troglobit
Same weakness: CWE-287

V. Comments for CVE-2025-29906

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