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TI-2025-21291 Aliases CVE-2025-29906

Finit bundled getty can bypass /bin/login

Priority HIGH 72CWE-287Published · Updated

Key facts

Attack vector
Local
Privileges required
None
User interaction
Required
Attack complexity
Low
Impact type
Security bypass
Confidentiality · integrity · availability
High · High · High
Fix status
Fixed

Attack profile from CVSS 3.1 · CNA. Fix status from CNA. Impact type from CWE-287.

Summary

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.

Why it matters now

Exploitation Proof of concept CISA SSVC · not in CISA KEV
EPSS 0.00221 12th percentileScored 2026-11-07
Fix Fixed finit (troglobit): 4.11

SSVC decision points

CISA ADP · SSVC 2.0.3

Exploitation
Poc
Automatable
No
Technical impact
Total

The decision (Track, Attend, Act) also depends on your mission and well-being impact; see CISA's SSVC guide.

Affected products

VendorProductAffected versionsFixed inStatusSource
troglobitfinit3.0-rc1 to before 4.114.11Patch availableCNA
  • finit Vendortroglobit Affected 3.0-rc1 to before 4.11 Fixed in 4.11 Patch available CNA

Remediation

  • Fix · CNA finit (troglobit) Fixed in 4.11

Timeline

  1. 2026-10-02 Threatist record created from CVE-2025-29906

References

Other 2

  • TI-2020-19317 Redir 3.3 - Denial of Service CVSS 4.0HIGH 8.7
  • TI-2020-13817 There are multiple unauthenticated directory traversal vulnerabilities in different FTP… CVSS 3.1CRITICAL 9.8
  • TI-2022-24152 uev (aka libuev) before 2.4.1 has a buffer overflow in epoll_wait if maxevents is a large number. CVSS 3.1CRITICAL 9.8
  • TI-2020-13816 An unauthenticated stack-based buffer overflow vulnerability in common.c's handle_PORT in… CVSS 3.1CRITICAL 9.8
  • TI-2020-04260 Buffer overflow vulnerability in uftpd CVSS 3.1HIGH 8.8
  • TI-2020-11077 In uftpd before 2.12, handle_CWD in ftpcmd.c mishandled the path provided by the user… CVSS 3.1HIGH 7.5
See all 9 →

Sources

This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences