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

Severity: high (CVSS 8.6 v3.1)
Exploited in the wild: not listed in CISA KEV
EPSS: 0.2% probability of exploitation in the next 30 days
Public exploit or detection template: none known
Published: 2025-04-29 · updated 2026-06-17
Weakness: CWE-287

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.

Affected products

troglobit finit: from 3.0-rc1, < 4.11

References

https://github.com/troglobit/finit/commit/6528628b5c771c25ffa0cb1a46c6c89d9d0d69e0
https://github.com/troglobit/finit/security/advisories/GHSA-563g-p98j-mc9q

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