telnetd in GNU Inetutils through 2.7 allows remote authentication bypass via a "-f root" value for the USER environment variable.
CVSS Details
- CVSS 3.1 Base Score: 9.8
- CVSS 3.1 Vector: (CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H)
Covered by Rapid7
| Product | Vendor Advisory | Solution File | Added | Published |
|---|---|---|---|---|
| Debian | — | Upgrade inetutils | Jan 23, 2026 | Jan 23, 2026 |
| Gentoo Linux | — | Upgrade net-misc/inetutils. | Jan 27, 2026 | Jan 26, 2026 |
| Ubuntu | — | Upgrade inetutils-telnetd (Ubuntu Pro)Upgrade inetutils-telnetd | Feb 3, 2026 | Jan 21, 2026 |
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