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[USN-7992-1] Inetutils vulnerability

Posted on 03 February 2026
Ubuntu Security

==========================================================================Ubuntu Security Notice USN-7992-1
February 02, 2026

inetutils vulnerability
==========================================================================
A security issue affects these releases of Ubuntu and its derivatives:

- Ubuntu 25.10
- Ubuntu 24.04 LTS
- Ubuntu 22.04 LTS

Summary:

Inetutils could allow unintended access to network services.

Software Description:
- inetutils: Collection of common network programs

Details:

Kyu Neushwaistein discovered that telnetd in Inetutils incorrectly handled
certain environment variables. A remote attacker could use this issue to
bypass authentication and open a session as an administrator.

Update instructions:

The problem can be corrected by updating your system to the following
package versions:

Ubuntu 25.10
inetutils-telnetd 2:2.6-1ubuntu3.1

Ubuntu 24.04 LTS
inetutils-telnetd 2:2.5-3ubuntu4.1

Ubuntu 22.04 LTS
inetutils-telnetd 2:2.2-2ubuntu0.2

In general, a standard system update will make all the necessary changes.

References:
https://ubuntu.com/security/notices/USN-7992-1
CVE-2026-24061

Package Information:
https://launchpad.net/ubuntu/+source/inetutils/2:2.6-1ubuntu3.1
https://launchpad.net/ubuntu/+source/inetutils/2:2.5-3ubuntu4.1
https://launchpad.net/ubuntu/+source/inetutils/2:2.2-2ubuntu0.2

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