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Ubuntu 20.04 LTS Inetutils Important Access Issue CVE-2026-24061

ubuntu
Calendar Grey February 18, 2026
Dist Ubuntu Esm H88
Inetutils fixes important access issue in Ubuntu releases, allowing correction of unintended network service access.
Inetutils could allow unintended access to network services.

Summary

Inetutils could allow unintended access to network services.

Software Description:

- inetutils: Collection of common network programs

Details:

USN-7992-1 fixed vulnerabilities in telnetd in Inetutils. This update

provides the corresponding update for Ubuntu 16.04 LTS, Ubuntu 18.04 LTS,

and Ubuntu 20.04 LTS.

Original advisory 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.

Topics%20covered

Topics Covered

security advisory access issue Ubuntu important telnet network services

Update Instructions

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

Ubuntu 20.04 LTS
  inetutils-telnetd               2:1.9.4-11ubuntu0.2+esm3
                                  Available with Ubuntu Pro

Ubuntu 18.04 LTS
  inetutils-telnetd               2:1.9.4-3ubuntu0.1+esm4
                                  Available with Ubuntu Pro

Ubuntu 16.04 LTS
  inetutils-telnetd               2:1.9.4-1ubuntu0.1~esm5
                                  Available with Ubuntu Pro

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

References

https://ubuntu.com/security/notices/USN-7992-2

https://ubuntu.com/security/notices/USN-7992-1

CVE-2026-24061

Severity
important
Lowest
Low
Medium
High
Critical

Ubuntu Security Notice USN-7992-2

Topics%20covered

Topics Covered

security advisory access issue Ubuntu important telnet network services

Package Information

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