Inclusion of Functionality from Untrusted Control Sphere Affecting inetutils package, versions <2:1.9.4-11ubuntu0.2+esm4


Severity

Recommended
medium

Based on Ubuntu security rating.

Threat Intelligence

EPSS
0.2% (10th percentile)

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  • Snyk IDSNYK-UBUNTU2004-INETUTILS-15363876
  • published6 Mar 2026
  • disclosed27 Feb 2026

Introduced: 27 Feb 2026

CVE-2026-28372  (opens in a new tab)
CWE-829  (opens in a new tab)

How to fix?

Upgrade Ubuntu:20.04 inetutils to version 2:1.9.4-11ubuntu0.2+esm4 or higher.

NVD Description

Note: Versions mentioned in the description apply only to the upstream inetutils package and not the inetutils package as distributed by Ubuntu. See How to fix? for Ubuntu:20.04 relevant fixed versions and status.

telnetd in GNU inetutils through 2.7 allows privilege escalation that can be exploited by abusing systemd service credentials support added to the login(1) implementation of util-linux in release 2.40. This is related to client control over the CREDENTIALS_DIRECTORY environment variable, and requires an unprivileged local user to create a login.noauth file.

CVSS Base Scores

version 3.1