Inclusion of Functionality from Untrusted Control Sphere Affecting inetutils-telnet package, versions <2.8-r0


Severity

Recommended
0.0
high
0
10

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Threat Intelligence

EPSS
0.2% (10th percentile)

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  • Snyk IDSNYK-ALPINE324-INETUTILSTELNET-21043738
  • published16 Oct 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 Alpine:3.24 inetutils-telnet to version 2.8-r0 or higher.

NVD Description

Note: Versions mentioned in the description apply only to the upstream inetutils-telnet package and not the inetutils-telnet package as distributed by Alpine. See How to fix? for Alpine:3.24 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