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CVE-2026-28372

Published: Feb 27, 2026

Modified: Mar 7, 2026

PUBLISHED

CVSS v3.1

7.4

HIGH

Description

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.

Vendor	Product	Versions
GNU	inetutils	affected `0 - <= 2.7`

Weaknesses (CWE)

CVSS v3.1 Details

CVSS v3.1 Vector

CVSS:3.1/AV:L/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H

Attack Vector

Local

Attack Complexity

High

Privileges Required

None

User Interaction

None

Scope

Unchanged

Confidentiality

High

Integrity

High

Availability

High

References

https://lists.gnu.org/archive/html/bug-inetutils/2026-02/msg00000.html

https://git.hadrons.org/cgit/debian/pkgs/inetutils.git/commit/?id=3953943d8296310485f98963883a798545ab9a6c

https://lists.gnu.org/archive/html/bug-inetutils/2026-02/msg00012.html

https://www.openwall.com/lists/oss-security/2026/02/24/1

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