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.
CVSS breakdown
CVSS 3.1
Attack Vector
Local
Attack Complexity
High
Privileges Required
None
User Interaction
None
Scope
Unchanged
Confidentiality
High
Integrity
High
Availability
High
Affected products
- gnu / inetutils0 – 2.7
References
- MAILING_LISThttps://lists.gnu.org/archive/html/bug-inetutils/2026-02/msg00000.html
- MISChttps://git.hadrons.org/cgit/debian/pkgs/inetutils.git/commit/?id=3953943d8296310485f98963883a798545ab9a6c
- MAILING_LISThttps://lists.gnu.org/archive/html/bug-inetutils/2026-02/msg00012.html
- MAILING_LISThttps://www.openwall.com/lists/oss-security/2026/02/24/1