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.
Metrics
CVSS 3.1 7.8/10
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:HWeakness enumeration
Affected software
| Vendor | Product | Versions |
|---|---|---|
| GNU | inetutils | <= 2.7 |
References
- https://git.hadrons.org/cgit/debian/pkgs/inetutils.git/commit/?id=3953943d8296310485f98963883a798545ab9a6cPatch
- https://lists.gnu.org/archive/html/bug-inetutils/2026-02/msg00000.htmlExploit, Mailing List, Third Party Advisory
- https://lists.gnu.org/archive/html/bug-inetutils/2026-02/msg00012.htmlMailing List, Third Party Advisory
- https://www.openwall.com/lists/oss-security/2026/02/24/1Mailing List, Third Party Advisory
- http://www.openwall.com/lists/oss-security/2026/02/27/3Mailing List, Third Party Advisory
- http://www.openwall.com/lists/oss-security/2026/03/06/2
- http://www.openwall.com/lists/oss-security/2026/03/06/3
- http://www.openwall.com/lists/oss-security/2026/03/07/1
- http://www.openwall.com/lists/oss-security/2026/03/07/2
Timeline
- Published
- Feb 27, 2026
- Last modified
- Jun 17, 2026
- NVD status
- Modified