CVE-2026-28372

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 v3 7.4 HIGH

7.4^/10

CVSS v3 : HIGH

Vector :

Exploitability : 1.4 / Impact : 5.9

Attack Vector LOCAL

Attack Complexity HIGH

Privileges Required NONE

User Interaction NONE

Confidentiality Impact HIGH

Integrity Impact HIGH

Availability Impact HIGH

Scope UNCHANGED

References

Link	Resource
https://git.hadrons.org/cgit/debian/pkgs/inetutils.git/commit/?id=3953943d8296310485f98963883a798545ab9a6c	Patch
https://lists.gnu.org/archive/html/bug-inetutils/2026-02/msg00000.html	Exploit Mailing List Third Party Advisory
https://lists.gnu.org/archive/html/bug-inetutils/2026-02/msg00012.html	Mailing List Third Party Advisory
https://www.openwall.com/lists/oss-security/2026/02/24/1	Mailing List Third Party Advisory
http://www.openwall.com/lists/oss-security/2026/02/27/3	Mailing 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

Configurations

Configuration 1 (hide)

cpe:2.3:a:gnu:inetutils:*:*:*:*:*:*:*:*

History

No history.

Information

Published : 2026-02-27 06:18

Updated : 2026-03-07 17:15

NVD link : CVE-2026-28372

Mitre link : CVE-2026-28372

CVE.ORG link : CVE-2026-28372

JSON object : View

Products Affected

gnu

inetutils

CWE

CWE-829

Inclusion of Functionality from Untrusted Control Sphere

{"id": "CVE-2026-28372", "cveTags": [], "metrics": {"cvssMetricV31": [{"type": "Secondary", "source": "cve@mitre.org", "cvssData": {"scope": "UNCHANGED", "version": "3.1", "baseScore": 7.4, "attackVector": "LOCAL", "baseSeverity": "HIGH", "vectorString": "CVSS:3.1/AV:L/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H", "integrityImpact": "HIGH", "userInteraction": "NONE", "attackComplexity": "HIGH", "availabilityImpact": "HIGH", "privilegesRequired": "NONE", "confidentialityImpact": "HIGH"}, "impactScore": 5.9, "exploitabilityScore": 1.4}, {"type": "Primary", "source": "nvd@nist.gov", "cvssData": {"scope": "UNCHANGED", "version": "3.1", "baseScore": 7.8, "attackVector": "LOCAL", "baseSeverity": "HIGH", "vectorString": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H", "integrityImpact": "HIGH", "userInteraction": "NONE", "attackComplexity": "LOW", "availabilityImpact": "HIGH", "privilegesRequired": "LOW", "confidentialityImpact": "HIGH"}, "impactScore": 5.9, "exploitabilityScore": 1.8}]}, "published": "2026-02-27T06:18:00.077", "references": [{"url": "https://git.hadrons.org/cgit/debian/pkgs/inetutils.git/commit/?id=3953943d8296310485f98963883a798545ab9a6c", "tags": ["Patch"], "source": "cve@mitre.org"}, {"url": "https://lists.gnu.org/archive/html/bug-inetutils/2026-02/msg00000.html", "tags": ["Exploit", "Mailing List", "Third Party Advisory"], "source": "cve@mitre.org"}, {"url": "https://lists.gnu.org/archive/html/bug-inetutils/2026-02/msg00012.html", "tags": ["Mailing List", "Third Party Advisory"], "source": "cve@mitre.org"}, {"url": "https://www.openwall.com/lists/oss-security/2026/02/24/1", "tags": ["Mailing List", "Third Party Advisory"], "source": "cve@mitre.org"}, {"url": "http://www.openwall.com/lists/oss-security/2026/02/27/3", "tags": ["Mailing List", "Third Party Advisory"], "source": "af854a3a-2127-422b-91ae-364da2661108"}, {"url": "http://www.openwall.com/lists/oss-security/2026/03/06/2", "source": "af854a3a-2127-422b-91ae-364da2661108"}, {"url": "http://www.openwall.com/lists/oss-security/2026/03/06/3", "source": "af854a3a-2127-422b-91ae-364da2661108"}, {"url": "http://www.openwall.com/lists/oss-security/2026/03/07/1", "source": "af854a3a-2127-422b-91ae-364da2661108"}, {"url": "http://www.openwall.com/lists/oss-security/2026/03/07/2", "source": "af854a3a-2127-422b-91ae-364da2661108"}], "vulnStatus": "Modified", "weaknesses": [{"type": "Secondary", "source": "cve@mitre.org", "description": [{"lang": "en", "value": "CWE-829"}]}], "descriptions": [{"lang": "en", "value": "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."}, {"lang": "es", "value": "telnetd en GNU inetutils hasta la versi\u00f3n 2.7 permite la escalada de privilegios que puede ser explotada al abusar del soporte de credenciales de servicio de systemd a\u00f1adido a la implementaci\u00f3n de login(1) de util-linux en la versi\u00f3n 2.40. Esto est\u00e1 relacionado con el control del cliente sobre la variable de entorno CREDENTIALS_DIRECTORY, y requiere que un usuario local sin privilegios cree un archivo login.noauth."}], "lastModified": "2026-03-07T17:15:51.663", "configurations": [{"nodes": [{"negate": false, "cpeMatch": [{"criteria": "cpe:2.3:a:gnu:inetutils:*:*:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "6381CFAE-9A10-40ED-BC93-1DB55CB44327", "versionEndIncluding": "2.7"}], "operator": "OR"}]}], "sourceIdentifier": "cve@mitre.org"}