UBUNTU-CVE-2026-28372

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Source
https://ubuntu.com/security/CVE-2026-28372
Import Source
https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-28372.json
JSON Data
https://api.osv.dev/v1/vulns/UBUNTU-CVE-2026-28372
Upstream
Published
2026-02-27T06:18:00Z
Modified
2026-03-05T12:29:35Z
Severity
  • 7.4 (High) CVSS_V3 - CVSS:3.1/AV:L/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H CVSS Calculator
  • 7.8 (High) CVSS_V3 - CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H CVSS Calculator
  • Ubuntu - medium
Summary
[none]
Details

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.

References

Affected packages

Ubuntu:22.04:LTS
inetutils

Package

Name
inetutils
Purl
pkg:deb/ubuntu/inetutils@2:2.2-2ubuntu0.2?arch=source&distro=jammy

Affected ranges

Type
ECOSYSTEM
Events
Introduced
0Unknown introduced version / All previous versions are affected

Affected versions

2:2.*
2:2.0-1
2:2.2-2
2:2.2-2ubuntu0.1
2:2.2-2ubuntu0.2

Ecosystem specific 

{
    "binaries": [
        {
            "binary_name": "inetutils-ftp",
            "binary_version": "2:2.2-2ubuntu0.2"
        },
        {
            "binary_name": "inetutils-ftpd",
            "binary_version": "2:2.2-2ubuntu0.2"
        },
        {
            "binary_name": "inetutils-inetd",
            "binary_version": "2:2.2-2ubuntu0.2"
        },
        {
            "binary_name": "inetutils-ping",
            "binary_version": "2:2.2-2ubuntu0.2"
        },
        {
            "binary_name": "inetutils-syslogd",
            "binary_version": "2:2.2-2ubuntu0.2"
        },
        {
            "binary_name": "inetutils-talk",
            "binary_version": "2:2.2-2ubuntu0.2"
        },
        {
            "binary_name": "inetutils-talkd",
            "binary_version": "2:2.2-2ubuntu0.2"
        },
        {
            "binary_name": "inetutils-telnet",
            "binary_version": "2:2.2-2ubuntu0.2"
        },
        {
            "binary_name": "inetutils-telnetd",
            "binary_version": "2:2.2-2ubuntu0.2"
        },
        {
            "binary_name": "inetutils-tools",
            "binary_version": "2:2.2-2ubuntu0.2"
        },
        {
            "binary_name": "inetutils-traceroute",
            "binary_version": "2:2.2-2ubuntu0.2"
        }
    ]
}

Database specific

source 
"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-28372.json"
Ubuntu:24.04:LTS
inetutils

Package

Name
inetutils
Purl
pkg:deb/ubuntu/inetutils@2:2.5-3ubuntu4.1?arch=source&distro=noble

Affected ranges

Type
ECOSYSTEM
Events
Introduced
0Unknown introduced version / All previous versions are affected

Affected versions

2:2.*
2:2.4-2ubuntu2
2:2.4-3ubuntu1
2:2.5-3ubuntu1
2:2.5-3ubuntu3
2:2.5-3ubuntu4
2:2.5-3ubuntu4.1

Ecosystem specific 

{
    "binaries": [
        {
            "binary_name": "inetutils-ftp",
            "binary_version": "2:2.5-3ubuntu4.1"
        },
        {
            "binary_name": "inetutils-ftpd",
            "binary_version": "2:2.5-3ubuntu4.1"
        },
        {
            "binary_name": "inetutils-inetd",
            "binary_version": "2:2.5-3ubuntu4.1"
        },
        {
            "binary_name": "inetutils-ping",
            "binary_version": "2:2.5-3ubuntu4.1"
        },
        {
            "binary_name": "inetutils-syslogd",
            "binary_version": "2:2.5-3ubuntu4.1"
        },
        {
            "binary_name": "inetutils-talk",
            "binary_version": "2:2.5-3ubuntu4.1"
        },
        {
            "binary_name": "inetutils-talkd",
            "binary_version": "2:2.5-3ubuntu4.1"
        },
        {
            "binary_name": "inetutils-telnet",
            "binary_version": "2:2.5-3ubuntu4.1"
        },
        {
            "binary_name": "inetutils-telnetd",
            "binary_version": "2:2.5-3ubuntu4.1"
        },
        {
            "binary_name": "inetutils-tools",
            "binary_version": "2:2.5-3ubuntu4.1"
        },
        {
            "binary_name": "inetutils-traceroute",
            "binary_version": "2:2.5-3ubuntu4.1"
        },
        {
            "binary_name": "telnet",
            "binary_version": "0.17+2.5-3ubuntu4.1"
        },
        {
            "binary_name": "telnetd",
            "binary_version": "0.17+2.5-3ubuntu4.1"
        }
    ]
}

Database specific

source 
"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-28372.json"
Ubuntu:25.10
inetutils

Package

Name
inetutils
Purl
pkg:deb/ubuntu/inetutils@2:2.6-1ubuntu3.1?arch=source&distro=questing

Affected ranges

Type
ECOSYSTEM
Events
Introduced
0Unknown introduced version / All previous versions are affected

Affected versions

2:2.*
2:2.5-6ubuntu1
2:2.6-1ubuntu1
2:2.6-1ubuntu3
2:2.6-1ubuntu3.1

Ecosystem specific 

{
    "binaries": [
        {
            "binary_name": "inetutils-ftp",
            "binary_version": "2:2.6-1ubuntu3.1"
        },
        {
            "binary_name": "inetutils-ftpd",
            "binary_version": "2:2.6-1ubuntu3.1"
        },
        {
            "binary_name": "inetutils-inetd",
            "binary_version": "2:2.6-1ubuntu3.1"
        },
        {
            "binary_name": "inetutils-ping",
            "binary_version": "2:2.6-1ubuntu3.1"
        },
        {
            "binary_name": "inetutils-syslogd",
            "binary_version": "2:2.6-1ubuntu3.1"
        },
        {
            "binary_name": "inetutils-talk",
            "binary_version": "2:2.6-1ubuntu3.1"
        },
        {
            "binary_name": "inetutils-talkd",
            "binary_version": "2:2.6-1ubuntu3.1"
        },
        {
            "binary_name": "inetutils-telnet",
            "binary_version": "2:2.6-1ubuntu3.1"
        },
        {
            "binary_name": "inetutils-telnetd",
            "binary_version": "2:2.6-1ubuntu3.1"
        },
        {
            "binary_name": "inetutils-tools",
            "binary_version": "2:2.6-1ubuntu3.1"
        },
        {
            "binary_name": "inetutils-traceroute",
            "binary_version": "2:2.6-1ubuntu3.1"
        },
        {
            "binary_name": "telnet",
            "binary_version": "0.17+2.6-1ubuntu3.1"
        },
        {
            "binary_name": "telnetd",
            "binary_version": "0.17+2.6-1ubuntu3.1"
        }
    ]
}

Database specific

source 
"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-28372.json"
Ubuntu:Pro:14.04:LTS
inetutils

Package

Name
inetutils
Purl
pkg:deb/ubuntu/inetutils@2:1.9.2-1ubuntu0.1~esm2?arch=source&distro=esm-infra-legacy/trusty

Affected ranges

Type
ECOSYSTEM
Events
Introduced
0Unknown introduced version / All previous versions are affected

Affected versions

2:1.*
2:1.9.1.306-0a482-1
2:1.9.1.363-bbc1-1
2:1.9.2-1
2:1.9.2-1ubuntu0.1~esm1
2:1.9.2-1ubuntu0.1~esm2

Ecosystem specific 

{
    "binaries": [
        {
            "binary_name": "inetutils-ftp",
            "binary_version": "2:1.9.2-1ubuntu0.1~esm2"
        },
        {
            "binary_name": "inetutils-ftpd",
            "binary_version": "2:1.9.2-1ubuntu0.1~esm2"
        },
        {
            "binary_name": "inetutils-inetd",
            "binary_version": "2:1.9.2-1ubuntu0.1~esm2"
        },
        {
            "binary_name": "inetutils-ping",
            "binary_version": "2:1.9.2-1ubuntu0.1~esm2"
        },
        {
            "binary_name": "inetutils-syslogd",
            "binary_version": "2:1.9.2-1ubuntu0.1~esm2"
        },
        {
            "binary_name": "inetutils-talk",
            "binary_version": "2:1.9.2-1ubuntu0.1~esm2"
        },
        {
            "binary_name": "inetutils-talkd",
            "binary_version": "2:1.9.2-1ubuntu0.1~esm2"
        },
        {
            "binary_name": "inetutils-telnet",
            "binary_version": "2:1.9.2-1ubuntu0.1~esm2"
        },
        {
            "binary_name": "inetutils-telnetd",
            "binary_version": "2:1.9.2-1ubuntu0.1~esm2"
        },
        {
            "binary_name": "inetutils-tools",
            "binary_version": "2:1.9.2-1ubuntu0.1~esm2"
        },
        {
            "binary_name": "inetutils-traceroute",
            "binary_version": "2:1.9.2-1ubuntu0.1~esm2"
        }
    ]
}

Database specific

source 
"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-28372.json"
Ubuntu:Pro:16.04:LTS
inetutils

Package

Name
inetutils
Purl
pkg:deb/ubuntu/inetutils@2:1.9.4-1ubuntu0.1~esm5?arch=source&distro=esm-apps/xenial

Affected ranges

Type
ECOSYSTEM
Events
Introduced
0Unknown introduced version / All previous versions are affected

Affected versions

2:1.*
2:1.9.4-1
2:1.9.4-1build1
2:1.9.4-1ubuntu0.1~esm1
2:1.9.4-1ubuntu0.1~esm2
2:1.9.4-1ubuntu0.1~esm3
2:1.9.4-1ubuntu0.1~esm5

Ecosystem specific 

{
    "binaries": [
        {
            "binary_name": "inetutils-ftp",
            "binary_version": "2:1.9.4-1ubuntu0.1~esm5"
        },
        {
            "binary_name": "inetutils-ftpd",
            "binary_version": "2:1.9.4-1ubuntu0.1~esm5"
        },
        {
            "binary_name": "inetutils-inetd",
            "binary_version": "2:1.9.4-1ubuntu0.1~esm5"
        },
        {
            "binary_name": "inetutils-ping",
            "binary_version": "2:1.9.4-1ubuntu0.1~esm5"
        },
        {
            "binary_name": "inetutils-syslogd",
            "binary_version": "2:1.9.4-1ubuntu0.1~esm5"
        },
        {
            "binary_name": "inetutils-talk",
            "binary_version": "2:1.9.4-1ubuntu0.1~esm5"
        },
        {
            "binary_name": "inetutils-talkd",
            "binary_version": "2:1.9.4-1ubuntu0.1~esm5"
        },
        {
            "binary_name": "inetutils-telnet",
            "binary_version": "2:1.9.4-1ubuntu0.1~esm5"
        },
        {
            "binary_name": "inetutils-telnetd",
            "binary_version": "2:1.9.4-1ubuntu0.1~esm5"
        },
        {
            "binary_name": "inetutils-tools",
            "binary_version": "2:1.9.4-1ubuntu0.1~esm5"
        },
        {
            "binary_name": "inetutils-traceroute",
            "binary_version": "2:1.9.4-1ubuntu0.1~esm5"
        }
    ]
}

Database specific

source 
"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-28372.json"
Ubuntu:Pro:18.04:LTS
inetutils

Package

Name
inetutils
Purl
pkg:deb/ubuntu/inetutils@2:1.9.4-3ubuntu0.1+esm4?arch=source&distro=esm-apps/bionic

Affected ranges

Type
ECOSYSTEM
Events
Introduced
0Unknown introduced version / All previous versions are affected

Affected versions

2:1.*
2:1.9.4-2build1
2:1.9.4-3
2:1.9.4-3ubuntu0.1
2:1.9.4-3ubuntu0.1+esm1
2:1.9.4-3ubuntu0.1+esm2
2:1.9.4-3ubuntu0.1+esm4

Ecosystem specific 

{
    "binaries": [
        {
            "binary_name": "inetutils-ftp",
            "binary_version": "2:1.9.4-3ubuntu0.1+esm4"
        },
        {
            "binary_name": "inetutils-ftpd",
            "binary_version": "2:1.9.4-3ubuntu0.1+esm4"
        },
        {
            "binary_name": "inetutils-inetd",
            "binary_version": "2:1.9.4-3ubuntu0.1+esm4"
        },
        {
            "binary_name": "inetutils-ping",
            "binary_version": "2:1.9.4-3ubuntu0.1+esm4"
        },
        {
            "binary_name": "inetutils-syslogd",
            "binary_version": "2:1.9.4-3ubuntu0.1+esm4"
        },
        {
            "binary_name": "inetutils-talk",
            "binary_version": "2:1.9.4-3ubuntu0.1+esm4"
        },
        {
            "binary_name": "inetutils-talkd",
            "binary_version": "2:1.9.4-3ubuntu0.1+esm4"
        },
        {
            "binary_name": "inetutils-telnet",
            "binary_version": "2:1.9.4-3ubuntu0.1+esm4"
        },
        {
            "binary_name": "inetutils-telnetd",
            "binary_version": "2:1.9.4-3ubuntu0.1+esm4"
        },
        {
            "binary_name": "inetutils-tools",
            "binary_version": "2:1.9.4-3ubuntu0.1+esm4"
        },
        {
            "binary_name": "inetutils-traceroute",
            "binary_version": "2:1.9.4-3ubuntu0.1+esm4"
        }
    ]
}

Database specific

source 
"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-28372.json"
Ubuntu:Pro:20.04:LTS
inetutils

Package

Name
inetutils
Purl
pkg:deb/ubuntu/inetutils@2:1.9.4-11ubuntu0.2+esm3?arch=source&distro=esm-apps/focal

Affected ranges

Type
ECOSYSTEM
Events
Introduced
0Unknown introduced version / All previous versions are affected

Affected versions

2:1.*
2:1.9.4-10build1
2:1.9.4-11
2:1.9.4-11ubuntu0.1
2:1.9.4-11ubuntu0.1+esm1
2:1.9.4-11ubuntu0.2
2:1.9.4-11ubuntu0.2+esm1
2:1.9.4-11ubuntu0.2+esm3

Ecosystem specific 

{
    "binaries": [
        {
            "binary_name": "inetutils-ftp",
            "binary_version": "2:1.9.4-11ubuntu0.2+esm3"
        },
        {
            "binary_name": "inetutils-ftpd",
            "binary_version": "2:1.9.4-11ubuntu0.2+esm3"
        },
        {
            "binary_name": "inetutils-inetd",
            "binary_version": "2:1.9.4-11ubuntu0.2+esm3"
        },
        {
            "binary_name": "inetutils-ping",
            "binary_version": "2:1.9.4-11ubuntu0.2+esm3"
        },
        {
            "binary_name": "inetutils-syslogd",
            "binary_version": "2:1.9.4-11ubuntu0.2+esm3"
        },
        {
            "binary_name": "inetutils-talk",
            "binary_version": "2:1.9.4-11ubuntu0.2+esm3"
        },
        {
            "binary_name": "inetutils-talkd",
            "binary_version": "2:1.9.4-11ubuntu0.2+esm3"
        },
        {
            "binary_name": "inetutils-telnet",
            "binary_version": "2:1.9.4-11ubuntu0.2+esm3"
        },
        {
            "binary_name": "inetutils-telnetd",
            "binary_version": "2:1.9.4-11ubuntu0.2+esm3"
        },
        {
            "binary_name": "inetutils-tools",
            "binary_version": "2:1.9.4-11ubuntu0.2+esm3"
        },
        {
            "binary_name": "inetutils-traceroute",
            "binary_version": "2:1.9.4-11ubuntu0.2+esm3"
        }
    ]
}

Database specific

source 
"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-28372.json"