UBUNTU-CVE-2026-24061

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Source
https://ubuntu.com/security/CVE-2026-24061
Import Source
https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-24061.json
JSON Data
https://api.osv.dev/v1/vulns/UBUNTU-CVE-2026-24061
Upstream
Downstream
Related
Published
2026-01-21T07:16:00Z
Modified
2026-02-19T20:29:26.959280Z
Severity
  • 9.8 (Critical) CVSS_V3 - CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H CVSS Calculator
  • Ubuntu - high
Summary
[none]
Details

telnetd in GNU Inetutils through 2.7 allows remote authentication bypass via a "-f root" value for the USER environment variable.

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
Fixed
2:2.2-2ubuntu0.2

Affected versions

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

Ecosystem specific 

{
    "priority_reason": "remote auth bypass",
    "availability": "No subscription required",
    "binaries": [
        {
            "binary_version": "2:2.2-2ubuntu0.2",
            "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"
        }
    ]
}

Database specific

source 
"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-24061.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
Fixed
2:2.5-3ubuntu4.1

Affected versions

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

Ecosystem specific 

{
    "priority_reason": "remote auth bypass",
    "availability": "No subscription required",
    "binaries": [
        {
            "binary_version": "2:2.5-3ubuntu4.1",
            "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": "0.17+2.5-3ubuntu4.1",
            "binary_name": "telnet"
        },
        {
            "binary_version": "0.17+2.5-3ubuntu4.1",
            "binary_name": "telnetd"
        }
    ]
}

Database specific

source 
"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-24061.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
Fixed
2:2.6-1ubuntu3.1

Affected versions

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

Ecosystem specific 

{
    "priority_reason": "remote auth bypass",
    "availability": "No subscription required",
    "binaries": [
        {
            "binary_version": "2:2.6-1ubuntu3.1",
            "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": "0.17+2.6-1ubuntu3.1",
            "binary_name": "telnet"
        },
        {
            "binary_version": "0.17+2.6-1ubuntu3.1",
            "binary_name": "telnetd"
        }
    ]
}

Database specific

source 
"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-24061.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
Fixed
2:1.9.4-1ubuntu0.1~esm5

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

Ecosystem specific 

{
    "priority_reason": "remote auth bypass",
    "availability": "Available with Ubuntu Pro: https://ubuntu.com/pro",
    "binaries": [
        {
            "binary_version": "2:1.9.4-1ubuntu0.1~esm5",
            "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"
        }
    ]
}

Database specific

source 
"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-24061.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
Fixed
2:1.9.4-3ubuntu0.1+esm4

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

Ecosystem specific 

{
    "priority_reason": "remote auth bypass",
    "availability": "Available with Ubuntu Pro: https://ubuntu.com/pro",
    "binaries": [
        {
            "binary_version": "2:1.9.4-3ubuntu0.1+esm4",
            "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"
        }
    ]
}

Database specific

source 
"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-24061.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
Fixed
2:1.9.4-11ubuntu0.2+esm3

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

Ecosystem specific 

{
    "priority_reason": "remote auth bypass",
    "availability": "Available with Ubuntu Pro: https://ubuntu.com/pro",
    "binaries": [
        {
            "binary_version": "2:1.9.4-11ubuntu0.2+esm3",
            "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"
        }
    ]
}

Database specific

source 
"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-24061.json"