UBUNTU-CVE-2026-4408

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Source
https://ubuntu.com/security/CVE-2026-4408
Import Source
https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-4408.json
JSON Data
https://api.osv.dev/v1/vulns/UBUNTU-CVE-2026-4408
Upstream
  • CVE-2026-4408
Downstream
Related
Published
2026-05-26T00:00:00Z
Modified
2026-06-09T21:19:12.982107556Z
Severity
  • 9.0 (Critical) CVSS_V3 - CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:C/C:H/I:H/A:H CVSS Calculator
  • 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 - medium
Summary
[none]
Details

A flaw was found in Samba. A remote attacker can exploit a misconfiguration in Samba file servers and classic domain controllers that use the "check password script" feature. If this script is configured with the %u substitution character, the client-controlled username is passed without proper escaping of shell meta-characters. This vulnerability allows an attacker to achieve remote command execution on the affected system. This issue primarily affects non-standard configurations where the "check password script" is used with %u and the samba-dcerpcd service is started as a system service.

References

Affected packages

Ubuntu:22.04:LTS
samba

Package

Name
samba
Purl
pkg:deb/ubuntu/samba?arch=source&distro=jammy

Affected ranges

Type
ECOSYSTEM
Events
Introduced
0Unknown introduced version / All previous versions are affected
Fixed
2:4.15.13+dfsg-0ubuntu1.12

Affected versions

2:4.*
2:4.13.5+dfsg-2ubuntu2
2:4.13.5+dfsg-2ubuntu3
2:4.13.14+dfsg-0ubuntu1
2:4.13.14+dfsg-0ubuntu2
2:4.15.5~dfsg-0ubuntu1
2:4.15.5~dfsg-0ubuntu2
2:4.15.5~dfsg-0ubuntu4
2:4.15.5~dfsg-0ubuntu5
2:4.15.5~dfsg-0ubuntu5.1
2:4.15.9+dfsg-0ubuntu0.2
2:4.15.9+dfsg-0ubuntu0.3
2:4.15.13+dfsg-0ubuntu1
2:4.15.13+dfsg-0ubuntu1.1
2:4.15.13+dfsg-0ubuntu1.2
2:4.15.13+dfsg-0ubuntu1.3
2:4.15.13+dfsg-0ubuntu1.4
2:4.15.13+dfsg-0ubuntu1.5
2:4.15.13+dfsg-0ubuntu1.6
2:4.15.13+dfsg-0ubuntu1.7
2:4.15.13+dfsg-0ubuntu1.8
2:4.15.13+dfsg-0ubuntu1.9
2:4.15.13+dfsg-0ubuntu1.10

Ecosystem specific 

{
    "availability": "No subscription required",
    "binaries": [
        {
            "binary_name": "ctdb",
            "binary_version": "2:4.15.13+dfsg-0ubuntu1.12"
        },
        {
            "binary_name": "libnss-winbind",
            "binary_version": "2:4.15.13+dfsg-0ubuntu1.12"
        },
        {
            "binary_name": "libpam-winbind",
            "binary_version": "2:4.15.13+dfsg-0ubuntu1.12"
        },
        {
            "binary_name": "libsmbclient",
            "binary_version": "2:4.15.13+dfsg-0ubuntu1.12"
        },
        {
            "binary_name": "libwbclient0",
            "binary_version": "2:4.15.13+dfsg-0ubuntu1.12"
        },
        {
            "binary_name": "python3-samba",
            "binary_version": "2:4.15.13+dfsg-0ubuntu1.12"
        },
        {
            "binary_name": "registry-tools",
            "binary_version": "2:4.15.13+dfsg-0ubuntu1.12"
        },
        {
            "binary_name": "samba",
            "binary_version": "2:4.15.13+dfsg-0ubuntu1.12"
        },
        {
            "binary_name": "samba-common",
            "binary_version": "2:4.15.13+dfsg-0ubuntu1.12"
        },
        {
            "binary_name": "samba-common-bin",
            "binary_version": "2:4.15.13+dfsg-0ubuntu1.12"
        },
        {
            "binary_name": "samba-dsdb-modules",
            "binary_version": "2:4.15.13+dfsg-0ubuntu1.12"
        },
        {
            "binary_name": "samba-libs",
            "binary_version": "2:4.15.13+dfsg-0ubuntu1.12"
        },
        {
            "binary_name": "samba-testsuite",
            "binary_version": "2:4.15.13+dfsg-0ubuntu1.12"
        },
        {
            "binary_name": "samba-vfs-modules",
            "binary_version": "2:4.15.13+dfsg-0ubuntu1.12"
        },
        {
            "binary_name": "smbclient",
            "binary_version": "2:4.15.13+dfsg-0ubuntu1.12"
        },
        {
            "binary_name": "winbind",
            "binary_version": "2:4.15.13+dfsg-0ubuntu1.12"
        }
    ]
}

Database specific

source 
"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-4408.json"
Ubuntu:24.04:LTS
samba

Package

Name
samba
Purl
pkg:deb/ubuntu/samba?arch=source&distro=noble

Affected ranges

Type
ECOSYSTEM
Events
Introduced
0Unknown introduced version / All previous versions are affected
Fixed
2:4.19.5+dfsg-4ubuntu9.6

Affected versions

2:4.*
2:4.18.6+dfsg-1ubuntu2
2:4.18.6+dfsg-1ubuntu2.1
2:4.18.6+dfsg-1ubuntu2.2
2:4.19.4+dfsg-3ubuntu1
2:4.19.5+dfsg-1ubuntu1
2:4.19.5+dfsg-4ubuntu7
2:4.19.5+dfsg-4ubuntu8
2:4.19.5+dfsg-4ubuntu9
2:4.19.5+dfsg-4ubuntu9.2
2:4.19.5+dfsg-4ubuntu9.3
2:4.19.5+dfsg-4ubuntu9.4

Ecosystem specific 

{
    "availability": "No subscription required",
    "binaries": [
        {
            "binary_name": "ctdb",
            "binary_version": "2:4.19.5+dfsg-4ubuntu9.6"
        },
        {
            "binary_name": "ldb-tools",
            "binary_version": "2:2.8.0+samba4.19.5+dfsg-4ubuntu9.6"
        },
        {
            "binary_name": "libldb2",
            "binary_version": "2:2.8.0+samba4.19.5+dfsg-4ubuntu9.6"
        },
        {
            "binary_name": "libnss-winbind",
            "binary_version": "2:4.19.5+dfsg-4ubuntu9.6"
        },
        {
            "binary_name": "libpam-winbind",
            "binary_version": "2:4.19.5+dfsg-4ubuntu9.6"
        },
        {
            "binary_name": "libsmbclient0",
            "binary_version": "2:4.19.5+dfsg-4ubuntu9.6"
        },
        {
            "binary_name": "libwbclient0",
            "binary_version": "2:4.19.5+dfsg-4ubuntu9.6"
        },
        {
            "binary_name": "python3-ldb",
            "binary_version": "2:2.8.0+samba4.19.5+dfsg-4ubuntu9.6"
        },
        {
            "binary_name": "python3-samba",
            "binary_version": "2:4.19.5+dfsg-4ubuntu9.6"
        },
        {
            "binary_name": "registry-tools",
            "binary_version": "2:4.19.5+dfsg-4ubuntu9.6"
        },
        {
            "binary_name": "samba",
            "binary_version": "2:4.19.5+dfsg-4ubuntu9.6"
        },
        {
            "binary_name": "samba-ad-dc",
            "binary_version": "2:4.19.5+dfsg-4ubuntu9.6"
        },
        {
            "binary_name": "samba-ad-provision",
            "binary_version": "2:4.19.5+dfsg-4ubuntu9.6"
        },
        {
            "binary_name": "samba-common",
            "binary_version": "2:4.19.5+dfsg-4ubuntu9.6"
        },
        {
            "binary_name": "samba-common-bin",
            "binary_version": "2:4.19.5+dfsg-4ubuntu9.6"
        },
        {
            "binary_name": "samba-dsdb-modules",
            "binary_version": "2:4.19.5+dfsg-4ubuntu9.6"
        },
        {
            "binary_name": "samba-libs",
            "binary_version": "2:4.19.5+dfsg-4ubuntu9.6"
        },
        {
            "binary_name": "samba-testsuite",
            "binary_version": "2:4.19.5+dfsg-4ubuntu9.6"
        },
        {
            "binary_name": "samba-vfs-modules",
            "binary_version": "2:4.19.5+dfsg-4ubuntu9.6"
        },
        {
            "binary_name": "samba-vfs-modules-extra",
            "binary_version": "2:4.19.5+dfsg-4ubuntu9.6"
        },
        {
            "binary_name": "smbclient",
            "binary_version": "2:4.19.5+dfsg-4ubuntu9.6"
        },
        {
            "binary_name": "winbind",
            "binary_version": "2:4.19.5+dfsg-4ubuntu9.6"
        }
    ]
}

Database specific

source 
"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-4408.json"
Ubuntu:25.10
samba

Package

Name
samba
Purl
pkg:deb/ubuntu/samba?arch=source&distro=questing

Affected ranges

Type
ECOSYSTEM
Events
Introduced
0Unknown introduced version / All previous versions are affected
Fixed
2:4.22.3+dfsg-4ubuntu2.4

Affected versions

2:4.*
2:4.21.4+dfsg-1ubuntu3
2:4.21.4+dfsg-1ubuntu4
2:4.21.4+dfsg-1ubuntu5
2:4.22.2+dfsg-1ubuntu1
2:4.22.3+dfsg-4ubuntu1
2:4.22.3+dfsg-4ubuntu2
2:4.22.3+dfsg-4ubuntu2.1
2:4.22.3+dfsg-4ubuntu2.2

Ecosystem specific 

{
    "availability": "No subscription required",
    "binaries": [
        {
            "binary_name": "ctdb",
            "binary_version": "2:4.22.3+dfsg-4ubuntu2.4"
        },
        {
            "binary_name": "ldb-tools",
            "binary_version": "2:2.11.0+samba4.22.3+dfsg-4ubuntu2.4"
        },
        {
            "binary_name": "libldb2",
            "binary_version": "2:2.11.0+samba4.22.3+dfsg-4ubuntu2.4"
        },
        {
            "binary_name": "libnss-winbind",
            "binary_version": "2:4.22.3+dfsg-4ubuntu2.4"
        },
        {
            "binary_name": "libpam-winbind",
            "binary_version": "2:4.22.3+dfsg-4ubuntu2.4"
        },
        {
            "binary_name": "libsmbclient0",
            "binary_version": "2:4.22.3+dfsg-4ubuntu2.4"
        },
        {
            "binary_name": "libtalloc2",
            "binary_version": "2:2.4.3+samba4.22.3+dfsg-4ubuntu2.4"
        },
        {
            "binary_name": "libtdb1",
            "binary_version": "2:1.4.13+samba4.22.3+dfsg-4ubuntu2.4"
        },
        {
            "binary_name": "libtevent0t64",
            "binary_version": "2:0.16.2+samba4.22.3+dfsg-4ubuntu2.4"
        },
        {
            "binary_name": "libwbclient0",
            "binary_version": "2:4.22.3+dfsg-4ubuntu2.4"
        },
        {
            "binary_name": "python3-ldb",
            "binary_version": "2:2.11.0+samba4.22.3+dfsg-4ubuntu2.4"
        },
        {
            "binary_name": "python3-samba",
            "binary_version": "2:4.22.3+dfsg-4ubuntu2.4"
        },
        {
            "binary_name": "python3-talloc",
            "binary_version": "2:2.4.3+samba4.22.3+dfsg-4ubuntu2.4"
        },
        {
            "binary_name": "python3-tdb",
            "binary_version": "2:1.4.13+samba4.22.3+dfsg-4ubuntu2.4"
        },
        {
            "binary_name": "registry-tools",
            "binary_version": "2:4.22.3+dfsg-4ubuntu2.4"
        },
        {
            "binary_name": "samba",
            "binary_version": "2:4.22.3+dfsg-4ubuntu2.4"
        },
        {
            "binary_name": "samba-ad-dc",
            "binary_version": "2:4.22.3+dfsg-4ubuntu2.4"
        },
        {
            "binary_name": "samba-ad-provision",
            "binary_version": "2:4.22.3+dfsg-4ubuntu2.4"
        },
        {
            "binary_name": "samba-common",
            "binary_version": "2:4.22.3+dfsg-4ubuntu2.4"
        },
        {
            "binary_name": "samba-common-bin",
            "binary_version": "2:4.22.3+dfsg-4ubuntu2.4"
        },
        {
            "binary_name": "samba-dsdb-modules",
            "binary_version": "2:4.22.3+dfsg-4ubuntu2.4"
        },
        {
            "binary_name": "samba-libs",
            "binary_version": "2:4.22.3+dfsg-4ubuntu2.4"
        },
        {
            "binary_name": "samba-testsuite",
            "binary_version": "2:4.22.3+dfsg-4ubuntu2.4"
        },
        {
            "binary_name": "samba-vfs-ceph",
            "binary_version": "2:4.22.3+dfsg-4ubuntu2.4"
        },
        {
            "binary_name": "samba-vfs-glusterfs",
            "binary_version": "2:4.22.3+dfsg-4ubuntu2.4"
        },
        {
            "binary_name": "samba-vfs-modules",
            "binary_version": "2:4.22.3+dfsg-4ubuntu2.4"
        },
        {
            "binary_name": "samba-vfs-modules-extra",
            "binary_version": "2:4.22.3+dfsg-4ubuntu2.4"
        },
        {
            "binary_name": "smbclient",
            "binary_version": "2:4.22.3+dfsg-4ubuntu2.4"
        },
        {
            "binary_name": "tdb-tools",
            "binary_version": "2:1.4.13+samba4.22.3+dfsg-4ubuntu2.4"
        },
        {
            "binary_name": "winbind",
            "binary_version": "2:4.22.3+dfsg-4ubuntu2.4"
        }
    ]
}

Database specific

source 
"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-4408.json"
Ubuntu:26.04:LTS
samba

Package

Name
samba
Purl
pkg:deb/ubuntu/samba?arch=source&distro=resolute

Affected ranges

Type
ECOSYSTEM
Events
Introduced
0Unknown introduced version / All previous versions are affected
Fixed
2:4.23.6+dfsg-1ubuntu2.1

Affected versions

2:4.*
2:4.22.3+dfsg-4ubuntu2
2:4.22.3+dfsg-4ubuntu2.1
2:4.22.3+dfsg-4ubuntu3
2:4.22.3+dfsg-4ubuntu4
2:4.23.4+dfsg-1ubuntu1
2:4.23.5+dfsg-1ubuntu2
2:4.23.6+dfsg-1ubuntu1
2:4.23.6+dfsg-1ubuntu2

Ecosystem specific 

{
    "availability": "No subscription required",
    "binaries": [
        {
            "binary_name": "ctdb",
            "binary_version": "2:4.23.6+dfsg-1ubuntu2.1"
        },
        {
            "binary_name": "ldb-tools",
            "binary_version": "2:2.11.0+samba4.23.6+dfsg-1ubuntu2.1"
        },
        {
            "binary_name": "libldb2",
            "binary_version": "2:2.11.0+samba4.23.6+dfsg-1ubuntu2.1"
        },
        {
            "binary_name": "libnss-winbind",
            "binary_version": "2:4.23.6+dfsg-1ubuntu2.1"
        },
        {
            "binary_name": "libpam-winbind",
            "binary_version": "2:4.23.6+dfsg-1ubuntu2.1"
        },
        {
            "binary_name": "libsmbclient0",
            "binary_version": "2:4.23.6+dfsg-1ubuntu2.1"
        },
        {
            "binary_name": "libtalloc2",
            "binary_version": "2:2.4.3+samba4.23.6+dfsg-1ubuntu2.1"
        },
        {
            "binary_name": "libtdb1",
            "binary_version": "2:1.4.14+samba4.23.6+dfsg-1ubuntu2.1"
        },
        {
            "binary_name": "libtevent0t64",
            "binary_version": "2:0.17.1+samba4.23.6+dfsg-1ubuntu2.1"
        },
        {
            "binary_name": "libwbclient0",
            "binary_version": "2:4.23.6+dfsg-1ubuntu2.1"
        },
        {
            "binary_name": "python3-ldb",
            "binary_version": "2:2.11.0+samba4.23.6+dfsg-1ubuntu2.1"
        },
        {
            "binary_name": "python3-samba",
            "binary_version": "2:4.23.6+dfsg-1ubuntu2.1"
        },
        {
            "binary_name": "python3-talloc",
            "binary_version": "2:2.4.3+samba4.23.6+dfsg-1ubuntu2.1"
        },
        {
            "binary_name": "python3-tdb",
            "binary_version": "2:1.4.14+samba4.23.6+dfsg-1ubuntu2.1"
        },
        {
            "binary_name": "registry-tools",
            "binary_version": "2:4.23.6+dfsg-1ubuntu2.1"
        },
        {
            "binary_name": "samba",
            "binary_version": "2:4.23.6+dfsg-1ubuntu2.1"
        },
        {
            "binary_name": "samba-ad-dc",
            "binary_version": "2:4.23.6+dfsg-1ubuntu2.1"
        },
        {
            "binary_name": "samba-ad-provision",
            "binary_version": "2:4.23.6+dfsg-1ubuntu2.1"
        },
        {
            "binary_name": "samba-common",
            "binary_version": "2:4.23.6+dfsg-1ubuntu2.1"
        },
        {
            "binary_name": "samba-common-bin",
            "binary_version": "2:4.23.6+dfsg-1ubuntu2.1"
        },
        {
            "binary_name": "samba-dsdb-modules",
            "binary_version": "2:4.23.6+dfsg-1ubuntu2.1"
        },
        {
            "binary_name": "samba-libs",
            "binary_version": "2:4.23.6+dfsg-1ubuntu2.1"
        },
        {
            "binary_name": "samba-testsuite",
            "binary_version": "2:4.23.6+dfsg-1ubuntu2.1"
        },
        {
            "binary_name": "samba-vfs-ceph",
            "binary_version": "2:4.23.6+dfsg-1ubuntu2.1"
        },
        {
            "binary_name": "samba-vfs-glusterfs",
            "binary_version": "2:4.23.6+dfsg-1ubuntu2.1"
        },
        {
            "binary_name": "samba-vfs-modules",
            "binary_version": "2:4.23.6+dfsg-1ubuntu2.1"
        },
        {
            "binary_name": "samba-vfs-modules-extra",
            "binary_version": "2:4.23.6+dfsg-1ubuntu2.1"
        },
        {
            "binary_name": "smbclient",
            "binary_version": "2:4.23.6+dfsg-1ubuntu2.1"
        },
        {
            "binary_name": "tdb-tools",
            "binary_version": "2:1.4.14+samba4.23.6+dfsg-1ubuntu2.1"
        },
        {
            "binary_name": "winbind",
            "binary_version": "2:4.23.6+dfsg-1ubuntu2.1"
        }
    ]
}

Database specific

source 
"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-4408.json"
Ubuntu:Pro:14.04:LTS
samba

Package

Name
samba
Purl
pkg:deb/ubuntu/samba?arch=source&distro=esm-infra-legacy%2Ftrusty

Affected ranges

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

Affected versions

2:3.*
2:3.6.18-1ubuntu3
2:4.*
2:4.0.10+dfsg-4ubuntu2
2:4.0.13+dfsg-1ubuntu1
2:4.1.3+dfsg-2ubuntu2
2:4.1.3+dfsg-2ubuntu3
2:4.1.3+dfsg-2ubuntu4
2:4.1.3+dfsg-2ubuntu5
2:4.1.6+dfsg-1ubuntu1
2:4.1.6+dfsg-1ubuntu2
2:4.1.6+dfsg-1ubuntu2.14.04.1
2:4.1.6+dfsg-1ubuntu2.14.04.2
2:4.1.6+dfsg-1ubuntu2.14.04.3
2:4.1.6+dfsg-1ubuntu2.14.04.4
2:4.1.6+dfsg-1ubuntu2.14.04.5
2:4.1.6+dfsg-1ubuntu2.14.04.7
2:4.1.6+dfsg-1ubuntu2.14.04.8
2:4.1.6+dfsg-1ubuntu2.14.04.9
2:4.1.6+dfsg-1ubuntu2.14.04.11
2:4.1.6+dfsg-1ubuntu2.14.04.12
2:4.1.6+dfsg-1ubuntu2.14.04.13
2:4.3.8+dfsg-0ubuntu0.14.04.2
2:4.3.9+dfsg-0ubuntu0.14.04.1
2:4.3.9+dfsg-0ubuntu0.14.04.3
2:4.3.11+dfsg-0ubuntu0.14.04.1
2:4.3.11+dfsg-0ubuntu0.14.04.2
2:4.3.11+dfsg-0ubuntu0.14.04.3
2:4.3.11+dfsg-0ubuntu0.14.04.4
2:4.3.11+dfsg-0ubuntu0.14.04.6
2:4.3.11+dfsg-0ubuntu0.14.04.7
2:4.3.11+dfsg-0ubuntu0.14.04.8
2:4.3.11+dfsg-0ubuntu0.14.04.9
2:4.3.11+dfsg-0ubuntu0.14.04.10
2:4.3.11+dfsg-0ubuntu0.14.04.11
2:4.3.11+dfsg-0ubuntu0.14.04.12
2:4.3.11+dfsg-0ubuntu0.14.04.13
2:4.3.11+dfsg-0ubuntu0.14.04.14
2:4.3.11+dfsg-0ubuntu0.14.04.16
2:4.3.11+dfsg-0ubuntu0.14.04.17
2:4.3.11+dfsg-0ubuntu0.14.04.19
2:4.3.11+dfsg-0ubuntu0.14.04.20
2:4.3.11+dfsg-0ubuntu0.14.04.20+esm1
2:4.3.11+dfsg-0ubuntu0.14.04.20+esm2
2:4.3.11+dfsg-0ubuntu0.14.04.20+esm3
2:4.3.11+dfsg-0ubuntu0.14.04.20+esm4
2:4.3.11+dfsg-0ubuntu0.14.04.20+esm6
2:4.3.11+dfsg-0ubuntu0.14.04.20+esm7
2:4.3.11+dfsg-0ubuntu0.14.04.20+esm8
2:4.3.11+dfsg-0ubuntu0.14.04.20+esm9
2:4.3.11+dfsg-0ubuntu0.14.04.20+esm11
2:4.3.11+dfsg-0ubuntu0.14.04.20+esm12
2:4.3.11+dfsg-0ubuntu0.14.04.20+esm13
2:4.3.11+dfsg-0ubuntu0.14.04.20+esm14
2:4.3.11+dfsg-0ubuntu0.14.04.20+esm15

Ecosystem specific 

{
    "binaries": [
        {
            "binary_name": "libnss-winbind",
            "binary_version": "2:4.3.11+dfsg-0ubuntu0.14.04.20+esm15"
        },
        {
            "binary_name": "libpam-smbpass",
            "binary_version": "2:4.3.11+dfsg-0ubuntu0.14.04.20+esm15"
        },
        {
            "binary_name": "libpam-winbind",
            "binary_version": "2:4.3.11+dfsg-0ubuntu0.14.04.20+esm15"
        },
        {
            "binary_name": "libparse-pidl-perl",
            "binary_version": "2:4.3.11+dfsg-0ubuntu0.14.04.20+esm15"
        },
        {
            "binary_name": "libsmbclient",
            "binary_version": "2:4.3.11+dfsg-0ubuntu0.14.04.20+esm15"
        },
        {
            "binary_name": "libsmbsharemodes0",
            "binary_version": "2:4.3.11+dfsg-0ubuntu0.14.04.20+esm15"
        },
        {
            "binary_name": "libwbclient0",
            "binary_version": "2:4.3.11+dfsg-0ubuntu0.14.04.20+esm15"
        },
        {
            "binary_name": "python-samba",
            "binary_version": "2:4.3.11+dfsg-0ubuntu0.14.04.20+esm15"
        },
        {
            "binary_name": "registry-tools",
            "binary_version": "2:4.3.11+dfsg-0ubuntu0.14.04.20+esm15"
        },
        {
            "binary_name": "samba",
            "binary_version": "2:4.3.11+dfsg-0ubuntu0.14.04.20+esm15"
        },
        {
            "binary_name": "samba-common",
            "binary_version": "2:4.3.11+dfsg-0ubuntu0.14.04.20+esm15"
        },
        {
            "binary_name": "samba-common-bin",
            "binary_version": "2:4.3.11+dfsg-0ubuntu0.14.04.20+esm15"
        },
        {
            "binary_name": "samba-dsdb-modules",
            "binary_version": "2:4.3.11+dfsg-0ubuntu0.14.04.20+esm15"
        },
        {
            "binary_name": "samba-libs",
            "binary_version": "2:4.3.11+dfsg-0ubuntu0.14.04.20+esm15"
        },
        {
            "binary_name": "samba-testsuite",
            "binary_version": "2:4.3.11+dfsg-0ubuntu0.14.04.20+esm15"
        },
        {
            "binary_name": "samba-vfs-modules",
            "binary_version": "2:4.3.11+dfsg-0ubuntu0.14.04.20+esm15"
        },
        {
            "binary_name": "smbclient",
            "binary_version": "2:4.3.11+dfsg-0ubuntu0.14.04.20+esm15"
        },
        {
            "binary_name": "winbind",
            "binary_version": "2:4.3.11+dfsg-0ubuntu0.14.04.20+esm15"
        }
    ]
}

Database specific

source 
"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-4408.json"
Ubuntu:Pro:16.04:LTS
samba

Package

Name
samba
Purl
pkg:deb/ubuntu/samba?arch=source&distro=esm-infra%2Fxenial

Affected ranges

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

Affected versions

2:4.*
2:4.1.17+dfsg-4ubuntu2
2:4.1.20+dfsg-1ubuntu1
2:4.1.20+dfsg-1ubuntu2
2:4.1.20+dfsg-1ubuntu3
2:4.1.20+dfsg-1ubuntu5
2:4.3.3+dfsg-1ubuntu1
2:4.3.3+dfsg-1ubuntu2
2:4.3.3+dfsg-1ubuntu3
2:4.3.6+dfsg-1ubuntu1
2:4.3.8+dfsg-0ubuntu1
2:4.3.9+dfsg-0ubuntu0.16.04.1
2:4.3.9+dfsg-0ubuntu0.16.04.2
2:4.3.9+dfsg-0ubuntu0.16.04.3
2:4.3.11+dfsg-0ubuntu0.16.04.1
2:4.3.11+dfsg-0ubuntu0.16.04.3
2:4.3.11+dfsg-0ubuntu0.16.04.5
2:4.3.11+dfsg-0ubuntu0.16.04.6
2:4.3.11+dfsg-0ubuntu0.16.04.7
2:4.3.11+dfsg-0ubuntu0.16.04.8
2:4.3.11+dfsg-0ubuntu0.16.04.9
2:4.3.11+dfsg-0ubuntu0.16.04.10
2:4.3.11+dfsg-0ubuntu0.16.04.11
2:4.3.11+dfsg-0ubuntu0.16.04.12
2:4.3.11+dfsg-0ubuntu0.16.04.13
2:4.3.11+dfsg-0ubuntu0.16.04.15
2:4.3.11+dfsg-0ubuntu0.16.04.16
2:4.3.11+dfsg-0ubuntu0.16.04.17
2:4.3.11+dfsg-0ubuntu0.16.04.18
2:4.3.11+dfsg-0ubuntu0.16.04.19
2:4.3.11+dfsg-0ubuntu0.16.04.20
2:4.3.11+dfsg-0ubuntu0.16.04.21
2:4.3.11+dfsg-0ubuntu0.16.04.23
2:4.3.11+dfsg-0ubuntu0.16.04.24
2:4.3.11+dfsg-0ubuntu0.16.04.25
2:4.3.11+dfsg-0ubuntu0.16.04.26
2:4.3.11+dfsg-0ubuntu0.16.04.27
2:4.3.11+dfsg-0ubuntu0.16.04.28
2:4.3.11+dfsg-0ubuntu0.16.04.29
2:4.3.11+dfsg-0ubuntu0.16.04.30
2:4.3.11+dfsg-0ubuntu0.16.04.31
2:4.3.11+dfsg-0ubuntu0.16.04.32
2:4.3.11+dfsg-0ubuntu0.16.04.34
2:4.3.11+dfsg-0ubuntu0.16.04.34+esm1
2:4.3.11+dfsg-0ubuntu0.16.04.34+esm2
2:4.3.11+dfsg-0ubuntu0.16.04.34+esm3
2:4.3.11+dfsg-0ubuntu0.16.04.34+esm4

Ecosystem specific 

{
    "binaries": [
        {
            "binary_name": "ctdb",
            "binary_version": "2:4.3.11+dfsg-0ubuntu0.16.04.34+esm4"
        },
        {
            "binary_name": "libnss-winbind",
            "binary_version": "2:4.3.11+dfsg-0ubuntu0.16.04.34+esm4"
        },
        {
            "binary_name": "libpam-winbind",
            "binary_version": "2:4.3.11+dfsg-0ubuntu0.16.04.34+esm4"
        },
        {
            "binary_name": "libparse-pidl-perl",
            "binary_version": "2:4.3.11+dfsg-0ubuntu0.16.04.34+esm4"
        },
        {
            "binary_name": "libsmbclient",
            "binary_version": "2:4.3.11+dfsg-0ubuntu0.16.04.34+esm4"
        },
        {
            "binary_name": "libwbclient0",
            "binary_version": "2:4.3.11+dfsg-0ubuntu0.16.04.34+esm4"
        },
        {
            "binary_name": "python-samba",
            "binary_version": "2:4.3.11+dfsg-0ubuntu0.16.04.34+esm4"
        },
        {
            "binary_name": "registry-tools",
            "binary_version": "2:4.3.11+dfsg-0ubuntu0.16.04.34+esm4"
        },
        {
            "binary_name": "samba",
            "binary_version": "2:4.3.11+dfsg-0ubuntu0.16.04.34+esm4"
        },
        {
            "binary_name": "samba-common",
            "binary_version": "2:4.3.11+dfsg-0ubuntu0.16.04.34+esm4"
        },
        {
            "binary_name": "samba-common-bin",
            "binary_version": "2:4.3.11+dfsg-0ubuntu0.16.04.34+esm4"
        },
        {
            "binary_name": "samba-dsdb-modules",
            "binary_version": "2:4.3.11+dfsg-0ubuntu0.16.04.34+esm4"
        },
        {
            "binary_name": "samba-libs",
            "binary_version": "2:4.3.11+dfsg-0ubuntu0.16.04.34+esm4"
        },
        {
            "binary_name": "samba-testsuite",
            "binary_version": "2:4.3.11+dfsg-0ubuntu0.16.04.34+esm4"
        },
        {
            "binary_name": "samba-vfs-modules",
            "binary_version": "2:4.3.11+dfsg-0ubuntu0.16.04.34+esm4"
        },
        {
            "binary_name": "smbclient",
            "binary_version": "2:4.3.11+dfsg-0ubuntu0.16.04.34+esm4"
        },
        {
            "binary_name": "winbind",
            "binary_version": "2:4.3.11+dfsg-0ubuntu0.16.04.34+esm4"
        }
    ]
}

Database specific

source 
"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-4408.json"
Ubuntu:Pro:18.04:LTS
samba

Package

Name
samba
Purl
pkg:deb/ubuntu/samba?arch=source&distro=esm-infra%2Fbionic

Affected ranges

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

Affected versions

2:4.*
2:4.6.7+dfsg-1ubuntu3
2:4.7.1+dfsg-1ubuntu1
2:4.7.3+dfsg-1ubuntu1
2:4.7.4+dfsg-1ubuntu1
2:4.7.6+dfsg~ubuntu-0ubuntu1
2:4.7.6+dfsg~ubuntu-0ubuntu2
2:4.7.6+dfsg~ubuntu-0ubuntu2.2
2:4.7.6+dfsg~ubuntu-0ubuntu2.4
2:4.7.6+dfsg~ubuntu-0ubuntu2.5
2:4.7.6+dfsg~ubuntu-0ubuntu2.6
2:4.7.6+dfsg~ubuntu-0ubuntu2.7
2:4.7.6+dfsg~ubuntu-0ubuntu2.9
2:4.7.6+dfsg~ubuntu-0ubuntu2.10
2:4.7.6+dfsg~ubuntu-0ubuntu2.11
2:4.7.6+dfsg~ubuntu-0ubuntu2.13
2:4.7.6+dfsg~ubuntu-0ubuntu2.14
2:4.7.6+dfsg~ubuntu-0ubuntu2.15
2:4.7.6+dfsg~ubuntu-0ubuntu2.16
2:4.7.6+dfsg~ubuntu-0ubuntu2.17
2:4.7.6+dfsg~ubuntu-0ubuntu2.18
2:4.7.6+dfsg~ubuntu-0ubuntu2.19
2:4.7.6+dfsg~ubuntu-0ubuntu2.20
2:4.7.6+dfsg~ubuntu-0ubuntu2.21
2:4.7.6+dfsg~ubuntu-0ubuntu2.23
2:4.7.6+dfsg~ubuntu-0ubuntu2.24
2:4.7.6+dfsg~ubuntu-0ubuntu2.26
2:4.7.6+dfsg~ubuntu-0ubuntu2.27
2:4.7.6+dfsg~ubuntu-0ubuntu2.28
2:4.7.6+dfsg~ubuntu-0ubuntu2.29
2:4.7.6+dfsg~ubuntu-0ubuntu2.29+esm1
2:4.7.6+dfsg~ubuntu-0ubuntu2.29+esm2
2:4.7.6+dfsg~ubuntu-0ubuntu2.29+esm3

Ecosystem specific 

{
    "binaries": [
        {
            "binary_name": "ctdb",
            "binary_version": "2:4.7.6+dfsg~ubuntu-0ubuntu2.29+esm3"
        },
        {
            "binary_name": "libnss-winbind",
            "binary_version": "2:4.7.6+dfsg~ubuntu-0ubuntu2.29+esm3"
        },
        {
            "binary_name": "libpam-winbind",
            "binary_version": "2:4.7.6+dfsg~ubuntu-0ubuntu2.29+esm3"
        },
        {
            "binary_name": "libparse-pidl-perl",
            "binary_version": "2:4.7.6+dfsg~ubuntu-0ubuntu2.29+esm3"
        },
        {
            "binary_name": "libsmbclient",
            "binary_version": "2:4.7.6+dfsg~ubuntu-0ubuntu2.29+esm3"
        },
        {
            "binary_name": "libwbclient0",
            "binary_version": "2:4.7.6+dfsg~ubuntu-0ubuntu2.29+esm3"
        },
        {
            "binary_name": "python-samba",
            "binary_version": "2:4.7.6+dfsg~ubuntu-0ubuntu2.29+esm3"
        },
        {
            "binary_name": "registry-tools",
            "binary_version": "2:4.7.6+dfsg~ubuntu-0ubuntu2.29+esm3"
        },
        {
            "binary_name": "samba",
            "binary_version": "2:4.7.6+dfsg~ubuntu-0ubuntu2.29+esm3"
        },
        {
            "binary_name": "samba-common",
            "binary_version": "2:4.7.6+dfsg~ubuntu-0ubuntu2.29+esm3"
        },
        {
            "binary_name": "samba-common-bin",
            "binary_version": "2:4.7.6+dfsg~ubuntu-0ubuntu2.29+esm3"
        },
        {
            "binary_name": "samba-dsdb-modules",
            "binary_version": "2:4.7.6+dfsg~ubuntu-0ubuntu2.29+esm3"
        },
        {
            "binary_name": "samba-libs",
            "binary_version": "2:4.7.6+dfsg~ubuntu-0ubuntu2.29+esm3"
        },
        {
            "binary_name": "samba-testsuite",
            "binary_version": "2:4.7.6+dfsg~ubuntu-0ubuntu2.29+esm3"
        },
        {
            "binary_name": "samba-vfs-modules",
            "binary_version": "2:4.7.6+dfsg~ubuntu-0ubuntu2.29+esm3"
        },
        {
            "binary_name": "smbclient",
            "binary_version": "2:4.7.6+dfsg~ubuntu-0ubuntu2.29+esm3"
        },
        {
            "binary_name": "winbind",
            "binary_version": "2:4.7.6+dfsg~ubuntu-0ubuntu2.29+esm3"
        }
    ]
}

Database specific

source 
"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-4408.json"
Ubuntu:Pro:20.04:LTS
samba

Package

Name
samba
Purl
pkg:deb/ubuntu/samba?arch=source&distro=esm-infra%2Ffocal

Affected ranges

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

Affected versions

2:4.*
2:4.10.7+dfsg-0ubuntu2
2:4.10.7+dfsg-0ubuntu3
2:4.11.1+dfsg-3ubuntu1
2:4.11.1+dfsg-3ubuntu2
2:4.11.1+dfsg-3ubuntu4
2:4.11.5+dfsg-1ubuntu1
2:4.11.5+dfsg-1ubuntu2
2:4.11.6+dfsg-0ubuntu1
2:4.11.6+dfsg-0ubuntu1.1
2:4.11.6+dfsg-0ubuntu1.2
2:4.11.6+dfsg-0ubuntu1.3
2:4.11.6+dfsg-0ubuntu1.4
2:4.11.6+dfsg-0ubuntu1.5
2:4.11.6+dfsg-0ubuntu1.6
2:4.11.6+dfsg-0ubuntu1.8
2:4.11.6+dfsg-0ubuntu1.9
2:4.11.6+dfsg-0ubuntu1.10
2:4.13.14+dfsg-0ubuntu0.20.04.1
2:4.13.14+dfsg-0ubuntu0.20.04.2
2:4.13.14+dfsg-0ubuntu0.20.04.3
2:4.13.14+dfsg-0ubuntu0.20.04.4
2:4.13.17~dfsg-0ubuntu0.21.04.1
2:4.13.17~dfsg-0ubuntu0.21.04.2
2:4.13.17~dfsg-0ubuntu1.20.04.1
2:4.13.17~dfsg-0ubuntu1.20.04.2
2:4.13.17~dfsg-0ubuntu1.20.04.4
2:4.13.17~dfsg-0ubuntu1.20.04.5
2:4.15.13+dfsg-0ubuntu0.20.04.1
2:4.15.13+dfsg-0ubuntu0.20.04.2
2:4.15.13+dfsg-0ubuntu0.20.04.3
2:4.15.13+dfsg-0ubuntu0.20.04.4
2:4.15.13+dfsg-0ubuntu0.20.04.5
2:4.15.13+dfsg-0ubuntu0.20.04.6
2:4.15.13+dfsg-0ubuntu0.20.04.7
2:4.15.13+dfsg-0ubuntu0.20.04.8
2:4.15.13+dfsg-0ubuntu0.20.04.8+esm1

Ecosystem specific 

{
    "binaries": [
        {
            "binary_name": "ctdb",
            "binary_version": "2:4.15.13+dfsg-0ubuntu0.20.04.8+esm1"
        },
        {
            "binary_name": "libnss-winbind",
            "binary_version": "2:4.15.13+dfsg-0ubuntu0.20.04.8+esm1"
        },
        {
            "binary_name": "libpam-winbind",
            "binary_version": "2:4.15.13+dfsg-0ubuntu0.20.04.8+esm1"
        },
        {
            "binary_name": "libsmbclient",
            "binary_version": "2:4.15.13+dfsg-0ubuntu0.20.04.8+esm1"
        },
        {
            "binary_name": "libwbclient0",
            "binary_version": "2:4.15.13+dfsg-0ubuntu0.20.04.8+esm1"
        },
        {
            "binary_name": "python3-samba",
            "binary_version": "2:4.15.13+dfsg-0ubuntu0.20.04.8+esm1"
        },
        {
            "binary_name": "registry-tools",
            "binary_version": "2:4.15.13+dfsg-0ubuntu0.20.04.8+esm1"
        },
        {
            "binary_name": "samba",
            "binary_version": "2:4.15.13+dfsg-0ubuntu0.20.04.8+esm1"
        },
        {
            "binary_name": "samba-common",
            "binary_version": "2:4.15.13+dfsg-0ubuntu0.20.04.8+esm1"
        },
        {
            "binary_name": "samba-common-bin",
            "binary_version": "2:4.15.13+dfsg-0ubuntu0.20.04.8+esm1"
        },
        {
            "binary_name": "samba-dsdb-modules",
            "binary_version": "2:4.15.13+dfsg-0ubuntu0.20.04.8+esm1"
        },
        {
            "binary_name": "samba-libs",
            "binary_version": "2:4.15.13+dfsg-0ubuntu0.20.04.8+esm1"
        },
        {
            "binary_name": "samba-testsuite",
            "binary_version": "2:4.15.13+dfsg-0ubuntu0.20.04.8+esm1"
        },
        {
            "binary_name": "samba-vfs-modules",
            "binary_version": "2:4.15.13+dfsg-0ubuntu0.20.04.8+esm1"
        },
        {
            "binary_name": "smbclient",
            "binary_version": "2:4.15.13+dfsg-0ubuntu0.20.04.8+esm1"
        },
        {
            "binary_name": "winbind",
            "binary_version": "2:4.15.13+dfsg-0ubuntu0.20.04.8+esm1"
        }
    ]
}

Database specific

source 
"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-4408.json"