UBUNTU-CVE-2026-4948

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Source
https://ubuntu.com/security/CVE-2026-4948
Import Source
https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-4948.json
JSON Data
https://api.osv.dev/v1/vulns/UBUNTU-CVE-2026-4948
Upstream
  • CVE-2026-4948
Published
2026-03-27T06:16:00Z
Modified
2026-05-20T16:26:11.212549949Z
Severity
  • 5.5 (Medium) CVSS_V3 - CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:H/A:N CVSS Calculator
  • Ubuntu - medium
Summary
[none]
Details

A flaw was found in firewalld. A local unprivileged user can exploit this vulnerability by mis-authorizing two runtime D-Bus (Desktop Bus) setters, setZoneSettings2 and setPolicySettings. This mis-authorization allows the user to modify the runtime firewall state without proper authentication, leading to unauthorized changes in network security configurations.

References

Affected packages

Ubuntu:16.04:LTS
firewalld

Package

Name
firewalld
Purl
pkg:deb/ubuntu/firewalld?arch=source&distro=xenial

Affected ranges

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

Affected versions

0.*
0.3.13-1
0.3.14.2-1
0.3.14.2-2
0.4.0-1
0.4.0-1ubuntu0.1

Ecosystem specific 

{
    "binaries": [
        {
            "binary_name": "firewall-applet",
            "binary_version": "0.4.0-1ubuntu0.1"
        },
        {
            "binary_name": "firewall-config",
            "binary_version": "0.4.0-1ubuntu0.1"
        },
        {
            "binary_name": "firewalld",
            "binary_version": "0.4.0-1ubuntu0.1"
        }
    ]
}

Database specific

source 
"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-4948.json"
Ubuntu:18.04:LTS
firewalld

Package

Name
firewalld
Purl
pkg:deb/ubuntu/firewalld?arch=source&distro=bionic

Affected ranges

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

Affected versions

0.*
0.4.4.5-2
0.4.4.6-1

Ecosystem specific 

{
    "binaries": [
        {
            "binary_name": "firewall-applet",
            "binary_version": "0.4.4.6-1"
        },
        {
            "binary_name": "firewall-config",
            "binary_version": "0.4.4.6-1"
        },
        {
            "binary_name": "firewalld",
            "binary_version": "0.4.4.6-1"
        }
    ]
}

Database specific

source 
"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-4948.json"
Ubuntu:20.04:LTS
firewalld

Package

Name
firewalld
Purl
pkg:deb/ubuntu/firewalld?arch=source&distro=focal

Affected ranges

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

Affected versions

0.*
0.7.1-1ubuntu9
0.7.2-1
0.8.0-1
0.8.0-2
0.8.1-1
0.8.2-1

Ecosystem specific 

{
    "binaries": [
        {
            "binary_name": "firewall-applet",
            "binary_version": "0.8.2-1"
        },
        {
            "binary_name": "firewall-config",
            "binary_version": "0.8.2-1"
        },
        {
            "binary_name": "firewalld",
            "binary_version": "0.8.2-1"
        },
        {
            "binary_name": "python3-firewall",
            "binary_version": "0.8.2-1"
        }
    ]
}

Database specific

source 
"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-4948.json"
Ubuntu:22.04:LTS
firewalld

Package

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

Affected ranges

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

Affected versions

0.*
0.9.3-2ubuntu1
1.*
1.0.1-2ubuntu4
1.0.2-1ubuntu1
1.0.3-1ubuntu2
1.1.0-1ubuntu1
1.1.0-1ubuntu3
1.1.0-1ubuntu4
1.1.1-1ubuntu1

Ecosystem specific 

{
    "binaries": [
        {
            "binary_name": "firewall-applet",
            "binary_version": "1.1.1-1ubuntu1"
        },
        {
            "binary_name": "firewall-config",
            "binary_version": "1.1.1-1ubuntu1"
        },
        {
            "binary_name": "firewalld",
            "binary_version": "1.1.1-1ubuntu1"
        },
        {
            "binary_name": "firewalld-tests",
            "binary_version": "1.1.1-1ubuntu1"
        },
        {
            "binary_name": "python3-firewall",
            "binary_version": "1.1.1-1ubuntu1"
        }
    ]
}

Database specific

source 
"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-4948.json"
Ubuntu:24.04:LTS
firewalld

Package

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

Affected ranges

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

Affected versions

1.*
1.3.3-1
2.*
2.0.1-1
2.0.1-2
2.0.2-1
2.1.0-1
2.1.1-1

Ecosystem specific 

{
    "binaries": [
        {
            "binary_name": "firewall-applet",
            "binary_version": "2.1.1-1"
        },
        {
            "binary_name": "firewall-config",
            "binary_version": "2.1.1-1"
        },
        {
            "binary_name": "firewalld",
            "binary_version": "2.1.1-1"
        },
        {
            "binary_name": "firewalld-tests",
            "binary_version": "2.1.1-1"
        },
        {
            "binary_name": "python3-firewall",
            "binary_version": "2.1.1-1"
        }
    ]
}

Database specific

source 
"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-4948.json"
Ubuntu:25.10
firewalld

Package

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

Affected ranges

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

Affected versions

2.*
2.3.0-2
2.3.0-3
2.3.0-4
2.3.1-1
2.3.1-2
2.3.1-2ubuntu1

Ecosystem specific 

{
    "binaries": [
        {
            "binary_name": "firewall-applet",
            "binary_version": "2.3.1-2ubuntu1"
        },
        {
            "binary_name": "firewall-config",
            "binary_version": "2.3.1-2ubuntu1"
        },
        {
            "binary_name": "firewalld",
            "binary_version": "2.3.1-2ubuntu1"
        },
        {
            "binary_name": "firewalld-tests",
            "binary_version": "2.3.1-2ubuntu1"
        },
        {
            "binary_name": "python3-firewall",
            "binary_version": "2.3.1-2ubuntu1"
        }
    ]
}

Database specific

source 
"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-4948.json"
Ubuntu:26.04:LTS
firewalld

Package

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

Affected ranges

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

Affected versions

2.*
2.3.1-2ubuntu1
2.3.1-3

Ecosystem specific 

{
    "binaries": [
        {
            "binary_name": "firewall-applet",
            "binary_version": "2.3.1-3"
        },
        {
            "binary_name": "firewall-config",
            "binary_version": "2.3.1-3"
        },
        {
            "binary_name": "firewalld",
            "binary_version": "2.3.1-3"
        },
        {
            "binary_name": "firewalld-tests",
            "binary_version": "2.3.1-3"
        },
        {
            "binary_name": "python3-firewall",
            "binary_version": "2.3.1-3"
        }
    ]
}

Database specific

source 
"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-4948.json"