{"id":"UBUNTU-CVE-2026-4948","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.","modified":"2026-05-20T16:26:11.212549949Z","published":"2026-03-27T06:16:00Z","upstream":["CVE-2026-4948"],"references":[{"type":"REPORT","url":"https://ubuntu.com/security/CVE-2026-4948"},{"type":"REPORT","url":"https://www.cve.org/CVERecord?id=CVE-2026-4948"},{"type":"REPORT","url":"https://bugzilla.redhat.com/show_bug.cgi?id=2452086"},{"type":"REPORT","url":"https://access.redhat.com/security/cve/CVE-2026-4948"}],"affected":[{"package":{"name":"firewalld","ecosystem":"Ubuntu:16.04:LTS","purl":"pkg:deb/ubuntu/firewalld?arch=source&distro=xenial"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["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"}},{"package":{"name":"firewalld","ecosystem":"Ubuntu:18.04:LTS","purl":"pkg:deb/ubuntu/firewalld?arch=source&distro=bionic"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["0.4.4.5-2","0.4.4.6-1"],"ecosystem_specific":{"binaries":[{"binary_version":"0.4.4.6-1","binary_name":"firewall-applet"},{"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"}},{"package":{"name":"firewalld","ecosystem":"Ubuntu:20.04:LTS","purl":"pkg:deb/ubuntu/firewalld?arch=source&distro=focal"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["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_version":"0.8.2-1","binary_name":"firewall-applet"},{"binary_version":"0.8.2-1","binary_name":"firewall-config"},{"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"}},{"package":{"name":"firewalld","ecosystem":"Ubuntu:22.04:LTS","purl":"pkg:deb/ubuntu/firewalld?arch=source&distro=jammy"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["0.9.3-2ubuntu1","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_version":"1.1.1-1ubuntu1","binary_name":"firewall-applet"},{"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"}},{"package":{"name":"firewalld","ecosystem":"Ubuntu:24.04:LTS","purl":"pkg:deb/ubuntu/firewalld?arch=source&distro=noble"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["1.3.3-1","2.0.1-1","2.0.1-2","2.0.2-1","2.1.0-1","2.1.1-1"],"ecosystem_specific":{"binaries":[{"binary_version":"2.1.1-1","binary_name":"firewall-applet"},{"binary_version":"2.1.1-1","binary_name":"firewall-config"},{"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"}},{"package":{"name":"firewalld","ecosystem":"Ubuntu:25.10","purl":"pkg:deb/ubuntu/firewalld?arch=source&distro=questing"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["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_version":"2.3.1-2ubuntu1","binary_name":"firewall-applet"},{"binary_version":"2.3.1-2ubuntu1","binary_name":"firewall-config"},{"binary_version":"2.3.1-2ubuntu1","binary_name":"firewalld"},{"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"}},{"package":{"name":"firewalld","ecosystem":"Ubuntu:26.04:LTS","purl":"pkg:deb/ubuntu/firewalld?arch=source&distro=resolute"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["2.3.1-2ubuntu1","2.3.1-3"],"ecosystem_specific":{"binaries":[{"binary_name":"firewall-applet","binary_version":"2.3.1-3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