Vulnerability in Firewalld
CVE-2026-4948
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.
Published · last modified .
CVSS v3 metric
CVSS v3 base score 5.5 (Medium). Vector: CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:H/A:N.
EPSS exploit prediction
EPSS: 0.002 (6.7th percentile), scored .
Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 7th percentile — 6.7% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.001 · newest: 0.002 · change: +0.001
Affected products
Weakness classification (CWE)
References
- access.redhat.com/security/cve/CVE-2026-4948 (Mitigation, vdb-entry, Vendor Advisory)
- bugzilla.redhat.com/show_bug.cgi (issue-tracking, Issue Tracking, Vendor Advisory)
- af854a3a-2127-422b-91ae-364da2661108
- access.redhat.com/errata/RHBA-2026:28238 (vendor-advisory)
- access.redhat.com/errata/RHSA-2026:67585 (vendor-advisory)
- access.redhat.com/errata/RHSA-2026:67843 (vendor-advisory)
Frequently asked questions
- What is CVE-2026-4948?
- CVE-2026-4948 is a medium-severity vulnerability in Firewalld, classified under Incorrect Execution-Assigned Permissions. CVSS score: 5.5/10. Published 2026-03-27.
- How severe is CVE-2026-4948?
- Medium severity. CVSS v3 base score is 5.5 out of 10.