CVE-2026-4948

Firewalld: firewalld: local unprivileged user can modify firewall state due to d-bus setter mis-authorization

State: Published
Severity: 5.5 Medium
Published: Mar 27, 2026
Updated: Oct 6, 2026
Reserved: Mar 27, 2026

Description

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.

Scores

CVSS	Score	Vector	Source
3.1	5.5 Medium	CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:H/A:N	redhat

Weaknesses

CWE-279 Incorrect Execution-Assigned Permissions

Affected Products

Product	Versions
Red Hat Enterprise Linux 10Red Hat	0:2.4.2-1.el10_2 and laterNot affected
Red Hat Enterprise Linux 10.0 Extended Update SupportRed Hat	0:2.3.1-1.el10_0.1 and laterNot affected
Red Hat Enterprise Linux 9Red Hat	0:1.3.4-20.el9_8 and laterNot affected
Red Hat Enterprise Linux 9Red Hat	0:1.3.4-20.el9_8 and laterNot affected
Red Hat Enterprise Linux 9.6 Extended Update SupportRed Hat	0:1.3.4-15.el9_6.1 and laterNot affected
Red Hat Enterprise Linux 7Red Hat
Red Hat Enterprise Linux 8Red Hat
Red Hat OpenShift Container Platform 4Red Hat
Red Hat OpenShift Container Platform 4Red Hat

References

RHBA-2026:28238vendor-advisory
RHSA-2026:67585vendor-advisory
RHSA-2026:67843vendor-advisory
RHSA-2026:76844vendor-advisory
https://access.redhat.com/security/cve/CVE-2026-4948vdb-entry
RHBZ#2452086issue-tracking
https://lists.debian.org/debian-lts-announce/2026/05/msg00029.html

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