CVE-2026-4948

MEDIUM

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

Title source: cna

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.

References (3)

Core 3

Core References

Vdb Entry, X_Refsource_Redhat vdb-entry x_refsource_redhat

https://access.redhat.com/security/cve/CVE-2026-4948

Issue Tracking, X_Refsource_Redhat issue-tracking x_refsource_redhat

RHBZ#2452086

https://bugzilla.redhat.com/show_bug.cgi?id=2452086

Mailing List

https://lists.debian.org/debian-lts-announce/2026/05/msg00029.html

Scores

CVSS v3 5.5

EPSS 0.0003

EPSS Percentile 7.9%

Attack Vector LOCAL

CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:H/A:N

CISA SSVC

Vulnrichment

Exploitation none

Automatable no

Technical Impact partial

Details

CWE

CWE-279

Status published

Products (7)

firewalld/firewalld < 2.4.0

Red Hat/Red Hat Enterprise Linux 10

Red Hat/Red Hat Enterprise Linux 7

Red Hat/Red Hat Enterprise Linux 8

Red Hat/Red Hat Enterprise Linux 9

Red Hat/Red Hat OpenShift Container Platform 4

redhat/enterprise_linux 7.0

Published Mar 27, 2026

Tracked Since Mar 27, 2026