---
id: CVE-2026-4948
title: A flaw was found in firewalld
summary: >-
  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 …
severity: medium
cvss: 5.5
cvssVector: 'CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:H/A:N'
cwe:
  - CWE-279
vendor: firewalld
product: firewalld
affected:
  - firewalld <= 2.4.0
  - enterprise_linux = 7.0
published: '2026-03-27'
updated: '2026-09-16'
sourceUpdated: '2026-09-16T13:18:01.110'
source: NVD
sourceUrl: 'https://nvd.nist.gov/vuln/detail/CVE-2026-4948'
references:
  - url: 'https://access.redhat.com/errata/RHBA-2026:28238'
    label: secalert@redhat.com
  - url: 'https://access.redhat.com/errata/RHSA-2026:67585'
    label: secalert@redhat.com
  - url: 'https://access.redhat.com/errata/RHSA-2026:67843'
    label: secalert@redhat.com
  - url: 'https://access.redhat.com/security/cve/CVE-2026-4948'
    label: secalert@redhat.com
  - url: 'https://bugzilla.redhat.com/show_bug.cgi?id=2452086'
    label: secalert@redhat.com
  - url: 'https://lists.debian.org/debian-lts-announce/2026/05/msg00029.html'
    label: af854a3a-2127-422b-91ae-364da2661108
  - url: >-
      https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-4948.json
  - url: 'https://www.cve.org/CVERecord?id=CVE-2026-4948'
  - url: 'https://nvd.nist.gov/vuln/detail/CVE-2026-4948'
tags:
  - nvd
  - cve.org
  - csaf
  - vex
  - red-hat
epss: 0.00124
epssPercentile: 0.02443
ssvc:
  exploitation: none
  automatable: 'no'
  technicalImpact: partial
  timestamp: '2026-03-27T11:21:05.300360Z'
ingestedAt: '2026-07-28T14:36:37.987Z'
patched:
  - enterprise_linux_appstream_eus_v_10_0
  - enterprise_linux_appstream_v_10
  - enterprise_linux_appstream_v_9
  - enterprise_linux_baseos_eus_v_10_0
  - enterprise_linux_baseos_v_10
  - enterprise_linux_baseos_v_9
---

## Overview

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.

## Affected

- `firewalld <= 2.4.0`
- `enterprise_linux = 7.0`

## Remediation

Refer to the linked advisories for vendor-supplied fixes and affected version ranges.

## Vendor advisories

- **RHSA-2026:67843** · Red Hat · fixed in: Red Hat Enterprise Linux AppStream EUS (v. 10.0), Red Hat Enterprise Linux BaseOS EUS (v. 10.0) · released 2026-09-16 · [advisory](https://access.redhat.com/errata/RHSA-2026:67843)
- **RHBA-2026:28238** · Red Hat · fixed in: Red Hat Enterprise Linux AppStream (v. 10), Red Hat Enterprise Linux BaseOS (v. 10) · released 2026-06-23 · [advisory](https://access.redhat.com/errata/RHBA-2026:28238)
- **RHSA-2026:67585** · Red Hat · fixed in: Red Hat Enterprise Linux AppStream (v. 9), Red Hat Enterprise Linux BaseOS (v. 9) · released 2026-09-15 · [advisory](https://access.redhat.com/errata/RHSA-2026:67585)
- **Red Hat VEX** · Moderate · affected: Red Hat Enterprise Linux 7, Red Hat Enterprise Linux 8, Red Hat OpenShift Container Platform 4 · no fix planned: Red Hat Enterprise Linux 7, Red Hat Enterprise Linux 8, Red Hat OpenShift Container Platform 4 · updated 2026-09-16 · [vex](https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-4948.json)