Medium severity · published Mar 27, 2026
CVE-2026-4948
Firewalld: firewalld: local unprivileged user can modify firewall state due to d-bus setter mis-authorization
5.5
CVSS
0.1%
EPSS
No
On KEV
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.
CVSS vector
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:H/A:N
Attack vector
Local
Complexity
Low
Privileges
Low
User interaction
None
Confidentiality
None
Integrity
High
Availability
None
Scope
Unchanged
Exploitation
Is it being used?
Exploit prediction (EPSS)0.1% · higher than 2% of CVEs
Exploited in the wildNo evidence yet
CISA KEVNot listed
Ransomware campaign useNot known
Affected products
Which versions
RH
Red Hat Enterprise Linux 10 · Red Hat
All versions, or not specified · source: vendor
RH
Red Hat Enterprise Linux 10.0 Extended Update Support · Red Hat
All versions, or not specified · source: vendor
RH
Red Hat Enterprise Linux 7 · Red Hat
All versions, or not specified · source: vendor
RH
Red Hat Enterprise Linux 8 · Red Hat
All versions, or not specified · source: vendor
RH
Red Hat Enterprise Linux 9 · Red Hat
All versions, or not specified · source: vendor
RH
Red Hat Enterprise Linux 9.6 Extended Update Support · Red Hat
All versions, or not specified · source: vendor
RH
Red Hat OpenShift Container Platform 4 · Red Hat
All versions, or not specified · source: vendor
EL
Enterprise Linux · Redhat
7.0 · source: NVD
FI
Firewalld · Firewalld
through 2.4.0 · source: NVD
References
NVD
https://nvd.nist.gov/vuln/detail/CVE-2026-4948
CVE.org
https://www.cve.org/CVERecord?id=CVE-2026-4948
vendor-advisory
https://access.redhat.com/errata/RHBA-2026:28238
vendor-advisory
https://access.redhat.com/errata/RHSA-2026:67585
vendor-advisory
https://access.redhat.com/errata/RHSA-2026:67843
vendor-advisory
https://access.redhat.com/errata/RHSA-2026:76844
vdb-entry
https://access.redhat.com/security/cve/CVE-2026-4948
issue-tracking
https://bugzilla.redhat.com/show_bug.cgi?id=2452086
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