What’s Vulnerable › Vulnerabilities

CVE-2026-4948: Firewalld: firewalld: local unprivileged user can modify firewall state due to d-bus setter mis-authorization

• Severity: medium (CVSS 5.5 v3.1)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 0.1% probability of exploitation in the next 30 days
• Public exploit or detection template: none known
• Published: 2026-03-27 · updated 2026-10-26
• Weakness: CWE-279

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.

Affected products

• Firewalld: through 2.4.0
• Red Hat Enterprise Linux: 7.0

References

• https://access.redhat.com/errata/RHBA-2026:28238
• https://access.redhat.com/errata/RHSA-2026:67585
• https://access.redhat.com/errata/RHSA-2026:67843
• https://access.redhat.com/errata/RHSA-2026:76844
• https://access.redhat.com/security/cve/CVE-2026-4948
• https://bugzilla.redhat.com/show_bug.cgi?id=2452086
• https://lists.debian.org/debian-lts-announce/2026/05/msg00029.html

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