Local Privilege Escalation Vulnerability in Firewalld by Red Hat
CVE-2026-4948

5.5MEDIUM

Key Information:

Vendor

Red Hat
Status
Red Hat Enterprise Linux 10
Red Hat Enterprise Linux 7
Red Hat Enterprise Linux 8
Red Hat Enterprise Linux 9
Vendor
CVE Published:
27 March 2026

What is CVE-2026-4948?

A vulnerability exists in Firewalld that permits unprivileged local users to exploit mis-authorized D-Bus setters, specifically setZoneSettings2 and setPolicySettings. This flaw allows malicious actors to alter runtime firewall settings without proper authentication, potentially leading to unauthorized modifications in network security policies. Such a breach can undermine the integrity and security of network configurations, highlighting the necessity of prompt updates and security measures.

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References

https://access.redhat.com/security/cve/CVE-2026-4948
vdb-entryx_refsource_REDHAT
https://bugzilla.redhat.com/show_bug.cgi?id=2452086
issue-trackingx_refsource_REDHAT

CVSS V3.1

Score:
5.5
Severity:
MEDIUM
Confidentiality:
None
Integrity:
High
Availability:
None
Attack Vector:
Local
Attack Complexity:
Low
Privileges Required:
Low
User Interaction:
None
Scope:
Unchanged

Timeline

  • Vulnerability published

  • Vulnerability Reserved

Credit

Red Hat would like to thank Asim Viladi Oglu Manizada for reporting this issue.
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