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Red Hat Enterprise Linux 10 EUVD-2026-16557

| CVE-2026-4948 MEDIUM
Incorrect Execution-Assigned Permissions (CWE-279)
2026-03-27 redhat
Authentication Bypass Red Hat Enterprise Linux 10 Red Hat Enterprise Linux 7 Red Hat Enterprise Linux 8 Red Hat Enterprise Linux 9 Red Hat Openshift Container Platform 4
5.5
CVSS 3.1 · NVD
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Severity by source

NVD PRIMARY
5.5 MEDIUM
AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:H/A:N
SUSE
MEDIUM
qualitative
Red Hat
5.5 MEDIUM
qualitative

Primary rating from NVD.

CVSS VectorNVD

CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:H/A:N
Attack Vector
Local
Attack Complexity
Low
Privileges Required
Low
User Interaction
None
Scope
Unchanged
Confidentiality
None
Integrity
High
Availability
None

Lifecycle Timeline

4
Patch released
Mar 31, 2026 - 21:13 nvd
Patch available
EUVD ID Assigned
Mar 27, 2026 - 06:00 euvd
EUVD-2026-16557
Analysis Generated
Mar 27, 2026 - 06:00 vuln.today
CVE Published
Mar 27, 2026 - 05:30 nvd
MEDIUM 5.5

DescriptionCVE.org

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.

AnalysisAI

Firewalld on Red Hat Enterprise Linux 7, 8, 9, and 10, as well as OpenShift Container Platform 4, contains an authentication bypass vulnerability in two D-Bus setters (setZoneSettings2 and setPolicySettings) that allows local unprivileged users to modify runtime firewall configurations without proper authorization. An authenticated local attacker can exploit this to change network security policies, potentially enabling lateral movement or service disruption. …

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Vulnerability AssessmentAI

Risk Assessment The CVSS 3.1 base score of 5.5 (vector: AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:H/A:N) indicates a medium-severity integrity-focused vulnerability with low attack complexity, requiring only local access and low-level user privileges. … Full risk analysis with EPSS, KEV, and SSVC signal comparison available after sign-in.
Exploit Scenario An unprivileged local user on a Red Hat Enterprise Linux 8 system (e.g., a service account or containerized workload) invokes the setZoneSettings2 or setPolicySettings D-Bus method to open inbound ports or disable firewall rules protecting sensitive internal services. Because the D-Bus authorization policy lacks proper access control checks, the call succeeds despite the caller lacking firewall administration rights. …
Remediation Apply the security update provided by Red Hat for firewalld across all affected Red Hat Enterprise Linux systems (7, 8, 9, 10) and OpenShift Container Platform 4.x deployments. … Detailed patch versions, workarounds, and compensating controls in full report.
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Recommended ActionAI

Within 30 days: Identify affected systems and apply vendor patches as part of regular patch cycle. …

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Vendor StatusVendor

SUSE

Severity: Medium
Product Status
SUSE Linux Enterprise Desktop 15 SP7 Fixed
SUSE Linux Enterprise High Performance Computing 15 SP7 Fixed
SUSE Linux Enterprise Micro 5.2 Fixed
SUSE Linux Enterprise Micro 5.3 Fixed
SUSE Linux Enterprise Micro 5.4 Fixed

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EUVD-2026-16557 vulnerability details – vuln.today
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