Skip to main content

Red Hat Enterprise Linux 10 CVE-2026-4948

| EUVDEUVD-2026-16557 MEDIUM
Incorrect Execution-Assigned Permissions (CWE-279)
2026-03-27 redhat
5.5
CVSS 3.1 · Vendor: redhat
Share

Severity by source

Vendor (redhat) 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 Vendor (redhat).

CVSS VectorVendor: redhat

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. No public exploit code has been identified at the time of analysis, though Red Hat has issued security advisories (CVE-2026-4948, Bugzilla #2452086).

Technical ContextAI

The vulnerability exists in firewalld's D-Bus interface, a system message bus used for inter-process communication on Linux systems. Specifically, the setZoneSettings2 and setPolicySettings D-Bus methods implement insufficient authorization checks (CWE-279: Improper Access Control), allowing local users with basic privileges to invoke these setters despite lacking the required permissions to modify firewall runtime state. Affected versions span Red Hat Enterprise Linux across major releases (7, 8, 9, 10) and container platforms (OpenShift 4.x), as confirmed by CPE identifiers cpe:2.3:a:red_hat:red_hat_enterprise_linux_*. The flaw is rooted in the D-Bus service definition or firewalld daemon's policy enforcement layer failing to validate caller credentials before applying zone and policy configuration changes.

RemediationAI

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. Consult the vendor advisory at https://access.redhat.com/security/cve/CVE-2026-4948 for exact patched package versions and deployment guidance. For systems where immediate patching is not feasible, implement host-level access controls to restrict which local users can execute on the system, and review D-Bus policy files (/etc/dbus-1/system.d/firewalld.conf or equivalent) to verify authorization rules if local modifications are possible. Container platforms should prioritize patching node images and redeploying affected nodes. Monitor D-Bus method invocations for setZoneSettings2 and setPolicySettings calls originating from unprivileged user contexts as a temporary detection measure.

CVE-2026-4631 CRITICAL POC
9.8 Apr 07

Remote code execution in Cockpit's web interface allows unauthenticated attackers to execute arbitrary commands on the h

CVE-2026-4480 CRITICAL POC
9.0 May 26

Remote code execution in Samba's printing subsystem allows remote attackers to inject arbitrary shell commands via craft

CVE-2026-14544 CRITICAL
9.8 Jul 03

Remote code execution and privilege escalation in HPLIP (HP Linux Imaging and Printing) affects the hpcups print filter

CVE-2026-28369 CRITICAL
9.1 Mar 27

HTTP request smuggling in Undertow (the embedded web server underpinning JBoss EAP, Red Hat Data Grid, and Apache Camel

CVE-2026-28368 CRITICAL
9.1 Mar 27

HTTP request smuggling in Red Hat Undertow allows remote unauthenticated attackers to bypass front-end security controls

CVE-2026-33845 CRITICAL
9.1 Apr 30

Out-of-bounds read in the GnuTLS DTLS handshake reassembly logic lets remote unauthenticated attackers trigger an intege

CVE-2026-28367 CRITICAL
9.1 Mar 27

HTTP request smuggling in Undertow allows remote unauthenticated attackers to send `\r\r\r` as a header block terminator

CVE-2026-16526 HIGH
8.8 Jul 30

Local privilege escalation in Performance Co-Pilot (PCP) on Red Hat Enterprise Linux 6 through 10 and OpenShift Containe

CVE-2026-11610 HIGH
8.8 Jul 07

Denial of service in Red Hat / 389 Directory Server (389-ds-base, versions since ~1.3.2/2013) allows an authenticated LD

CVE-2026-14474 HIGH
8.8 Jul 07

Local-to-domain-wide root privilege escalation in SSSD's LDAP sudo provider allows an authenticated LDAP directory user

CVE-2026-52720 HIGH
8.8 Jun 15

Heap buffer overflow in GStreamer's librfb (RFB/VNC client) allows a malicious VNC server to corrupt heap memory on a co

CVE-2026-59851 HIGH
8.8 Jul 21

Privilege escalation via authentication bypass in libssh affects servers that enable GSSAPIKeyExchange, where the gssapi

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

Share

CVE-2026-4948 vulnerability details – vuln.today

This site uses cookies essential for authentication and security. No tracking or analytics cookies are used. Privacy Policy