Red Hat has issued numerous security advisories for packages running across multiple versions of its enterprise Linux distribution. The updates address vulnerabilities in essential tools like vim, sudo, pcs, OpenStack Nova, and various system utilities. Nearly every release carries an Important severity rating, though detailed CVSS scores are available through the linked CVE references. System administrators must apply these patches to maintain protection for extended support environments and specialized service tracks.

RHSA-2026:11509: Important: vim security update
RHSA-2026:11521: Important: sudo security update
RHSA-2026:11516: Important: pcs security update
RHSA-2026:11510: Important: vim security update
RHSA-2026:11493: Important: pcs security update
RHSA-2026:11469: Important: pcs security update
RHSA-2026:11495: Important: pcs security update
RHSA-2026:11494: Important: pcs security update
RHSA-2026:11471: Important: pcs security update
RHSA-2026:11470: Important: pcs security update
RHSA-2026:11454: Important: pcs security update
RHSA-2026:7884: Important: Red Hat OpenStack Services on OpenShift 18.0.18 (openstack-nova) security update
RHSA-2026:11692: Important: xorg-x11-server security update
RHSA-2026:11702: Important: ovn25.09 security update
RHSA-2026:11696: Important: ovn23.06 security update
RHSA-2026:11694: Important: ovn-2021 security update
RHSA-2026:11649: Important: freerdp security update
RHSA-2026:12033: Important: gvisor-tap-vsock security update
RHSA-2026:12030: Important: buildah security update
RHSA-2026:12031: Important: runc security update
RHSA-2026:11901: Important: squid security update
RHSA-2026:11814: Important: webkit2gtk3 security update
RHSA-2026:11813: Important: thunderbird security update
RHSA-2026:11804: Moderate: oci-seccomp-bpf-hook security update
RHSA-2026:11806: Important: gdk-pixbuf2 security update
RHSA-2026:11805: Important: firefox security update
RHSA-2026:11749: Important: buildah security update
RHSA-2026:11722: Important: python-urllib3 security update
RHSA-2026:11700: Important: ovn24.03 security update
RHSA-2026:11701: Important: ovn25.03 security update
RHSA-2026:11698: Important: ovn23.09 security update
RHSA-2026:11695: Important: ovn23.06 security update
RHSA-2026:11656: Important: xorg-x11-server-Xwayland security update
RHSA-2026:11635: Important: PackageKit security update
RHSA-2026:11651: Important: freerdp security update
RHSA-2026:10081: Important: OpenShift Container Platform 4.19.29 bug fix and security update
RHSA-2026:11504: Important: PackageKit security update

RHSA-2026:11509: Important: vim security update

An update for vim is now available for Red Hat Enterprise Linux 8.

Red Hat Product Security has rated this update as having a security impact of Important. A Common Vulnerability Scoring System (CVSS) base score, which gives a detailed severity rating, is available for each vulnerability from the CVE link(s) in the References section.

RHSA-2026:11509: Important: vim security update

RHSA-2026:11521: Important: sudo security update

An update for sudo is now available for Red Hat Enterprise Linux 8.

Red Hat Product Security has rated this update as having a security impact of Important. A Common Vulnerability Scoring System (CVSS) base score, which gives a detailed severity rating, is available for each vulnerability from the CVE link(s) in the References section.

RHSA-2026:11521: Important: sudo security update

RHSA-2026:11516: Important: pcs security update

An update for pcs is now available for Red Hat Enterprise Linux 9.4 Update Services for SAP Solutions.

Red Hat Product Security has rated this update as having a security impact of Important. A Common Vulnerability Scoring System (CVSS) base score, which gives a detailed severity rating, is available for each vulnerability from the CVE link(s) in the References section.

RHSA-2026:11516: Important: pcs security update

RHSA-2026:11510: Important: vim security update

An update for vim is now available for Red Hat Enterprise Linux 9.

Red Hat Product Security has rated this update as having a security impact of Important. A Common Vulnerability Scoring System (CVSS) base score, which gives a detailed severity rating, is available for each vulnerability from the CVE link(s) in the References section.

RHSA-2026:11510: Important: vim security update

RHSA-2026:11493: Important: pcs security update

An update for pcs is now available for Red Hat Enterprise Linux 8.4 Advanced Mission Critical Update Support and Red Hat Enterprise Linux 8.4 Extended Update Support Long-Life Add-On.

Red Hat Product Security has rated this update as having a security impact of Important. A Common Vulnerability Scoring System (CVSS) base score, which gives a detailed severity rating, is available for each vulnerability from the CVE link(s) in the References section.

RHSA-2026:11493: Important: pcs security update

RHSA-2026:11469: Important: pcs security update

An update for pcs is now available for Red Hat Enterprise Linux 9.2 Update Services for SAP Solutions.

Red Hat Product Security has rated this update as having a security impact of Important. A Common Vulnerability Scoring System (CVSS) base score, which gives a detailed severity rating, is available for each vulnerability from the CVE link(s) in the References section.

RHSA-2026:11469: Important: pcs security update

RHSA-2026:11495: Important: pcs security update

An update for pcs is now available for Red Hat Enterprise Linux 8.8 Update Services for SAP Solutions and Red Hat Enterprise Linux 8.8 Telecommunications Update Service.

Red Hat Product Security has rated this update as having a security impact of Important. A Common Vulnerability Scoring System (CVSS) base score, which gives a detailed severity rating, is available for each vulnerability from the CVE link(s) in the References section.

RHSA-2026:11495: Important: pcs security update

RHSA-2026:11494: Important: pcs security update

An update for pcs is now available for Red Hat Enterprise Linux 8.6 Advanced Mission Critical Update Support, Red Hat Enterprise Linux 8.6 Update Services for SAP Solutions, and Red Hat Enterprise Linux 8.6 Telecommunications Update Service.

Red Hat Product Security has rated this update as having a security impact of Important. A Common Vulnerability Scoring System (CVSS) base score, which gives a detailed severity rating, is available for each vulnerability from the CVE link(s) in the References section.

RHSA-2026:11494: Important: pcs security update

RHSA-2026:11471: Important: pcs security update

An update for pcs is now available for Red Hat Enterprise Linux 9.6 Extended Update Support.

Red Hat Product Security has rated this update as having a security impact of Important. A Common Vulnerability Scoring System (CVSS) base score, which gives a detailed severity rating, is available for each vulnerability from the CVE link(s) in the References section.

RHSA-2026:11471: Important: pcs security update

RHSA-2026:11470: Important: pcs security update

An update for pcs is now available for Red Hat Enterprise Linux 10.0 Extended Update Support.

Red Hat Product Security has rated this update as having a security impact of Important. A Common Vulnerability Scoring System (CVSS) base score, which gives a detailed severity rating, is available for each vulnerability from the CVE link(s) in the References section.

RHSA-2026:11470: Important: pcs security update

RHSA-2026:11454: Important: pcs security update

An update for pcs is now available for Red Hat Enterprise Linux 9.0 Update Services for SAP Solutions.

Red Hat Product Security has rated this update as having a security impact of Important. A Common Vulnerability Scoring System (CVSS) base score, which gives a detailed severity rating, is available for each vulnerability from the CVE link(s) in the References section.

RHSA-2026:11454: Important: pcs security update

RHSA-2026:7884: Important: Red Hat OpenStack Services on OpenShift 18.0.18 (openstack-nova) security update

An update for openstack-nova is now available for Red Hat OpenStack
Services on OpenShift 18.0.18 (Antelope).

Red Hat Product Security has rated this update as having a security impact
of Important. A Common Vulnerability Scoring System (CVSS) base score,
which gives a detailed severity rating, is available for each vulnerability
from the CVE link(s) in the References section.

RHSA-2026:7884: Important: Red Hat OpenStack Services on OpenShift 18.0.18 (openstack-nova) security update

RHSA-2026:11692: Important: xorg-x11-server security update

An update for xorg-x11-server is now available for Red Hat Enterprise Linux 8.

Red Hat Product Security has rated this update as having a security impact of Important. A Common Vulnerability Scoring System (CVSS) base score, which gives a detailed severity rating, is available for each vulnerability from the CVE link(s) in the References section.

RHSA-2026:11692: Important: xorg-x11-server security update

RHSA-2026:11702: Important: ovn25.09 security update

An update for ovn25.09 is now available for Fast Datapath for Red Hat Enterprise Linux 9.

Red Hat Product Security has rated this update as having a security impact of Important. A Common Vulnerability Scoring System (CVSS) base score, which gives a detailed severity rating, is available for each vulnerability from the CVE link(s) in the References section.

RHSA-2026:11702: Important: ovn25.09 security update

RHSA-2026:11696: Important: ovn23.06 security update

An update for ovn23.06 is now available for Fast Datapath for Red Hat Enterprise Linux 9.

Red Hat Product Security has rated this update as having a security impact of Important. A Common Vulnerability Scoring System (CVSS) base score, which gives a detailed severity rating, is available for each vulnerability from the CVE link(s) in the References section.

RHSA-2026:11696: Important: ovn23.06 security update

RHSA-2026:11694: Important: ovn-2021 security update

An update for ovn-2021 is now available for Fast Datapath for Red Hat Enterprise Linux 8.

Red Hat Product Security has rated this update as having a security impact of Important. A Common Vulnerability Scoring System (CVSS) base score, which gives a detailed severity rating, is available for each vulnerability from the CVE link(s) in the References section.

RHSA-2026:11694: Important: ovn-2021 security update

RHSA-2026:11649: Important: freerdp security update

An update for freerdp is now available for Red Hat Enterprise Linux 8.4 Advanced Mission Critical Update Support and Red Hat Enterprise Linux 8.4 Extended Update Support Long-Life Add-On.

Red Hat Product Security has rated this update as having a security impact of Important. A Common Vulnerability Scoring System (CVSS) base score, which gives a detailed severity rating, is available for each vulnerability from the CVE link(s) in the References section.

RHSA-2026:11649: Important: freerdp security update

RHSA-2026:12033: Important: gvisor-tap-vsock security update

An update for gvisor-tap-vsock is now available for Red Hat Enterprise Linux 9.4 Extended Update Support.

Red Hat Product Security has rated this update as having a security impact of Important. A Common Vulnerability Scoring System (CVSS) base score, which gives a detailed severity rating, is available for each vulnerability from the CVE link(s) in the References section.

RHSA-2026:12033: Important: gvisor-tap-vsock security update

RHSA-2026:12030: Important: buildah security update

An update for buildah is now available for Red Hat Enterprise Linux 9.4 Extended Update Support.

Red Hat Product Security has rated this update as having a security impact of Important. A Common Vulnerability Scoring System (CVSS) base score, which gives a detailed severity rating, is available for each vulnerability from the CVE link(s) in the References section.

RHSA-2026:12030: Important: buildah security update

RHSA-2026:12031: Important: runc security update

An update for runc is now available for Red Hat Enterprise Linux 9.4 Extended Update Support.

Red Hat Product Security has rated this update as having a security impact of Important. A Common Vulnerability Scoring System (CVSS) base score, which gives a detailed severity rating, is available for each vulnerability from the CVE link(s) in the References section.

RHSA-2026:12031: Important: runc security update

RHSA-2026:11901: Important: squid security update

An update for squid is now available for Red Hat Enterprise Linux 10.0 Extended Update Support.

Red Hat Product Security has rated this update as having a security impact of Important. A Common Vulnerability Scoring System (CVSS) base score, which gives a detailed severity rating, is available for each vulnerability from the CVE link(s) in the References section.

RHSA-2026:11901: Important: squid security update

RHSA-2026:11814: Important: webkit2gtk3 security update

An update for webkit2gtk3 is now available for Red Hat Enterprise Linux 8.8 Update Services for SAP Solutions and Red Hat Enterprise Linux 8.8 Telecommunications Update Service.

Red Hat Product Security has rated this update as having a security impact of Important. A Common Vulnerability Scoring System (CVSS) base score, which gives a detailed severity rating, is available for each vulnerability from the CVE link(s) in the References section.

RHSA-2026:11814: Important: webkit2gtk3 security update

RHSA-2026:11813: Important: thunderbird security update

An update for thunderbird is now available for Red Hat Enterprise Linux 10.0 Extended Update Support.

Red Hat Product Security has rated this update as having a security impact of Important. A Common Vulnerability Scoring System (CVSS) base score, which gives a detailed severity rating, is available for each vulnerability from the CVE link(s) in the References section.

RHSA-2026:11813: Important: thunderbird security update

RHSA-2026:11804: Moderate: oci-seccomp-bpf-hook security update

An update for oci-seccomp-bpf-hook is now available for Red Hat Enterprise Linux 9.2 Update Services for SAP Solutions.

Red Hat Product Security has rated this update as having a security impact of Moderate. A Common Vulnerability Scoring System (CVSS) base score, which gives a detailed severity rating, is available for each vulnerability from the CVE link(s) in the References section.

RHSA-2026:11804: Moderate: oci-seccomp-bpf-hook security update

RHSA-2026:11806: Important: gdk-pixbuf2 security update

An update for gdk-pixbuf2 is now available for Red Hat Enterprise Linux 8.2 Advanced Update Support.

Red Hat Product Security has rated this update as having a security impact of Important. A Common Vulnerability Scoring System (CVSS) base score, which gives a detailed severity rating, is available for each vulnerability from the CVE link(s) in the References section.

RHSA-2026:11806: Important: gdk-pixbuf2 security update

RHSA-2026:11805: Important: firefox security update

An update for firefox is now available for Red Hat Enterprise Linux 8.2 Advanced Update Support.

Red Hat Product Security has rated this update as having a security impact of Important. A Common Vulnerability Scoring System (CVSS) base score, which gives a detailed severity rating, is available for each vulnerability from the CVE link(s) in the References section.

RHSA-2026:11805: Important: firefox security update

RHSA-2026:11749: Important: buildah security update

An update for buildah is now available for Red Hat Enterprise Linux 9.6 Extended Update Support.

Red Hat Product Security has rated this update as having a security impact of Important. A Common Vulnerability Scoring System (CVSS) base score, which gives a detailed severity rating, is available for each vulnerability from the CVE link(s) in the References section.

RHSA-2026:11749: Important: buildah security update

RHSA-2026:11722: Important: python-urllib3 security update

An update for python-urllib3 is now available for Red Hat Enterprise Linux 6 Extended Lifecycle Support - EXTENSION.

Red Hat Product Security has rated this update as having a security impact of Important. A Common Vulnerability Scoring System (CVSS) base score, which gives a detailed severity rating, is available for each vulnerability from the CVE link(s) in the References section.

RHSA-2026:11722: Important: python-urllib3 security update

RHSA-2026:11700: Important: ovn24.03 security update

An update for ovn24.03 is now available for Fast Datapath for Red Hat Enterprise Linux 9.

Red Hat Product Security has rated this update as having a security impact of Important. A Common Vulnerability Scoring System (CVSS) base score, which gives a detailed severity rating, is available for each vulnerability from the CVE link(s) in the References section.

RHSA-2026:11700: Important: ovn24.03 security update

RHSA-2026:11701: Important: ovn25.03 security update

An update for ovn25.03 is now available for Fast Datapath for Red Hat Enterprise Linux 9.

Red Hat Product Security has rated this update as having a security impact of Important. A Common Vulnerability Scoring System (CVSS) base score, which gives a detailed severity rating, is available for each vulnerability from the CVE link(s) in the References section.

RHSA-2026:11701: Important: ovn25.03 security update

RHSA-2026:11698: Important: ovn23.09 security update

An update for ovn23.09 is now available for Fast Datapath for Red Hat Enterprise Linux 9.

Red Hat Product Security has rated this update as having a security impact of Important. A Common Vulnerability Scoring System (CVSS) base score, which gives a detailed severity rating, is available for each vulnerability from the CVE link(s) in the References section.

RHSA-2026:11698: Important: ovn23.09 security update

RHSA-2026:11695: Important: ovn23.06 security update

An update for ovn23.06 is now available for Fast Datapath for Red Hat Enterprise Linux 8.

Red Hat Product Security has rated this update as having a security impact of Important. A Common Vulnerability Scoring System (CVSS) base score, which gives a detailed severity rating, is available for each vulnerability from the CVE link(s) in the References section.

RHSA-2026:11695: Important: ovn23.06 security update

RHSA-2026:11656: Important: xorg-x11-server-Xwayland security update

An update for xorg-x11-server-Xwayland is now available for Red Hat Enterprise Linux 8.

Red Hat Product Security has rated this update as having a security impact of Important. A Common Vulnerability Scoring System (CVSS) base score, which gives a detailed severity rating, is available for each vulnerability from the CVE link(s) in the References section.

RHSA-2026:11656: Important: xorg-x11-server-Xwayland security update

RHSA-2026:11635: Important: PackageKit security update

An update for PackageKit is now available for Red Hat Enterprise Linux 8.

Red Hat Product Security has rated this update as having a security impact of Important. A Common Vulnerability Scoring System (CVSS) base score, which gives a detailed severity rating, is available for each vulnerability from the CVE link(s) in the References section.

RHSA-2026:11635: Important: PackageKit security update

RHSA-2026:11651: Important: freerdp security update

An update for freerdp is now available for Red Hat Enterprise Linux 8.2 Advanced Update Support.

Red Hat Product Security has rated this update as having a security impact of Important. A Common Vulnerability Scoring System (CVSS) base score, which gives a detailed severity rating, is available for each vulnerability from the CVE link(s) in the References section.

RHSA-2026:11651: Important: freerdp security update

RHSA-2026:10081: Important: OpenShift Container Platform 4.19.29 bug fix and security update

Red Hat OpenShift Container Platform release 4.19.29 is now available with updates to packages and images that fix several bugs and add enhancements.

This release includes a security update for Red Hat OpenShift Container Platform 4.19.

Red Hat Product Security has rated this update as having a security impact of Important. A Common Vulnerability Scoring System (CVSS) base score, which gives a detailed severity rating, is available for each vulnerability from the CVE link(s) in the References section.

RHSA-2026:10081: Important: OpenShift Container Platform 4.19.29 bug fix and security update

RHSA-2026:11504: Important: PackageKit security update

An update for PackageKit is now available for Red Hat Enterprise Linux 9.

Red Hat Product Security has rated this update as having a security impact of Important. A Common Vulnerability Scoring System (CVSS) base score, which gives a detailed severity rating, is available for each vulnerability from the CVE link(s) in the References section.

RHSA-2026:11504: Important: PackageKit security update