Red Hat Product Security recently published a comprehensive set of advisories that target numerous software packages across multiple RHEL support tracks. Several updates carry critical or important ratings, meaning administrators must review the accompanying vulnerability scores before deploying patches. The affected components span essential infrastructure tools like the Linux kernel and OpenShift alongside everyday applications such as Firefox and Thunderbird. System operators should schedule these installations immediately to close known security gaps and preserve overall stability across their enterprise environments.

RHSA-2026:26533: Important: dracut security update
RHSA-2026:26540: Important: valkey security update
RHSA-2026:26539: Important: thunderbird security update
RHSA-2026:26525: Important: postgresql:16 security update
RHSA-2026:26521: Important: thunderbird security update
RHSA-2026:26524: Important: postgresql:16 security update
RHSA-2026:25180: Important: OpenShift Container Platform 4.18.44 packages and security update
RHSA-2026:26515: Important: kernel security update
RHSA-2026:26492: Important: firefox security update
RHSA-2026:26493: Important: firefox security update
RHSA-2026:26491: Important: firefox security update
RHSA-2026:26018: Important: Red Hat build of Quarkus 3.27.4.SP1 security update
RHSA-2026:26639: Important: redhat-ds:12 security update
RHSA-2026:26630: Important: firefox security update
RHSA-2026:26629: Important: firefox security update
RHSA-2026:26590: Important: xorg-x11-server-Xwayland security, bug fix, and enhancement update
RHSA-2026:26606: Important: firefox security update
RHSA-2026:26570: Important: kernel security update
RHSA-2026:26562: Important: xorg-x11-server-Xwayland security, bug fix, and enhancement update
RHSA-2026:26564: Important: dovecot security update
RHSA-2026:26563: Important: kernel security update
RHSA-2026:26561: Important: postgresql:15 security update
RHSA-2026:26586: Important: Red Hat build of Apache Camel 4.18 for Quarkus 3.33 security update
RHSA-2026:26194: Important: Red Hat build of Quarkus 3.20.6.SP2 security update
RHSA-2026:26709: Important: xorg-x11-server security, bug fix, and enhancement update
RHSA-2026:25181: Critical: OpenShift Container Platform 4.18.44 bug fix and security update
RHSA-2026:26655: Important: ruby:3.3 security update
RHSA-2026:26610: Important: xorg-x11-server security, bug fix, and enhancement update
RHSA-2026:26017: Important: Red Hat build of Quarkus 3.33.2.SP1 security update
RHSA-2026:26599: Important: redhat-ds:12 security update
RHSA-2026:26597: Important: redhat-ds:11 security update
RHSA-2026:26567: Moderate: libexif security update
RHSA-2026:26551: Important: firefox security update
RHSA-2026:26536: Important: thunderbird security update
RHSA-2026:26532: Important: dracut security update
RHSA-2026:26534: Important: dracut security update
RHSA-2026:25200: Critical: OpenShift Container Platform 4.19.34 bug fix and security update
RHSA-2026:26535: Critical: kernel security, bug fix, and enhancement update

RHSA-2026:26533: Important: dracut security update

An update for dracut 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-2026:26533: Important: dracut security update

RHSA-2026:26540: Important: valkey security update

An update for valkey 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-2026:26540: Important: valkey security update

RHSA-2026:26539: 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-2026:26539: Important: thunderbird security update

RHSA-2026:26525: Important: postgresql:16 security update

An update for the postgresql:16 module 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-2026:26525: Important: postgresql:16 security update

RHSA-2026:26521: Important: thunderbird security update

An update for thunderbird 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-2026:26521: Important: thunderbird security update

RHSA-2026:26524: Important: postgresql:16 security update

An update for the postgresql:16 module 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-2026:26524: Important: postgresql:16 security update

RHSA-2026:25180: Important: OpenShift Container Platform 4.18.44 packages and security update

Red Hat OpenShift Container Platform release 4.18.44 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 4.18.

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-2026:25180: Important: OpenShift Container Platform 4.18.44 packages and security update

RHSA-2026:26515: Important: kernel security update

An update for kernel 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-2026:26515: Important: kernel security update

RHSA-2026:26492: Important: firefox security update

An update for firefox 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-2026:26492: Important: firefox security update

RHSA-2026:26493: Important: firefox security update

An update for firefox 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-2026:26493: Important: firefox security update

RHSA-2026:26491: Important: firefox security update

An update for firefox 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-2026:26491: Important: firefox security update

RHSA-2026:26018: Important: Red Hat build of Quarkus 3.27.4.SP1 security update

An update is now available for Red Hat build of Quarkus.

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. For more information, see the CVE links in the References section.

RHSA-2026:26018: Important: Red Hat build of Quarkus 3.27.4.SP1 security update

RHSA-2026:26639: Important: redhat-ds:12 security update

An update for the redhat-ds:12 module is now available for Red Hat Directory Server 12.2 E4S for RHEL 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-2026:26639: Important: redhat-ds:12 security update

RHSA-2026:26630: Important: firefox security update

An update for firefox 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-2026:26630: Important: firefox security update

RHSA-2026:26629: Important: firefox security update

An update for firefox 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-2026:26629: Important: firefox security update

RHSA-2026:26590: Important: xorg-x11-server-Xwayland security, bug fix, and enhancement update

An update for xorg-x11-server-Xwayland 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-2026:26590: Important: xorg-x11-server-Xwayland security, bug fix, and enhancement update

RHSA-2026:26606: Important: firefox security update

An update for firefox is now available for Red Hat Enterprise Linux 8.6 Advanced Mission Critical Update Support and Red Hat Enterprise Linux 8.6 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-2026:26606: Important: firefox security update

RHSA-2026:26570: Important: kernel security update

An update for kernel is now available for Red Hat Enterprise Linux 8.6 Advanced Mission Critical Update Support and Red Hat Enterprise Linux 8.6 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-2026:26570: Important: kernel security update

RHSA-2026:26562: Important: xorg-x11-server-Xwayland security, bug fix, and enhancement 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-2026:26562: Important: xorg-x11-server-Xwayland security, bug fix, and enhancement update

RHSA-2026:26564: Important: dovecot security update

An update for dovecot is now available for Red Hat Enterprise Linux 7 Extended Lifecycle 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-2026:26564: Important: dovecot security update

RHSA-2026:26563: Important: kernel security update

An update for kernel 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-2026:26563: Important: kernel security update

RHSA-2026:26561: Important: postgresql:15 security update

An update for the postgresql:15 module 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-2026:26561: Important: postgresql:15 security update

RHSA-2026:26586: Important: Red Hat build of Apache Camel 4.18 for Quarkus 3.33 security update

A security update for Red Hat build of Apache Camel 4.18 for Quarkus 3.33 is now available.

This text-only errata provides information about enhancements that improve your developer experience and ensure the security and stability of your applications.

Red Hat Product Security has rated this update as having a security impact of Important.

RHSA-2026:26586: Important: Red Hat build of Apache Camel 4.18 for Quarkus 3.33 security update

RHSA-2026:26194: Important: Red Hat build of Quarkus 3.20.6.SP2 security update

An update is now available for Red Hat build of Quarkus.

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. For more information, see the CVE links in the References section.

RHSA-2026:26194: Important: Red Hat build of Quarkus 3.20.6.SP2 security update

RHSA-2026:26709: Important: xorg-x11-server security, bug fix, and enhancement 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-2026:26709: Important: xorg-x11-server security, bug fix, and enhancement update

RHSA-2026:25181: Critical: OpenShift Container Platform 4.18.44 bug fix and security update

Red Hat OpenShift Container Platform release 4.18.44 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 4.18.

Red Hat Product Security has rated this update as having a security impact of Critical. 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-2026:25181: Critical: OpenShift Container Platform 4.18.44 bug fix and security update

RHSA-2026:26655: Important: ruby:3.3 security update

An update for the ruby:3.3 module 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-2026:26655: Important: ruby:3.3 security update

RHSA-2026:26610: Important: xorg-x11-server security, bug fix, and enhancement update

An update for xorg-x11-server 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-2026:26610: Important: xorg-x11-server security, bug fix, and enhancement update

RHSA-2026:26017: Important: Red Hat build of Quarkus 3.33.2.SP1 security update

An update is now available for Red Hat build of Quarkus.

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. For more information, see the CVE links in the References section.

RHSA-2026:26017: Important: Red Hat build of Quarkus 3.33.2.SP1 security update

RHSA-2026:26599: Important: redhat-ds:12 security update

An update for the redhat-ds:12 module is now available for Red Hat Directory Server 12.4 E4S for RHEL 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-2026:26599: Important: redhat-ds:12 security update

RHSA-2026:26597: Important: redhat-ds:11 security update

An update for the redhat-ds:11 module is now available for Red Hat Directory Server 11.7 E4S for RHEL 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-2026:26597: Important: redhat-ds:11 security update

RHSA-2026:26567: Moderate: libexif security update

An update for libexif is now available for Red Hat Enterprise Linux 7 Extended Lifecycle Support.

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-2026:26567: Moderate: libexif security update

RHSA-2026:26551: Important: firefox security update

An update for firefox is now available for Red Hat Enterprise Linux 7 Extended Lifecycle 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-2026:26551: Important: firefox security update

RHSA-2026:26536: Important: thunderbird security update

An update for thunderbird is now available for Red Hat Enterprise Linux 8.6 Advanced Mission Critical Update Support and Red Hat Enterprise Linux 8.6 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-2026:26536: Important: thunderbird security update

RHSA-2026:26532: Important: dracut security update

An update for dracut is now available for Red Hat Enterprise Linux 10.

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-2026:26532: Important: dracut security update

RHSA-2026:26534: Important: dracut security update

An update for dracut 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-2026:26534: Important: dracut security update

RHSA-2026:25200: Critical: OpenShift Container Platform 4.19.34 bug fix and security update

Red Hat OpenShift Container Platform release 4.19.34 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 Critical. 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-2026:25200: Critical: OpenShift Container Platform 4.19.34 bug fix and security update

RHSA-2026:26535: Critical: kernel security, bug fix, and enhancement update

An update for kernel 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 Critical. 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-2026:26535: Critical: kernel security, bug fix, and enhancement update