Red Hat Enterprise Linux: Schwachstelle ermöglicht Privilegieneskalation und Offenlegung von Informationen
WID-SEC-2026-0756 · first 17.03.2026 · updated 02.09.2026 · CVSS 6,8
What it is about
Red Hat Enterprise Linux (RHEL) ist eine populäre Linux-Distribution. Ein lokaler Angreifer kann eine Schwachstelle in Red Hat Enterprise Linux ausnutzen, um seine Privilegien zu erhöhen, und um Informationen offenzulegen.
Under what conditions?
Only with access to the device or an account on it. Often the second step after a phishing email.
What can happen in the worst case
An attacker could use the vulnerability to
- seine Privilegien zu erhöhen
- Informationen offenzulegen
Am I affected?
Affected according to the BSI:
- Red Hat Enterprise Linux
- Fedora Linux
- SUSE Linux
- Oracle Linux
- SUSE openSUSE
- RESF Rocky Linux
- Red Hat Enterprise Linux <10
- Red Hat Enterprise Linux = 9
- Amazon Linux 2
- Ubuntu Linux
The installed version is usually shown under “Help → About” or in the device’s admin interface.
What helps?
Update to at least:
- Red Hat Enterprise Linux 10
Is the vulnerability already being exploited?
None of the CVEs is in the CISA catalogue of exploited vulnerabilities. That does not mean there are no attacks, only that none are documented.
Information and sources
- Original BSI advisory (WID)
- Red Hat Security Advisory vom 2026-03-16 access.redhat.com
- RedHat Customer Portal vom 2026-03-16 access.redhat.com
- Oracle Linux Security Advisory ELSA-2026-4717 vom 2026-03-18 linux.oracle.com
- Red Hat Security Advisory RHSA-2026:5587 vom 2026-03-24 access.redhat.com
- Red Hat Security Advisory RHSA-2026:5603 vom 2026-03-24 access.redhat.com
- Red Hat Security Advisory RHSA-2026:5917 vom 2026-03-26 access.redhat.com
- Red Hat Security Advisory RHSA-2026:5919 vom 2026-03-26 access.redhat.com
- Rocky Linux Security Advisory RLSA-2026:4717 vom 2026-03-27 errata.build.resf.org
- Red Hat Security Advisory RHSA-2026:6006 vom 2026-03-30 access.redhat.com
- Rocky Linux Security Advisory RLSA-2026:5587 vom 2026-04-07 errata.build.resf.org
- SUSE Security Update SUSE-SU-2026:21455-1 vom 2026-05-04 lists.suse.com
- Fedora Security Advisory FEDORA-2026-1273C7855D vom 2026-05-05 bodhi.fedoraproject.org
- Fedora Security Advisory FEDORA-2026-D63E3968E8 vom 2026-05-05 bodhi.fedoraproject.org
- Fedora Security Advisory FEDORA-2026-6C3B6EC624 vom 2026-05-05 bodhi.fedoraproject.org
- Fedora Security Advisory FEDORA-2026-13E696D26F vom 2026-05-05 bodhi.fedoraproject.org
- Amazon Linux Security Advisory ALAS2-2026-3283 vom 2026-05-14 alas.aws.amazon.com
- SUSE Security Update SUSE-SU-2026:22293-1 vom 2026-06-29 lists.suse.com
- openSUSE Security Update OPENSUSE-SU-2026:21059-1 vom 2026-06-30 lists.opensuse.org
- SUSE Security Update SUSE-SU-2026:22365-1 vom 2026-07-01 lists.suse.com
- Ubuntu Security Notice USN-8707-1 vom 2026-09-01 ubuntu.com
CVE: CVE-2026-23893
Source: BSI warning and information service (CERT-Bund); CISA. The assessment of the conditions is my reading of the BSI text; the external pages are in their original language.