Red Hat Enterprise Linux (libyang): Schwachstelle ermöglicht Denial of Service
WID-SEC-2026-1820 · first 09.06.2026 · updated 09.09.2026 · CVSS 7,5
What it is about
Red Hat Enterprise Linux (RHEL) ist eine populäre Linux-Distribution. Ein entfernter, anonymer Angreifer kann eine Schwachstelle in Red Hat Enterprise Linux ausnutzen, um einen Denial of Service Angriff durchzuführen oder potenziell beliebigen Code auszuführen.
Under what conditions?
Over the network and without logging in. This is the most dangerous combination: attackers can scan reachable devices automatically.
What can happen in the worst case
An attacker could use the vulnerability to
- einen Denial of Service Angriff durchzuführen oder potenziell beliebigen Code auszuführen
Am I affected?
Affected according to the BSI:
- Red Hat Enterprise Linux
- SUSE Linux
- Oracle Linux
- SUSE openSUSE
- RESF Rocky Linux
- Red Hat Enterprise Linux 8
The installed version is usually shown under “Help → About” or in the device’s admin interface.
What helps?
Install the updates provided by the vendor; details in the sources below.
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 RHSA-2026:24545 vom 2026-06-08 access.redhat.com
- Red Hat Security Advisory RHSA-2026:24758 vom 2026-06-09 access.redhat.com
- Oracle Linux Security Advisory ELSA-2026-24545 vom 2026-06-10 linux.oracle.com
- Red Hat Security Advisory RHSA-2026:25051 vom 2026-06-10 access.redhat.com
- SUSE Security Update SUSE-SU-2026:2337-1 vom 2026-06-10 lists.suse.com
- SUSE Security Update SUSE-SU-2026:2335-1 vom 2026-06-10 lists.suse.com
- Rocky Linux Security Advisory RLSA-2026:24545 vom 2026-06-11 errata.build.resf.org
- SUSE Security Update SUSE-SU-2026:2334-1 vom 2026-06-10 lists.suse.com
- SUSE Security Update SUSE-SU-2026:2381-1 vom 2026-06-12 lists.suse.com
- Rocky Linux Security Advisory RLSA-2026:25051 vom 2026-06-13 errata.build.resf.org
- SUSE Security Update SUSE-SU-2026:22208-1 vom 2026-06-23 lists.suse.com
- SUSE Security Update SUSE-SU-2026:22200-1 vom 2026-06-23 lists.suse.com
- openSUSE Security Update OPENSUSE-SU-2026:21113-1 vom 2026-06-30 lists.opensuse.org
- Oracle Linux Security Advisory ELSA-2026-25051 vom 2026-07-08 oss.oracle.com
- Oracle Linux Security Advisory ELSA-2026-25051 vom 2026-07-08 linux.oracle.com
- Oracle Linux Security Advisory ELSA-2026-24758 vom 2026-07-17 linux.oracle.com
- Red Hat Security Advisory RHSA-2026:49666 vom 2026-08-03 access.redhat.com
- Red Hat Security Advisory RHSA-2026:51339 vom 2026-08-06 access.redhat.com
- Red Hat Security Advisory RHSA-2026:51368 vom 2026-08-06 access.redhat.com
- Red Hat Security Advisory RHSA-2026:51351 vom 2026-08-06 access.redhat.com
- Red Hat Security Advisory RHSA-2026:65477 vom 2026-09-08 access.redhat.com
- Red Hat Security Advisory RHSA-2026:65467 vom 2026-09-08 access.redhat.com
- Red Hat Security Advisory RHSA-2026:65508 vom 2026-09-08 access.redhat.com
CVE: CVE-2026-44673
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.