Red Hat Enterprise Linux (rrdcached): Schwachstelle ermöglicht Codeausführung und DoS
WID-SEC-2026-2141 · first 01.07.2026 · updated 28.09.2026 · CVSS 7,8
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 einen Denial-of-Service-Angriff zu verursachen oder möglicherweise beliebigen Code auszuführen.
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
- einen Denial-of-Service-Angriff zu verursachen oder möglicherweise beliebigen Code auszuführen
Am I affected?
Affected according to the BSI:
- Red Hat Enterprise Linux
- Oracle Linux
- RESF Rocky Linux
- SUSE Linux
- SUSE openSUSE
- Red Hat Enterprise Linux 10
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)
- Rocky Linux Security Advisory RLSA-2026:34156 vom 2026-07-05 errata.build.resf.org
- Rocky Linux Security Advisory RLSA-2026:34155 vom 2026-07-04 errata.build.resf.org
- Red Hat Security Advisory RHSA-2026:34155 vom 2026-07-01 access.redhat.com
- Red Hat Security Advisory RHSA-2026:34156 vom 2026-07-01 access.redhat.com
- Oracle Linux Security Advisory ELSA-2026-34155 vom 2026-07-02 linux.oracle.com
- Red Hat Security Advisory RHSA-2026:33731 vom 2026-06-30 access.redhat.com
- Oracle Linux Security Advisory ELSA-2026-34156 vom 2026-07-02 linux.oracle.com
- Rocky Linux Security Advisory RLSA-2026:33731 vom 2026-07-07 errata.build.resf.org
- Oracle Linux Security Advisory ELSA-2026-33731 vom 2026-07-17 linux.oracle.com
- SUSE Security Update SUSE-SU-2026:3449-1 vom 2026-08-03 lists.suse.com
- SUSE Security Update SUSE-SU-2026:3468-1 vom 2026-08-04 lists.suse.com
- openSUSE Security Update OPENSUSE-SU-2026:21525-1 vom 2026-08-05 lists.opensuse.org
- SUSE Security Update SUSE-SU-2026:23119-1 vom 2026-08-14 lists.suse.com
- SUSE Security Update SUSE-SU-2026:23141-1 vom 2026-08-14 lists.suse.com
- Red Hat Security Advisory RHSA-2026:68702 vom 2026-09-17 access.redhat.com
- Red Hat Security Advisory RHSA-2026:71600 vom 2026-09-25 access.redhat.com
- Red Hat Security Advisory RHSA-2026:72278 vom 2026-09-28 access.redhat.com
- Red Hat Security Advisory RHSA-2026:72277 vom 2026-09-28 access.redhat.com
CVE: CVE-2026-43958
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.