Red Hat Enterprise Linux (undici-nodejs): Mehrere Schwachstellen
WID-SEC-2026-3640 · first 30.09.2026 · updated 20.10.2026 · CVSS 7,4
What it is about
Red Hat Enterprise Linux (RHEL) ist eine populäre Linux-Distribution. Ein entfernter, anonymer Angreifer kann mehrere Schwachstellen in Red Hat Enterprise Linux ausnutzen, um Daten zu manipulieren, Informationen offenzulegen, Sicherheitsmaßnahmen zu umgehen oder einen Denial-of-Service-Zustand zu verursachen.
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
- Daten zu manipulieren
- Informationen offenzulegen
- Sicherheitsmaßnahmen zu umgehen oder einen Denial-of-Service-Zustand zu verursachen
Am I affected?
Affected according to the BSI:
- Red Hat Enterprise Linux
- RESF Rocky Linux
- Oracle Linux
- 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)
- Red Hat Security Advisory RHSA-2026:73428 vom 2026-09-29 access.redhat.com
- Red Hat Security Advisory RHSA-2026:73838 vom 2026-09-30 access.redhat.com
- Rocky Linux Security Advisory RLSA-2026:73838 vom 2026-09-30 errata.build.resf.org
- Rocky Linux Security Advisory RLSA-2026:74085 vom 2026-10-01 errata.build.resf.org
- Oracle Linux Security Advisory ELSA-2026-73838 vom 2026-09-30 linux.oracle.com
- Red Hat Security Advisory RHSA-2026:74085 vom 2026-10-01 access.redhat.com
- Rocky Linux Security Advisory RLSA-2026:73428 vom 2026-10-01 errata.build.resf.org
- Red Hat Security Advisory RHSA-2026:74609 vom 2026-10-01 access.redhat.com
- Red Hat Security Advisory RHSA-2026:75864 vom 2026-10-06 access.redhat.com
- Rocky Linux Security Advisory RLSA-2026:75870 vom 2026-10-06 errata.build.resf.org
- Red Hat Security Advisory RHSA-2026:75870 vom 2026-10-05 access.redhat.com
- Rocky Linux Security Advisory RLSA-2026:75864 vom 2026-10-06 errata.build.resf.org
- Oracle Linux Security Advisory ELSA-2026-75864 vom 2026-10-06 linux.oracle.com
- Oracle Linux Security Advisory ELSA-2026-73428 vom 2026-10-07 linux.oracle.com
- Red Hat Security Advisory RHSA-2026:79088 vom 2026-10-08 access.redhat.com
- Red Hat Security Advisory RHSA-2026:76750 vom 2026-10-08 access.redhat.com
- Rocky Linux Security Advisory RLSA-2026:76750 vom 2026-10-08 errata.build.resf.org
- Oracle Linux Security Advisory ELSA-2026-74085 vom 2026-10-09 linux.oracle.com
- Oracle Linux Security Advisory ELSA-2026-75870 vom 2026-10-13 linux.oracle.com
- Red Hat Security Advisory RHSA-2026:84703 vom 2026-10-19 access.redhat.com
- Red Hat Security Advisory RHSA-2026:84589 vom 2026-10-19 access.redhat.com
CVE: CVE-2026-19534, CVE-2026-84961, CVE-2026-85152
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.