Red Hat Enterprise Linux (gawk): Mehrere Schwachstellen
WID-SEC-2026-3649 · first 30.09.2026 · updated 28.10.2026 · CVSS 6,2
What it is about
Red Hat Enterprise Linux (RHEL) ist eine populäre Linux-Distribution. Ein lokaler Angreifer kann mehrere Schwachstellen in Red Hat Enterprise Linux ausnutzen, um einen Denial of Service Angriff durchzuführen, Speicherbeschädigungen zu verursachen und 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 durchzuführen
- Speicherbeschädigungen zu verursachen
- möglicherweise beliebigen Code auszuführen
Am I affected?
Affected according to the BSI:
- Red Hat Enterprise Linux
- IBM MQ Operator
- RESF Rocky Linux
- Oracle Linux
- Red Hat Enterprise Linux 10
- Red Hat Enterprise Linux 8
- Red Hat Enterprise Linux 9
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-2026:73429 vom 2026-09-29 access.redhat.com
- Red Hat Security Advisory RHSA-2026:73511 vom 2026-09-29 access.redhat.com
- Red Hat Security Advisory RHSA-2026:73512 vom 2026-09-29 access.redhat.com
- Rocky Linux Security Advisory RLSA-2026:73512 vom 2026-09-30 errata.build.resf.org
- Oracle Linux Security Advisory ELSA-2026-73429 vom 2026-09-30 linux.oracle.com
- Oracle Linux Security Advisory ELSA-2026-73512 vom 2026-09-30 linux.oracle.com
- Rocky Linux Security Advisory RLSA-2026:73429 vom 2026-09-30 errata.build.resf.org
- Oracle Linux Security Advisory ELSA-2026-73511 vom 2026-10-01 linux.oracle.com
- Rocky Linux Security Advisory RLSA-2026:73511 vom 2026-10-02 errata.build.resf.org
- Red Hat Security Advisory RHSA-2026:79357 vom 2026-10-08 access.redhat.com
- IBM Security Bulletin 7292667 vom 2026-10-15 www.ibm.com
- Red Hat Security Advisory RHSA-2026:89197 vom 2026-10-27 access.redhat.com
CVE: CVE-2026-40467, CVE-2026-40468, CVE-2026-40553
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.