Red Hat Enterprise Linux (unbound): Schwachstelle ermöglicht Manipulation von Daten
WID-SEC-2025-1656 · first 28.07.2025 · updated 28.09.2026 · 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 (unbound) ausnutzen, um Daten zu manipulieren.
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
Am I affected?
Affected according to the BSI:
- Debian Linux
- Amazon Linux 2
- Red Hat Enterprise Linux
- Oracle Linux
- RESF Rocky Linux
- Red Hat Enterprise Linux 8
- Red Hat OpenShift Container Platform
- Red Hat Enterprise Linux 10
- Red Hat Enterprise Linux 9
- Red Hat OpenShift Container Platform <4.18.27
The installed version is usually shown under “Help → About” or in the device’s admin interface.
What helps?
Update to at least:
- Red Hat OpenShift Container Platform 4.18.27
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 2025-07-27 access.redhat.com
- RedHat Customer Portal vom 2025-07-27 access.redhat.com
- Oracle Linux Security Advisory ELSA-2025-11884 vom 2025-07-29 linux.oracle.com
- Oracle Linux Security Advisory ELSA-2025-11849 vom 2025-07-29 linux.oracle.com
- Red Hat Security Advisory RHSA-2025:12064 vom 2025-07-29 access.redhat.com
- Oracle Linux Security Advisory ELSA-2025-12064 vom 2025-07-30 linux.oracle.com
- Red Hat Security Advisory RHSA-2025:12416 vom 2025-07-31 access.redhat.com
- Red Hat Security Advisory RHSA-2025:12520 vom 2025-08-04 access.redhat.com
- Red Hat Security Advisory RHSA-2025:12523 vom 2025-08-04 access.redhat.com
- Amazon Linux Security Advisory ALAS2UNBOUND-1.17-2025-005 vom 2025-08-05 alas.aws.amazon.com
- Amazon Linux Security Advisory ALAS2-2025-2951 vom 2025-08-05 alas.aws.amazon.com
- RedHat Security Advisory access.redhat.com
- Red Hat Security Advisory RHSA-2025:13575 vom 2025-08-11 access.redhat.com
- Red Hat Security Advisory RHSA-2025:13576 vom 2025-08-11 access.redhat.com
- Red Hat Security Advisory RHSA-2025:13577 vom 2025-08-11 access.redhat.com
- Debian Security Advisory DLA-4280 vom 2025-08-24 lists.debian.org
- Debian Security Advisory DSA-5987 vom 2025-08-28 lists.debian.org
- Red Hat Security Advisory RHSA-2025:15397 vom 2025-10-22 access.redhat.com
- Red Hat Security Advisory RHSA-2025:18218 vom 2025-10-22 access.redhat.com
- Red Hat Security Advisory RHSA-2025:18240 vom 2025-10-23 access.redhat.com
- Red Hat Security Advisory RHSA-2025:19046 vom 2025-10-29 access.redhat.com
- Red Hat Security Advisory RHSA-2025:19041 vom 2025-10-30 access.redhat.com
- Rocky Linux Security Advisory RLSA-2025:11884 vom 2026-05-29 errata.build.resf.org
- Red Hat Security Advisory RHSA-2026:62549 vom 2026-09-10 access.redhat.com
- Red Hat Security Advisory RHSA-2026:67857 vom 2026-09-28 access.redhat.com
CVE: CVE-2025-5994
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.