Red Hat Enterprise Linux (cjose): Schwachstelle ermöglicht Manipulation von Daten
WID-SEC-2026-3863 · first 12.10.2026 · updated 15.10.2026 · CVSS 9,1
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 (cjose) 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:
- 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-2026:80605 vom 2026-10-11 access.redhat.com
- NIST Vulnerability Database vom 2026-10-11 nvd.nist.gov
- Oracle Linux Security Advisory ELSA-2026-80605 vom 2026-10-12 linux.oracle.com
- Oracle Linux Security Advisory ELSA-2026-80605 vom 2026-10-12 linux.oracle.com
- Rocky Linux Security Advisory RLSA-2026:80605 vom 2026-10-13 errata.build.resf.org
- Red Hat Security Advisory RHSA-2026:83224 vom 2026-10-15 access.redhat.com
CVE: CVE-2026-53939
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.