Red Hat Enterprise Linux (libpcap): Schwachstelle ermöglicht Offenlegung von Informationen und Codeausführung
WID-SEC-2026-3691 · first 01.10.2026 · updated 28.10.2026 · CVSS 8,7
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 (libpcap) ausnutzen, um Informationen offenzulegen und um beliebigen Programmcode 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
- Informationen offenzulegen
- beliebigen Programmcode auszuführen
Am I affected?
Affected according to the BSI:
- Red Hat Enterprise Linux
- RESF Rocky Linux
- Oracle Linux
- Red Hat Enterprise Linux 9
- 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-2026:74441 vom 2026-09-30 access.redhat.com
- Red Hat Security Advisory RHSA-2026:74442 vom 2026-09-30 access.redhat.com
- RedHat Advisory vom 2026-09-30 access.redhat.com
- Oracle Linux Security Advisory ELSA-2026-74442 vom 2026-10-01 linux.oracle.com
- Rocky Linux Security Advisory RLSA-2026:74441 vom 2026-10-02 errata.build.resf.org
- Oracle Linux Security Advisory ELSA-2026-74441 vom 2026-10-02 linux.oracle.com
- Rocky Linux Security Advisory RLSA-2026:74442 vom 2026-10-02 errata.build.resf.org
- Oracle Linux Security Advisory ELSA-2026-76045 vom 2026-10-06 linux.oracle.com
- Red Hat Security Advisory RHSA-2026:76045 vom 2026-10-05 access.redhat.com
- Rocky Linux Security Advisory RLSA-2026:76045 vom 2026-10-07 errata.build.resf.org
- Red Hat Security Advisory RHSA-2026:89197 vom 2026-10-27 access.redhat.com
CVE: CVE-2026-0799
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.