Red Hat Enterprise Linux (openEXR): Schwachstelle ermöglicht Codeausführung
WID-SEC-2026-1440 · first 11.05.2026 · updated 22.07.2026 · CVSS 8,8
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 (openEXR) ausnutzen, um beliebigen Programmcode auszuführen.
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
- beliebigen Programmcode auszuführen
Am I affected?
Affected according to the BSI:
- Red Hat Enterprise Linux
- Oracle Linux
- RESF Rocky Linux
- Red Hat Enterprise Linux <10
- Red Hat Enterprise Linux <9
- RESF Rocky Linux 9
- RESF Rocky Linux 10
The installed version is usually shown under “Help → About” or in the device’s admin interface.
What helps?
Update to at least:
- Red Hat Enterprise Linux 10
- Red Hat Enterprise Linux 9
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-2026:15887 vom 2026-05-10 access.redhat.com
- Red Hat Security Advisory RHSA-2026:15888 vom 2026-05-10 access.redhat.com
- Oracle Linux Security Advisory ELSA-2026-15888 vom 2026-05-12 linux.oracle.com
- Oracle Linux Security Advisory ELSA-2026-15887 vom 2026-05-12 linux.oracle.com
- Red Hat Security Advisory RHSA-2026:17659 vom 2026-05-14 access.redhat.com
- Rocky Linux Security Advisory RLSA-2026:15887 vom 2026-05-13 errata.build.resf.org
- Red Hat Security Advisory RHSA-2026:17658 vom 2026-05-14 access.redhat.com
- Red Hat Security Advisory RHSA-2026:17660 vom 2026-05-14 access.redhat.com
- Red Hat Security Advisory RHSA-2026:17656 vom 2026-05-14 access.redhat.com
- Rocky Linux Security Advisory RLSA-2026:15888 vom 2026-05-13 errata.build.resf.org
- Red Hat Security Advisory RHSA-2026:19146 vom 2026-05-19 access.redhat.com
- Red Hat Security Advisory RHSA-2026:19359 vom 2026-05-19 access.redhat.com
- Rocky Linux Security Advisory RLSA-2026:19359 vom 2026-05-20 errata.build.resf.org
- Oracle Linux Security Advisory ELSA-2026-19359 vom 2026-06-25 linux.oracle.com
- Red Hat Security Advisory RHSA-2026:30078 vom 2026-06-25 access.redhat.com
- Red Hat Security Advisory RHSA-2026:30089 vom 2026-06-25 access.redhat.com
- Red Hat Security Advisory RHSA-2026:30087 vom 2026-06-25 access.redhat.com
- Red Hat Security Advisory RHSA-2026:30088 vom 2026-06-25 access.redhat.com
- Oracle Linux Security Advisory ELSA-2026-38499 vom 2026-07-21 linux.oracle.com
- Oracle Linux Security Advisory ELSA-2026-19146 vom 2026-07-22 linux.oracle.com
CVE: CVE-2026-34588
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.