Red Hat Enterprise Linux (ruby: net-imap): Mehrere Schwachstellen
WID-SEC-2026-2163 · first 01.07.2026 · updated 21.10.2026 · CVSS 7,4
What it is about
Red Hat Enterprise Linux (RHEL) ist eine populäre Linux-Distribution. Ein entfernter, anonymer Angreifer kann mehrere Schwachstellen in Red Hat Enterprise Linux ausnutzen, um einen Denial of Service Angriff durchzuführen, Sicherheitsmaßnahmen zu umgehen, Daten zu manipulieren oder vertrauliche Informationen offenzulegen.
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
- einen Denial of Service Angriff durchzuführen
- Sicherheitsmaßnahmen zu umgehen
- Daten zu manipulieren oder vertrauliche Informationen offenzulegen
Am I affected?
Affected according to the BSI:
- Amazon Linux 2
- Red Hat Enterprise Linux
- Oracle Linux
- RESF Rocky Linux
- SUSE Linux
- SUSE openSUSE
- 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)
- Rocky Linux Security Advisory RLSA-2026:33565 vom 2026-07-05 errata.build.resf.org
- Red Hat Security Advisory RHSA-2026:35834 vom 2026-07-06 access.redhat.com
- Rocky Linux Security Advisory RLSA-2026:33540 vom 2026-07-05 errata.build.resf.org
- Red Hat Security Advisory RHSA-2026:35866 vom 2026-07-06 access.redhat.com
- Red Hat Security Advisory RHSA-2026:35867 vom 2026-07-06 access.redhat.com
- Red Hat Security Advisory RHSA-2026:33577 vom 2026-06-30 access.redhat.com
- Red Hat Security Advisory RHSA-2026:34076 vom 2026-07-01 access.redhat.com
- Oracle Linux Security Advisory ELSA-2026-33576 vom 2026-07-02 linux.oracle.com
- Oracle Linux Security Advisory ELSA-2026-33515 vom 2026-07-02 linux.oracle.com
- Oracle Linux Security Advisory ELSA-2026-33514 vom 2026-07-03 linux.oracle.com
- Red Hat Security Advisory RHSA-2026:35895 vom 2026-07-06 access.redhat.com
- Amazon Linux Security Advisory ALAS2-2026-3794 vom 2026-07-08 alas.aws.amazon.com
- Red Hat Security Advisory RHSA-2026:37238 vom 2026-07-09 access.redhat.com
- Red Hat Security Advisory RHSA-2026:37397 vom 2026-07-09 access.redhat.com
- Red Hat Security Advisory RHSA-2026:38694 vom 2026-07-13 access.redhat.com
- Oracle Linux Security Advisory ELSA-2026-37397 vom 2026-08-11 linux.oracle.com
- openSUSE Security Update OPENSUSE-SU-2026:21878-1 vom 2026-09-24 lists.opensuse.org
- Oracle Linux Security Advisory ELSA-2026-72484 vom 2026-09-29 linux.oracle.com
- Oracle Linux Security Advisory ELSA-2026-72485 vom 2026-09-29 linux.oracle.com
- Oracle Linux Security Advisory ELSA-2026-72285 vom 2026-09-30 linux.oracle.com
- Oracle Linux Security Advisory ELSA-2026-72286 vom 2026-09-30 linux.oracle.com
- openSUSE Security Update OPENSUSE-SU-2026:22068-1 vom 2026-10-18 lists.opensuse.org
- SUSE Security Update SUSE-SU-2026:24195-1 vom 2026-10-20 lists.suse.com
- SUSE Security Update SUSE-SU-2026:24250-1 vom 2026-10-20 lists.suse.com
CVE: CVE-2026-42245, CVE-2026-42246, CVE-2026-42258
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.