OpenSSH: Mehrere Schwachstellen
WID-SEC-2026-2747 · first 11.08.2026 · updated 23.10.2026 · CVSS 8,1
What it is about
OpenSSH ist eine Open Source Implementierung des Secure Shell Protokolls. Ein Angreifer kann mehrere Schwachstellen in OpenSSH ausnutzen, um Sicherheitsvorkehrungen zu umgehen, einen Denial of Service und potentiell Codeausführung zu erreichen.
Under what conditions?
The BSI does not name any particular preconditions. Exploitable remotely according to the BSI.
What can happen in the worst case
An attacker could use the vulnerability to
- Sicherheitsvorkehrungen zu umgehen
- einen Denial of Service
- potentiell Codeausführung zu erreichen
Am I affected?
Affected according to the BSI:
- IBM AIX 7.3
- IBM VIOS 4.1
- IBM AIX 7.2
- Red Hat Enterprise Linux
- RESF Rocky Linux
- SUSE Linux
- Ubuntu Linux
- Oracle Linux
- Open Source OpenSSH <10.5
The installed version is usually shown under “Help → About” or in the device’s admin interface.
What helps?
Update to at least:
- Open Source OpenSSH 10.5
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)
- OpenSSH Release Notes vom 2026-08-10 www.openssh.org
- Ubuntu Security Notice USN-8721-1 vom 2026-09-03 ubuntu.com
- IBM Security Bulletin 7287147 vom 2026-09-11 www.ibm.com
- Red Hat Security Advisory RHSA-2026:69130 vom 2026-09-21 access.redhat.com
- Red Hat Security Advisory RHSA-2026:69266 vom 2026-09-21 access.redhat.com
- Rocky Linux Security Advisory RLSA-2026:69266 vom 2026-09-22 errata.build.resf.org
- Rocky Linux Security Advisory RLSA-2026:69129 vom 2026-09-22 errata.build.resf.org
- Oracle Linux Security Advisory ELSA-2026-69130 vom 2026-09-22 linux.oracle.com
- Rocky Linux Security Advisory RLSA-2026:69130 vom 2026-09-22 errata.build.resf.org
- Ubuntu Security Notice USN-8804-1 vom 2026-09-22 ubuntu.com
- Red Hat Security Advisory RHSA-2026:70719 vom 2026-09-23 access.redhat.com
- Oracle Linux Security Advisory ELSA-2026-69266 vom 2026-09-23 linux.oracle.com
- Oracle Linux Security Advisory ELSA-2026-69129 vom 2026-09-30 linux.oracle.com
- Red Hat Security Advisory RHSA-2026:76748 vom 2026-10-06 access.redhat.com
- SUSE Security Update SUSE-SU-2026:4614-1 vom 2026-10-12 lists.suse.com
- SUSE Security Update SUSE-SU-2026:24140-1 vom 2026-10-13 lists.suse.com
- SUSE Security Update SUSE-SU-2026:4686-1 vom 2026-10-15 lists.suse.com
- SUSE Security Update SUSE-SU-2026:4827-1 vom 2026-10-21 lists.suse.com
- SUSE Security Update SUSE-SU-2026:4811-1 vom 2026-10-21 lists.suse.com
- Rocky Linux Security Advisory RLSA-2026:88211 vom 2026-10-23 errata.build.resf.org
- Oracle Linux Security Advisory ELSA-2026-88211 vom 2026-10-23 linux.oracle.com
CVE: CVE-2026-73281, CVE-2026-73282, CVE-2026-73283
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.