OpenSSH: Mehrere Schwachstellen
WID-SEC-2026-3785 · first 07.10.2026 · updated 23.10.2026 · CVSS 6,5
What it is about
OpenSSH ist eine Open Source Implementierung des Secure Shell Protokolls. Ein entfernter, anonymer Angreifer kann mehrere Schwachstellen in OpenSSH ausnutzen, um Sicherheitsvorkehrungen zu umgehen, um einen Denial of Service herbeizufürhen oder seine Rechte auszuweiten.
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
- Sicherheitsvorkehrungen zu umgehen
- einen Denial of Service herbeizufürhen oder seine Rechte auszuweiten
Am I affected?
Affected according to the BSI:
- Red Hat Enterprise Linux
- Fedora Linux
- Ubuntu Linux
- Open Source OpenSSH <10.6p1
- Open Source OpenSSH <=10.6
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 10.6p1
- Open Source OpenSSH <=10.6
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 2026-10-06 www.openssh.org
- GitHub Advisory Database vom 2026-10-06 github.com
- GitHub Advisory Database vom 2026-10-06 github.com
- GitHub Advisory Database vom 2026-10-06 github.com
- GitHub Advisory Database vom 2026-10-06 github.com
- GitHub Advisory Database vom 2026-10-06 github.com
- GitHub Advisory Database vom 2026-10-06 github.com
- GitHub Advisory Database vom 2026-10-06 github.com
- GitHub Advisory Database vom 2026-10-06 github.com
- GitHub Advisory Database vom 2026-10-06 github.com
- GitHub Advisory Database vom 2026-10-06 github.com
- GitHub Advisory Database vom 2026-10-06 github.com
- Ubuntu Security Notice USN-8928-1 vom 2026-10-14 ubuntu.com
- Red Hat Security Advisory RHSA-2026:84849 vom 2026-10-19 access.redhat.com
- Fedora Security Advisory FEDORA-2026-A2ED02274A vom 2026-10-22 bodhi.fedoraproject.org
- Fedora Security Advisory FEDORA-2026-1A3AE49D07 vom 2026-10-22 bodhi.fedoraproject.org
CVE: CVE-2026-106552, CVE-2026-106553, CVE-2026-106555, CVE-2026-106582, CVE-2026-106583, CVE-2026-106584, CVE-2026-106585, CVE-2026-106586, CVE-2026-106587, CVE-2026-106588, CVE-2026-106589
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.