Samba: Mehrere Schwachstellen
WID-SEC-2026-2549 · first 28.07.2026 · updated 21.10.2026 · CVSS 9,8
What it is about
Samba ist eine Open Source Software Suite, die Druck- und Dateidienste für SMB/CIFS Clients implementiert. Ein Angreifer kann mehrere Schwachstellen in Samba ausnutzen, um vertrauliche Informationen offenzulegen, Sicherheitsmaßnahmen zu umgehen, einen Denial-of-Service-Zustand herbeizuführen oder Daten zu manipulieren.
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
- vertrauliche Informationen offenzulegen
- Sicherheitsmaßnahmen zu umgehen
- einen Denial-of-Service-Zustand herbeizuführen oder Daten zu manipulieren
Am I affected?
Affected according to the BSI:
- Debian Linux
- Amazon Linux 2
- Red Hat Enterprise Linux
- Fedora Linux
- IBM Storage Scale
- SUSE Linux
- Ubuntu Linux
- Open Source Samba <4.22.11
- Open Source Samba <4.23.10
- Open Source Samba <4.24.5
The installed version is usually shown under “Help → About” or in the device’s admin interface.
What helps?
Update to at least:
- Open Source Samba 4.22.11
- Open Source Samba 4.23.10
- Open Source Samba 4.24.5
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)
- Samba Release Notes vom 2026-07-27 www.samba.org
- Samba Release Notes vom 2026-07-27 www.samba.org
- Samba Release Notes vom 2026-07-27 www.samba.org
- SUSE Security Update SUSE-SU-2026:3364-1 vom 2026-07-28 lists.suse.com
- Debian Security Advisory DSA-6401 vom 2026-07-28 security-tracker.debian.org
- SUSE Security Update SUSE-SU-2026:3363-1 vom 2026-07-28 lists.suse.com
- Ubuntu Security Notice USN-8621-1 vom 2026-07-28 ubuntu.com
- SUSE Security Update SUSE-SU-2026:3366-1 vom 2026-07-28 lists.suse.com
- SUSE Security Update SUSE-SU-2026:3362-1 vom 2026-07-28 lists.suse.com
- SUSE Security Update SUSE-SU-2026:3365-1 vom 2026-07-28 lists.suse.com
- SUSE Security Update SUSE-SU-2026:3367-1 vom 2026-07-28 lists.suse.com
- SUSE Security Update SUSE-SU-2026:22977-1 vom 2026-08-03 lists.suse.com
- Fedora Security Advisory FEDORA-2026-FCD4630C0D vom 2026-08-04 bodhi.fedoraproject.org
- Fedora Security Advisory FEDORA-2026-3BE8175017 vom 2026-08-04 bodhi.fedoraproject.org
- Fedora Security Advisory FEDORA-2026-8E7FA96CF3 vom 2026-08-04 bodhi.fedoraproject.org
- SUSE Security Update SUSE-SU-2026:23003-1 vom 2026-08-12 lists.suse.com
- SUSE Security Update SUSE-SU-2026:23152-1 vom 2026-08-14 lists.suse.com
- SUSE Security Update SUSE-SU-2026:23129-1 vom 2026-08-14 lists.suse.com
- Amazon Linux Security Advisory ALAS2-2026-3886 vom 2026-09-01 alas.aws.amazon.com
- IBM Security Bulletin 7291687 vom 2026-10-08 www.ibm.com
- IBM Security Bulletin 7292164 vom 2026-10-13 www.ibm.com
- Red Hat Security Advisory RHSA-2026:86618 vom 2026-10-21 access.redhat.com
CVE: CVE-2026-58216, CVE-2026-58218, CVE-2026-58221, CVE-2026-58222, CVE-2026-58224, CVE-2026-6949
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.