Broadcom Fabric OS: Mehrere Schwachstellen
WID-SEC-2026-3817 · first 08.10.2026 · updated 08.10.2026 · CVSS 8,0
What it is about
Fabric OS (FOS) ist ein Betriebssystem für FibreChannel Switches. Ein Angreifer kann mehrere Schwachstellen in Broadcom Fabric OS ausnutzen, um seine Privilegien zu erhöhen, um einen Denial of Service Angriff durchzuführen, um Informationen offenzulegen, um Dateien zu manipulieren, um Sicherheitsvorkehrungen zu umgehen und um beliebigen Programmcode auszuführen.
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
- seine Privilegien zu erhöhen
- einen Denial of Service Angriff durchzuführen
- Informationen offenzulegen
- Dateien zu manipulieren
- Sicherheitsvorkehrungen zu umgehen
- beliebigen Programmcode auszuführen
Am I affected?
Affected according to the BSI:
- Broadcom Fabric OS <10.0.1
The installed version is usually shown under “Help → About” or in the device’s admin interface.
What helps?
Update to at least:
- Broadcom Fabric OS 10.0.1
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)
- Brocade Security Advisory vom 2026-10-07 support.broadcom.com
- Brocade Security Advisory vom 2026-10-07 support.broadcom.com
- Brocade Security Advisory vom 2026-10-07 support.broadcom.com
- Brocade Security Advisory vom 2026-10-07 support.broadcom.com
- Brocade Security Advisory vom 2026-10-07 support.broadcom.com
- Brocade Security Advisory vom 2026-10-07 support.broadcom.com
- Brocade Security Advisory vom 2026-10-07 support.broadcom.com
- Brocade Security Advisory vom 2026-10-07 support.broadcom.com
- Brocade Security Advisory vom 2026-10-07 support.broadcom.com
- Brocade Security Advisory vom 2026-10-07 support.broadcom.com
- Brocade Security Advisory vom 2026-10-07 support.broadcom.com
- Brocade Security Advisory vom 2026-10-07 support.broadcom.com
- Brocade Security Advisory vom 2026-10-07 support.broadcom.com
- Brocade Security Advisory vom 2026-10-07 support.broadcom.com
- Brocade Security Advisory vom 2026-10-07 support.broadcom.com
- Brocade Security Advisory vom 2026-10-07 support.broadcom.com
- Brocade Security Advisory vom 2026-10-07 support.broadcom.com
- Brocade Security Advisory vom 2026-10-07 support.broadcom.com
- Brocade Security Advisory vom 2026-10-07 support.broadcom.com
- Brocade Security Advisory vom 2026-10-07 support.broadcom.com
- Brocade Security Advisory vom 2026-10-07 support.broadcom.com
- Brocade Security Advisory vom 2026-10-07 support.broadcom.com
- Brocade Security Advisory vom 2026-10-07 support.broadcom.com
- Brocade Security Advisory vom 2026-10-07 support.broadcom.com
- Brocade Security Advisory vom 2026-10-07 support.broadcom.com
and 9 more sources in the original advisory
CVE: CVE-2026-87659, CVE-2026-87660, CVE-2026-87661, CVE-2026-87663, CVE-2026-87664, CVE-2026-87665, CVE-2026-87666, CVE-2026-87667, CVE-2026-87668, CVE-2026-87669, CVE-2026-87670, CVE-2026-87671, CVE-2026-87672, CVE-2026-87673, CVE-2026-87674, CVE-2026-87675, CVE-2026-87676, CVE-2026-87677, CVE-2026-87678, CVE-2026-87679 …
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.