Vulnerability in Brocade Fabric OS

[ Description ]Official description

A stack-based buffer overflow vulnerability exists in the diagnostic execution utility of Brocade Fabric OS versions before 10.0.1. When processing command arguments for diagnostic operations, the utility tokenizes user-supplied input into an internal argument array without enforcing boundary checks on the maximum array capacity. An authenticated user with administrative access can exploit this vulnerability by supplying a crafted diagnostic command string containing an excessive number of tokenized arguments. This leads to a memory overwrite resulting in a denial of service (process crash).

[ Fixes ]Fixes and patches

No fix or interim patch is linked from our sources yet. Check the vendor references below and limit exposure of affected systems until a fix is available.

[ Advisories ]Government CERT advisories

• NCSC-NL16 Oct 2026NCSC-2026-0432

  Vulnerabilities fixed in HPE Brocade Fabric OS Translated from Dutch

  Probability/damage M/HCVE-2026-87659CVE-2026-87660CVE-2026-87661+31 more CVEs
• BSI CERT-Bund7 Oct 2026WID-SEC-2026-3817

  Broadcom Fabric OS: Multiple vulnerabilities Translated from German

  CVE-2026-94580CVE-2026-94575CVE-2026-87673+31 more CVEs

[ References ]References

• support.broadcom.com/external/content/SecurityAdvisories/0/39152Vendor Advisory