Local Privilege Escalation via Command Injection in Brocade Fabric OS Diagnostic Utility
39144
06 October 2026
06 October 2026
CLOSED
HIGH
7.0 - CVSS:4.0/AV:L/AC:L/AT:N/PR:H/UI:P/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N
CVE-2026-87673
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Brocade Security Advisory ID |
BSA-2026-3962 |
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Component |
Fabric OS CLI |
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CWE |
CWE-78: Improper Neutralization of Special Elements used in an OS Command ('OS Command Injection') |
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Summary:
An OS command injection vulnerability exists in maintenance command-line diagnostic utilities on Brocade Fabric OS versions before 9.2.2d and 10.0.0 through 10.0.0a1. The binary fails to sanitize user-supplied input options when invoking underlying system commands through a shell interpreter. A privileged user with maintenance account access can exploit this issue by supplying crafted parameters, which results in arbitrary OS command execution with root privileges.
Products Affected
- Brocade Fabric OS versions before 9.2.2d and 10.0.0 through 10.0.0a1
Products Not Affected
- Brocade SANnav is not affected by this vulnerability
[VEX Justification: Component_not_present] - Brocade ASCG is not affected by this vulnerability
[VEX Justification: Component_not_present]
Solution
- A security update is provided in Brocade Fabric OS 9.2.2d and 10.0.1
Note: This is a Frontier AI discovered vulnerability.
Revision History
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Version |
Change |
Date |
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1.0 |
Initial Publication |
October 6, 2026 |
Disclaimer
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