Cross-Virtual-Fabric Context Switching and Horizontal Privilege Escalation in Brocade Fabric OS
39081
06 October 2026
06 October 2026
CLOSED
HIGH
8.5 - CVSS:4.0/AV:A/AC:L/AT:N/PR:L/UI:N/VC:H/VI:H/VA:N/SC:N/SI:N/SA:N
CVE-2026-87687
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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-88: Improper Neutralization of Argument Delimiters or Special Sequences in Commands |
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Summary:
An authorization and input validation vulnerability exists in Brocade Fabric OS versions before 9.2.2d and 10.0.0 through 10.0.0a1. An authenticated user with restricted privileges in one Virtual Fabric can exploit this issue by submitting a specially crafted request containing an arbitrary fabric identifier. This allows the user to perform unauthorized cross-fabric operations and view configuration details within tenants/Virtual Fabrics to which they have not been granted access.
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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