A race condition vulnerability exists in the request processing logic of the REST management interface on Brocade Fabric OS versions before 10.0.1 (CVE-2026-94583)
39159
06 October 2026
06 October 2026
CLOSED
MEDIUM
2.1 Low - CVSS:4.0/AV:A/AC:H/AT:N/PR:L/UI:N/VC:L/VI:N/VA:N/SC:N/SI:N/SA:N
CVE-2026-94583
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Brocade Security Advisory ID |
BSA-2026-3961 |
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Component |
Fabric OS REST API |
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CWE |
CWE-362: Concurrent Execution using Shared Resource with Improper Synchronization ('Race Condition') |
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Summary:
A race condition vulnerability exists in the request processing logic of the REST management interface on Brocade Fabric OS versions before 10.0.1. When handling concurrent incoming network management FCIP requests, a timing window exists between when a request populates the address variable and when the service constructs and returns the response context. As a result, the first request adopts the modified context, causing the service to return sensitive management details or configuration data belonging to the second context back to the original requester.
Products Affected
- Brocade Fabric OS versions before 10.0.1
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 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 |
10/06/2026 |
Disclaimer
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