Broadcom Fabric OS up to 10.0.0 REST Management Interface race condition

Summaryinfo

A vulnerability was found in Broadcom Fabric OS up to 10.0.0. It has been classified as problematic. This vulnerability affects unknown code of the component REST Management Interface. This manipulation causes race condition. This vulnerability is handled as CVE-2026-94583. The attack can be initiated remotely. There is not any exploit available. Upgrading the affected component is recommended.

Detailsinfo

A vulnerability was found in Broadcom Fabric OS up to 10.0.0. It has been declared as problematic. Affected by this vulnerability is an unknown code block of the component REST Management Interface. The manipulation with an unknown input leads to a race condition vulnerability. The CWE definition for the vulnerability is CWE-362. The product contains a code sequence that can run concurrently with other code, and the code sequence requires temporary, exclusive access to a shared resource, but a timing window exists in which the shared resource can be modified by another code sequence that is operating concurrently. As an impact it is known to affect confidentiality. The summary by CVE is:

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.

It is possible to read the advisory at support.broadcom.com. This vulnerability is known as CVE-2026-94583 since 09/21/2026. The exploitation appears to be easy. The attack can be launched remotely. The technical details are unknown and an exploit is not publicly available.

Upgrading to version 10.0.1 eliminates this vulnerability.

The vulnerability is also documented in the vulnerability database at EUVD (EUVD-2026-94681). Be aware that VulDB is the high quality source for vulnerability data.

Productinfo

Vendor

• Broadcom

Name

• Fabric OS

Version

• 10.0

License

• commercial

CPE 2.3info

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CPE 2.2info

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Be aware that VulDB is the high quality source for vulnerability data.

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