Authorization and Input Validation Vulnerability in Brocade Fabric OS
CVE-2026-87687

8.5HIGH

Key Information:

Vendor

Brocade
Status
Fabric Os
Vendor
CVE Published:
8 October 2026

What is CVE-2026-87687?

An authorization and input validation flaw exists in Brocade Fabric OS, enabling an authenticated user with limited privileges in one Virtual Fabric to manipulate operations across multiple fabrics. By sending a carefully crafted request featuring an arbitrary fabric identifier, the user may access configuration information and perform unauthorized actions within Virtual Fabrics that they are not permitted to access.

Affected Version(s)

Fabric OS 0 < 9.2.2d

Fabric OS 10.0.0 <= 10.0.0a1

References

https://support.broadcom.com/external/content/SecurityAdv...

CVSS V4

Score:
8.5
Severity:
HIGH
Confidentiality:
High
Integrity:
High
Availability:
None
Attack Vector:
Adjacent Network
Attack Complexity:
Low
Attack Required:
None
Privileges Required:
Undefined
User Interaction:
None

Timeline

  • Vulnerability published

  • Vulnerability Reserved

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