---
title: "CVE-2026-87660: Brocade Fabric OS - Broken Access Control"
description: "Brocade Fabric OS < 9.2.2d and 10.0.0 through 10.0.0a1 contain an improper file permission and missing authorization vulnerability in the diagnostic kernel module subsystem, letting unprivileged local users disrupt storage fabric operations and invoke privileged hardware tests, exploit requires local unprivileged user access."
url: https://panop.io/threat-heartbeat/CVE-2026-87660/
---

# CVE-2026-87660 Brocade Fabric OS - Broken Access Control

Brocade Fabric OS < 9.2.2d and 10.0.0 through 10.0.0a1 contain an improper file permission and missing authorization vulnerability in the diagnostic kernel module subsystem, letting unprivileged local users disrupt storage fabric operations and invoke privileged hardware tests, exploit requires local unprivileged user access.

CVSS base score 7.1 /10

High

CISA KEV

Not listed

Public exploit

None known

Authentication

Required

EPSS

0.13% chance of exploitation in 30 days

[View the NVD record ↗](https://nvd.nist.gov/vuln/detail/CVE-2026-87660)

## Details

Type

Broken Access Control

Impact

Denial Of Service, Privilege Escalation

CVSS vector

CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:H/A:H

Published

8 October 2026

Updated

15 October 2026

Weakness

[CWE-732](https://cwe.mitre.org/data/definitions/732.html)

## Vendor fix

Update to version 9.2.2d or later, or 10.0.0a2 or later.

Patching closes this CVE. It does not tell you which of your systems run the affected version, or what else is exposed alongside them.

## References

- [https://nvd.nist.gov/vuln/detail/CVE-2026-87660](https://nvd.nist.gov/vuln/detail/CVE-2026-87660)
- [https://support.broadcom.com/external/content/SecurityAdvisories/0/39155](https://support.broadcom.com/external/content/SecurityAdvisories/0/39155)

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## What this record can't tell you

- Whether you run the affected software, and where
- Whether an attacker can actually reach and exploit it
- The misconfigurations that never get a CVE number
- What it would cost the business, ranked into what to fix first

Panop answers these inside your environment, for this CVE and every other finding.

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