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CVE-2026-87687

7.3, high

An authorization and input validation vulnerability exists in Brocade Fabric OS versions before 9.2.2d and 10.0.0 through 10.0.0a1

NVD (opens in a new tab) CVE.org (opens in a new tab)
CVSS
7.3, high high CVSS v3.1
EPSS, next 30 days
0.2% higher than 10.3% of scored CVEs
Exploitation
No public evidence
Published
8 Oct 202610 days ago

Description

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.

Details

Vendor
Brocade
Product
Fabric OS
Weakness
CWE-88 (opens in a new tab)
Status
Analyzed
Updated
14 Oct 2026
Assigner
sirt@brocade.com

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

References 1

Advisories 1

The kind is read from NVD's tags where present and from the shape of the URL otherwise, so treat it as a hint.

Other Brocade CVEs

Every Brocade CVE we hold

Same vendor in what we hold, not a known link between the flaws.

  • CVE-2026-87659 Brocade Fabric OS Missing Authentication for Critical Function Vulnerability EPSS 0.2% 9.8, critical
  • CVE-2026-87679 Brocade Fabric OS Heap-based Buffer Overflow Vulnerability EPSS 0.4% 7.2, high
  • CVE-2026-87680 Brocade Fabric OS OS Command Injection Vulnerability EPSS 2% 8.8, high
  • CVE-2026-87682 Brocade Fabric OS OS Command Injection Vulnerability EPSS 2% 8.8, high
  • CVE-2026-87683 Brocade Fabric OS Stack-based Buffer Overflow Vulnerability EPSS 0.5% 8.8, high
  • CVE-2026-87665 Brocade Fabric OS Stack-based Buffer Overflow Vulnerability EPSS 0.8% 7.5, high
  • CVE-2026-87671 Brocade Fabric OS Out-of-Bounds Read Vulnerability EPSS 0.4% 7.5, high
  • CVE-2026-87684 Brocade Fabric OS Stack-based Buffer Overflow Vulnerability EPSS 0.6% 9.8, critical

Beyond this page

Is CVE-2026-87687 in your network?

This page tells you how dangerous CVE-2026-87687 is out there. Whether it sits on one of your devices, only a scan of your own network can tell. That is what our systems do, every day, for the companies we protect.

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  • EXYS7950 KONDRA

    Detect it if it's exploited

    Until the patch is applied, Kondra monitors your network, events and endpoints in real time. It keeps an inventory of the software installed on every endpoint, and its anomaly detection rules flag what an attacker does once inside.

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Check your exposure

Assembled from the NVD 2.0 API, the CISA Known Exploited Vulnerabilities Catalog and FIRST EPSS. Scores are as of our last collection on 18 Oct 2026, not the live upstream state.