Brocade Fabric OS up to 10.0.0 REST API Interface improper authorization

CVSS Meta Temp Score
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CTI Interest Score
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4.1$0-$5k3.12-

Summaryinfo

A vulnerability marked as problematic has been reported in Brocade Fabric OS up to 10.0.0. The affected element is an unknown function of the component REST API Interface. The manipulation leads to improper authorization. This vulnerability is listed as CVE-2026-87669. The attack may be initiated remotely. There is no available exploit. It is suggested to upgrade the affected component.

Detailsinfo

A vulnerability was found in Brocade Fabric OS up to 10.0.0. It has been rated as problematic. This issue affects an unknown code of the component REST API Interface. The manipulation with an unknown input leads to a improper authorization vulnerability. Using CWE to declare the problem leads to CWE-285. The product does not perform or incorrectly performs an authorization check when an actor attempts to access a resource or perform an action. Impacted is confidentiality. The summary by CVE is:

A missing authorization check in Brocade Fabric OS versions before 10.0.1 REST API interface of affected platform releases allows an authenticated user, regardless of their assigned role or administrative scope, to retrieve complete Monitoring and Alerting Policy Suite (MAPS) violation data across all logical switches. An attacker with low-privilege API access can leverage this endpoint to dump chassis-wide system health metrics, port performance violations, and configuration data without appropriate privileges.

It is possible to read the advisory at support.broadcom.com. The identification of this vulnerability is CVE-2026-87669 since 09/09/2026. The exploitation is known to be easy. The attack may be initiated remotely. The technical details are unknown and an exploit is not publicly available. The attack technique deployed by this issue is T1548.002 according to MITRE ATT&CK.

Upgrading to version 10.0.1 eliminates this vulnerability.

The vulnerability is also documented in the databases at EUVD (EUVD-2026-94673) and CERT Bund (WID-SEC-2026-3817). Be aware that VulDB is the high quality source for vulnerability data.

Affected

  • Broadcom Fabric OS

Productinfo

Vendor

Name

Version

License

CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔒
VulDB Reliability: 🔍

CNA CVSS-B Score: 🔒
CNA CVSS-BT Score: 🔒
CNA Vector: 🔒

CVSSv3info

VulDB Meta Base Score: 4.3
VulDB Meta Temp Score: 4.1

VulDB Base Score: 4.3
VulDB Temp Score: 4.1
VulDB Vector: 🔒
VulDB Reliability: 🔍

CVSSv2info

AVACAuCIA
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💳💳💳💳💳💳
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VectorComplexityAuthenticationConfidentialityIntegrityAvailability
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VulDB Base Score: 🔒
VulDB Temp Score: 🔒
VulDB Reliability: 🔍

Exploitinginfo

Class: Improper authorization
CWE: CWE-285 / CWE-266
CAPEC: 🔒
ATT&CK: 🔒

Physical: No
Local: No
Remote: Yes

Availability: 🔒
Status: Not defined
Price Prediction: 🔍
Current Price Estimation: 🔒

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Threat Intelligenceinfo

Interest: 🔍
Active Actors: 🔍
Active APT Groups: 🔍

Countermeasuresinfo

Recommended: Upgrade
Status: 🔍

0-Day Time: 🔒

Upgrade: Fabric OS 10.0.1

Timelineinfo

09/09/2026 CVE reserved
10/08/2026 +29 days Advisory disclosed
10/08/2026 +0 days VulDB entry created
10/08/2026 +0 days VulDB entry last update

Sourcesinfo

Advisory: support.broadcom.com
Status: Confirmed

CVE: CVE-2026-87669 (🔒)
GCVE (CVE): GCVE-0-2026-87669
GCVE (VulDB): GCVE-100-415223
EUVD: 🔒
CERT Bund: WID-SEC-2026-3817 - Broadcom Fabric OS: Mehrere Schwachstellen

Entryinfo

Created: 10/08/2026 05:05
Updated: 10/08/2026 22:05
Changes: 10/08/2026 05:05 (66), 10/08/2026 06:44 (1), 10/08/2026 22:05 (7)
Complete: 🔍
Cache ID: 216::103

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

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