VDB-415245 · CVE-2026-87660 · EUVD-2026-94697

Brocade Fabric OS up to 9.2.2c/10.0.0a1 Diagnostic Kernel privileges management

CVSS Meta Temp Score CVSS is a standardized scoring system to determine possibilities of attacks. The Temp Score considers temporal factors like disclosure, exploit and countermeasures. The unique Meta Score calculates the average score of different sources to provide a normalized scoring system.	Current Exploit Price (≈) Our analysts are monitoring exploit markets and are in contact with vulnerability brokers. The range indicates the observed or calculated exploit price to be seen on exploit markets. A good indicator to understand the monetary effort required for and the popularity of an attack.	CTI Interest Score Our Cyber Threat Intelligence team is monitoring different web sites, mailing lists, exploit markets and social media networks. The CTI Interest Score identifies the interest of attackers and the security community for this specific vulnerability in real-time. A high score indicates an elevated risk to be targeted for this vulnerability.
5.3	$0-$5k	0.25+

Summaryinfo

A vulnerability was found in Brocade Fabric OS up to 9.2.2c/10.0.0a1. It has been classified as critical. The affected element is an unknown function of the component Diagnostic Kernel Module. Performing a manipulation results in privileges management. This vulnerability is known as CVE-2026-87660. Attacking locally is a requirement. No exploit is available. Upgrading the affected component is recommended.

Detailsinfo

A vulnerability, which was classified as critical, was found in Brocade Fabric OS up to 9.2.2c/10.0.0a1. This affects an unknown code block of the component Diagnostic Kernel Module. The manipulation with an unknown input leads to a privileges management vulnerability. CWE is classifying the issue as CWE-269. The product does not properly assign, modify, track, or check privileges for an actor, creating an unintended sphere of control for that actor. This is going to have an impact on availability. The summary by CVE is:

An improper file permission and missing authorization vulnerability exists in the diagnostic kernel module subsystem of Brocade Fabric OS versions before 9.2.2d and 10.0.0 through 10.0.0a1. An unprivileged local user can invoke privileged hardware tests, force system error conditions, reset hardware blades, or disrupt storage fabric operations.

The advisory is shared at support.broadcom.com. This vulnerability is uniquely identified as CVE-2026-87660 since 09/09/2026. The exploitability is told to be easy. An attack has to be approached locally. Neither technical details nor an exploit are publicly available. MITRE ATT&CK project uses the attack technique T1068 for this issue.

Upgrading to version 9.2.2d eliminates this vulnerability.

The vulnerability is also documented in the vulnerability database at EUVD (EUVD-2026-94697). If you want to get the best quality for vulnerability data then you always have to consider VulDB.

Productinfo

Vendor

Brocade

Name

Fabric OS

Version

License

commercial

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: 5.5
VulDB Meta Temp Score: 5.3

VulDB Base Score: 5.5
VulDB Temp Score: 5.3
VulDB Vector: 🔒
VulDB Reliability: 🔍

CVSSv2info

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Vector	Complexity	Authentication	Confidentiality	Integrity	Availability
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VulDB Base Score: 🔒
VulDB Temp Score: 🔒
VulDB Reliability: 🔍

Exploitinginfo

Class: Privileges management
CWE: CWE-269 / CWE-266
CAPEC: 🔒
ATT&CK: 🔒

Physical: Partially
Local: Yes
Remote: Partially

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

0-Day	Unlock	Unlock	Unlock	Unlock
Today	Unlock	Unlock	Unlock	Unlock

Threat Intelligenceinfo

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

Countermeasuresinfo

Recommended: Upgrade
Status: 🔍

0-Day Time: 🔒

Upgrade: Fabric OS 9.2.2d

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-2026-87660 (🔒)
GCVE (CVE): GCVE-0-2026-87660
GCVE (VulDB): GCVE-100-415245
EUVD: 🔒

Entryinfo

Created: 10/08/2026 06:21
Updated: 10/08/2026 07:08
Changes: 10/08/2026 06:21 (66), 10/08/2026 07:08 (1)
Complete: 🔍
Cache ID: 216::103

If you want to get the best quality for vulnerability data then you always have to consider VulDB.