Improper permissions in Brocade Fabric OS diagnostic kernel module
Key facts
- Attack vector
- Adjacent network
- Privileges required
- Low
- User interaction
- None
- Attack complexity
- Low
- Attack requirements
- None
- Impact type
- —
- Confidentiality · integrity · availability
- None · High · High
- Fix status
- Fixed
Attack profile from CVSS 4.0 · CNA. Fix status from CNA.
Summary
Brocade Fabric OS versions before 9.2.2d and versions 10.0.0 through 10.0.0a1 are affected. An improper file permission and missing authorization flaw in the diagnostic kernel module subsystem is tracked as CWE-732. A local user with low privileges can invoke privileged hardware tests, force system error conditions, reset hardware blades, or disrupt storage fabric operations.
Written with Claude Haiku 5.5 from the sources below · 2026-10-29
Description from the CNA
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.
Why it matters now
SSVC decision points
CISA ADP · SSVC 2.0.3
- Exploitation
- None
- Automatable
- No
- Technical impact
- Total
The decision (Track, Attend, Act) also depends on your mission and well-being impact; see CISA's SSVC guide.
Affected products
Remediation
Fabric OS is fixed in 9.2.2d. The sources list no fixed version for Fabric OS 10.0.0 through 10.0.0a1.
Written with Claude Haiku 5.5 from the sources below · 2026-10-29
- Fix · CNA Fabric OS (Brocade) Fixed in 9.2.2d
Fixed in the same release
Records fixed by the same vendor advisory or release, as the CNA lists them.
- Release ·
Brocade Fabric OS 9.2.2d
21 records Highest priority Priority MEDIUM 3 MEDIUM, 18 LOW
Other records, highest priority first
- TI-2026-69357 OS command injection in Brocade Fabric OS time zone managementPriority MEDIUM 44
- TI-2026-69483 Command injection in Brocade Fabric OS WebTools interfacePriority MEDIUM 42
- TI-2026-69481 OS command injection in Brocade Fabric OS REST API interfacePriority MEDIUM 42
Timeline
- 2026-10-08 Threatist record created from CVE-2026-87660
- 2026-10-08 Alias added: GHSA-jf7h-33c6-ggh7
- 2026-10-08 CISA SSVC decision points changed
- 2026-10-08 Priority changed: MEDIUM → LOW
- 2026-10-15 CVSS score added · NVD
References
More Brocade vulnerabilities
- TI-2025-01721 Code injection exposure in Fabric OS 9.1.0 through 9.1.1d6 KEVCVSS 4.0HIGH 8.6
- TI-2016-06760 Path traversal in Brocade Network Advisor versions released prior to and including 14.0.2 CVSS 3.0CRITICAL 9.8
- TI-2024-19729 hard-coded credentials in the documentation that appear as the appliance root password CVSS 3.1CRITICAL 9.8
- TI-2016-06762 Path traversal in Brocade Network Advisor versions released prior to and including 14.0.2 CVSS 3.0HIGH 7.5
- TI-2018-04739 OS command injection in Brocade Network Advisor CVSS 3.0CRITICAL 9.8
- TI-2016-06761 Path traversal in Brocade Network Advisor versions released prior to and including 14.0.2 CVSS 3.0HIGH 7.5
Sources
- CVE-2026-87660 · CVE Program
- CVE-2026-87660 · NVD
- FIRST EPSS
- GHSA-jf7h-33c6-ggh7 · GitHub Advisory Database · CC BY 4.0
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