OS command injection in Brocade Fabric OS firmware upgrade requests
Key facts
- Attack vector
- Local
- Privileges required
- High
- User interaction
- Passive
- Attack complexity
- Low
- Attack requirements
- None
- Impact type
- Code execution
- Confidentiality · integrity · availability
- High · High · High
- Fix status
- Fixed
Attack profile from CVSS 4.0 · CNA. Fix status from CNA. Impact type from CWE-78.
Summary
Brocade Fabric OS versions before 9.2.2d and from 10.0.0 through 10.0.0a1 are affected. Parameters such as the host or file path from upgrade requests are passed to a system shell without sanitization, an OS command injection flaw (CWE-78). A local attacker with high privileges can execute arbitrary shell commands with the elevated privileges of the firmware management daemon.
Written with Claude Haiku 5.5 from the sources below · 2026-10-29
Description from the CNA
Brocade Fabric versions before 9.2.2d and 10.0.0 through 10.0.0a1 handling of specific download protocols utilizes unsanitized parameter strings. When processing upgrade requests, parameters are converted into system command strings and executed through a system shell interface. Because control characters and shell metacharacters in fields like the host or file path are not stripped or sanitized, an attacker can execute arbitrary shell commands with the firmware management daemon's elevated privileges.
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
Upgrade Brocade Fabric OS to version 9.2.2d.
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-2026-87662
- 2026-10-08 CISA SSVC decision points changed
- 2026-10-08 Priority changed: MEDIUM → LOW
- 2026-10-09 CISA SSVC decision points changed
- 2026-10-15 Alias added: GHSA-hrf2-53wv-vghq
- 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-2026-87662 · CVE Program
- CVE-2026-87662 · NVD
- FIRST EPSS
- GHSA-hrf2-53wv-vghq · GitHub Advisory Database · CC BY 4.0
This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences