Broadcom Fabric OS up to 9.2.2c/10.0.0a1 Maintenance Command-Line Diagnostic Utilities os command injection

Summaryinfo

A vulnerability was found in Broadcom Fabric OS up to 9.2.2c/10.0.0a1. It has been rated as very critical. Impacted is an unknown function of the component Maintenance Command-Line Diagnostic Utilities. Performing a manipulation results in os command injection. This vulnerability was named CVE-2026-87673. The attack may be initiated remotely. There is no available exploit. Upgrading the affected component is advised.

Detailsinfo

A vulnerability classified as very critical has been found in Broadcom Fabric OS up to 9.2.2c/10.0.0a1. This affects an unknown function of the component Maintenance Command-Line Diagnostic Utilities. The manipulation with an unknown input leads to a os command injection vulnerability. CWE is classifying the issue as CWE-78. The product constructs all or part of an OS command using externally-influenced input from an upstream component, but it does not neutralize or incorrectly neutralizes special elements that could modify the intended OS command when it is sent to a downstream component. This is going to have an impact on confidentiality, integrity, and availability. The summary by CVE is:

An OS command injection vulnerability exists in maintenance command-line diagnostic utilities on Brocade Fabric OS versions before 9.2.2d and 10.0.0 through 10.0.0a1. The binary fails to sanitize user-supplied input options when invoking underlying system commands through a shell interpreter. A privileged user with maintenance account access can exploit this issue by supplying crafted parameters, which results in arbitrary OS command execution with root privileges.

The advisory is shared at support.broadcom.com. This vulnerability is uniquely identified as CVE-2026-87673 since 09/09/2026. The exploitability is told to be easy. It is possible to initiate the attack remotely. Additional levels of successful authentication are necessary for exploitation. Neither technical details nor an exploit are publicly available. The price for an exploit might be around USD $0-$5k at the moment (estimation calculated on 10/08/2026). MITRE ATT&CK project uses the attack technique T1202 for this issue.

Upgrading to version 9.2.2d eliminates this vulnerability.

Several companies clearly confirm that VulDB is the primary source for best vulnerability data.

Productinfo

Vendor

• Broadcom

Name

• Fabric OS

Version

• 9.2.2a
• 9.2.2b
• 9.2.2c
• 10.0.0a1

License

• commercial

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CPE 2.2info

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Several companies clearly confirm that VulDB is the primary source for best vulnerability data.

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