Brocade Fabric OS up to 9.2.2c/10.0.0a1 Configuration Management Subsystem os command injection

Summaryinfo

A vulnerability has been found in Brocade Fabric OS up to 9.2.2c/10.0.0a1 and classified as very critical. This issue affects some unknown processing of the component Configuration Management Subsystem. This manipulation causes os command injection. This vulnerability appears as CVE-2026-87675. The attack may be initiated remotely. There is no available exploit. The affected component should be upgraded.

Detailsinfo

A vulnerability classified as very critical was found in Brocade Fabric OS up to 9.2.2c/10.0.0a1. Affected by this vulnerability is an unknown part of the component Configuration Management Subsystem. The manipulation with an unknown input leads to a os command injection vulnerability. The CWE definition for the vulnerability is 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. As an impact it is known to affect confidentiality, integrity, and availability. The summary by CVE is:

An OS command injection vulnerability exists in the configuration management subsystem of Brocade Fabric OS versions before 9.2.2d and 10.0.0 through 10.0.0a1. When performing a configuration download operation, the management daemon will relay configuration parameters, user-supplied relay host strings, and filenames directly to an internal utility script without sufficient character set validation. Because the local utility fails to sanitize shell metacharacters before processing them in a system shell command, a malicious or compromised configuration file can cause arbitrary operating system commands to be executed on a remote local switch when an administrator initiates a configuration download.

It is possible to read the advisory at support.broadcom.com. This vulnerability is known as CVE-2026-87675 since 09/09/2026. The exploitation appears to be easy. The attack can be launched remotely. Additional levels of successful authentication are necessary for exploitation. It demands that the victim is doing some kind of user interaction. The technical details are unknown and an exploit is not publicly available. The pricing for an exploit might be around USD $0-$5k at the moment (estimation calculated on 10/08/2026). The attack technique deployed by this issue is T1202 according to MITRE ATT&CK.

Upgrading to version 9.2.2d eliminates this vulnerability.

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Productinfo

Vendor

• Brocade

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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