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

Summaryinfo

A vulnerability was found in Brocade Fabric OS up to 9.2.2c/10.0.0a1. It has been classified as very critical. This impacts an unknown function of the component Account Management Subsystem. The manipulation leads to os command injection. This vulnerability is traded as CVE-2026-87677. It is possible to initiate the attack remotely. There is no exploit available. Upgrading the affected component is recommended.

Detailsinfo

A vulnerability was found in Brocade Fabric OS up to 9.2.2c/10.0.0a1. It has been rated as very critical. This issue affects an unknown code block of the component Account Management Subsystem. The manipulation with an unknown input leads to a os command injection vulnerability. Using CWE to declare the problem leads to 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. Impacted is confidentiality, integrity, and availability. The summary by CVE is:

An OS command injection vulnerability exists in the account management subsystem of Brocade Fabric OS versions before 9.2.2d and 10.0.0 through 10.0.0a1. When an administrator initiates an account deletion, the system invokes an internal maintenance routine to clean up cryptographic keys associated with the target account. Malformed account names previously accepted by Fabric OS can cause the execution of embedded shell metacharacters, triggering command injection.

It is possible to read the advisory at support.broadcom.com. The identification of this vulnerability is CVE-2026-87677 since 09/09/2026. The exploitation is known to be easy. The attack may be initiated remotely. Additional levels of successful authentication are needed 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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