Brocade Fabric OS up to 9.2.2c/10.0.0a1 Logging Service privileges management

Summaryinfo

A vulnerability classified as very critical has been found in Brocade Fabric OS up to 9.2.2c/10.0.0a1. Affected by this vulnerability is an unknown functionality of the component Logging Service. Performing a manipulation results in privileges management. This vulnerability is cataloged as CVE-2026-87674. The attack must be initiated from a local position. There is no exploit available. It is recommended to upgrade the affected component.

Detailsinfo

A vulnerability was found in Brocade Fabric OS up to 9.2.2c/10.0.0a1. It has been classified as very critical. This affects some unknown processing of the component Logging Service. The manipulation with an unknown input leads to a privileges management vulnerability. CWE is classifying the issue as CWE-269. The product does not properly assign, modify, track, or check privileges for an actor, creating an unintended sphere of control for that actor. This is going to have an impact on confidentiality, integrity, and availability. The summary by CVE is:

A local privilege escalation vulnerability exists in the system logging daemon of Brocade Fabric OS versions before 9.2.2d and 10.0.0 through 10.0.0a1. Insufficient access controls on internal inter-process communication (IPC) channels allow an unprivileged local user to submit malformed logging configurations. Due to improper input sanitization during configuration file generation, an attacker can inject arbitrary directives that execute with elevated privileges when the logging service reloads, leading to local privilege escalation.

It is possible to read the advisory at support.broadcom.com. This vulnerability is uniquely identified as CVE-2026-87674 since 09/09/2026. The exploitability is told to be easy. Attacking locally is a requirement. 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 T1068 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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