Local Privilege Escalation and Configuration Injection in Brocade Fabric OS System Logging Daemon
39145
06 October 2026
06 October 2026
OPEN
HIGH
8.5 - CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N
CVE-2026-87674
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Brocade Security Advisory ID |
BSA-2026-3962 |
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Component |
Fabric OS System Logging |
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CWE |
CWE-78: Improper Neutralization of Special Elements used in an OS Command ('OS Command Injection') |
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Summary:
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.
Products Affected
- Brocade Fabric OS versions before 9.2.2d and 10.0.0 through 10.0.0a1
Products Not Affected
- Brocade SANnav is not affected by this vulnerability
[VEX Justification: Component_not_present] - Brocade ASCG is not affected by this vulnerability
[VEX Justification: Component_not_present]
Solution
- A security update is provided in Brocade Fabric OS 9.2.2d and 10.0.1
Note: This is a Frontier AI discovered vulnerability.
Revision History
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Version |
Change |
Date |
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1.0 |
Initial Publication |
October 6, 2026 |
Disclaimer
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