CVE-2026-87681 Privilege escalation in Fabric OS

What is CVE-2026-87681?

CVE-2026-87681 is a high-severity vulnerability in Broadcom Fabric Operating System, published on 8 Oct 2026. It can only be exploited from the same machine or local network, with no action from the victim.

Official description

An Access Control Bypass vulnerability exists in the Role-Based Access Control (RBAC) validation engine of Brocade Fabric OS versions before 10.0.1. When processing certain management protocol operations, the RBAC engine incorrectly categorizes non-standard action opcodes during permission checks. This allows authenticated users with read-only management privileges to bypass access controls and execute restricted administrative operations.

Weakness: CWE-269

Which versions are affected by CVE-2026-87681?

It affects 1 product.

Products include Broadcom Fabric Operating System.

How do I fix CVE-2026-87681?

No fix has been published for CVE-2026-87681 yet. Limit exposure of the affected software until one is available.

Is CVE-2026-87681 being exploited?

There is no known exploitation of CVE-2026-87681 in the wild and no public exploit code.

Other vulnerabilities in Broadcom Fabric Operating System

• CVE-2025-1976 Broadcom Brocade Fabric OS Code Injection Exploited High 8.6
• CVE-2021-22555 Linux Kernel Heap Out-of-Bounds Write Exploited High 8.3
• CVE-2022-33186 Command injection in Brocade Fabric OS Critical 9.8
• CVE-2021-27797 Hardcoded credentials in Brocade Fabric OS Critical 9.8
• CVE-2020-15371 Code injection in Brocade Fabric OS Critical 9.8

All Broadcom Fabric Operating System vulnerabilities

Sources

• CVE record
• NVD
• OSV
• GitHub advisory
• How this page is made

Also known as GHSA-h7f4-226j-w5j6.