---
id: CVE-2026-87674
title: >-
  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
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 a…
severity: high
cvss: 7.8
cvssVector: 'CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H'
cwe:
  - CWE-78
vendor: broadcom
product: fabric_operating_system
affected:
  - fabric_operating_system < 9.2.2d
  - 'fabric_operating_system >= 10.0.0, < 10.0.1'
patched:
  - fabric_operating_system 10.0.1
published: '2026-10-08'
updated: '2026-10-14'
sourceUpdated: '2026-10-14T19:11:51.050'
source: NVD
sourceUrl: 'https://nvd.nist.gov/vuln/detail/CVE-2026-87674'
references:
  - url: 'https://support.broadcom.com/external/content/SecurityAdvisories/0/39145'
    label: sirt@brocade.com
tags:
  - nvd
  - cve.org
epss: 0.00121
epssPercentile: 0.0191
ssvc:
  exploitation: none
  automatable: 'no'
  technicalImpact: total
  timestamp: '2026-10-08T13:11:30.735648Z'
scores:
  nvd: 7.8
  cna: 8.5
ingestedAt: '2026-10-08T04:04:32.124Z'
---

## Overview

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.

## Affected

- `fabric_operating_system < 9.2.2d`
- `fabric_operating_system >= 10.0.0, < 10.0.1`

## Remediation

Upgrade past the affected range:

- `fabric_operating_system 10.0.1`