CVE-2026-87683

High

Description

Multiple stack-based buffer overflow vulnerabilities exist in the REST API management component of Brocade Fabric OS versions prior to 10.0.1. When processing API request payloads (such as device configuration attributes or port mapping requests) the REST API service fails to properly validate incoming array counts and string lengths against internal buffer capacities. An authenticated attacker with REST API access can transmit crafted, oversized request parameters to induce memory corruption on the execution stack. This may result in a denial-of-service condition (daemon crash) or potential arbitrary code execution within the management process context.

SeverityHigh
CVSS8.8
Exploit probability—
ProductBroadcom Fabric Operating System
PublishedOct 8, 2026
First seenOct 8, 2026
Weakness typeCWE-121CWE-121

How to fix

Update
  • broadcom fabric_operating_system10.0.1 or later

Affected products

ProductAffected versionsFixed in
broadcom fabric_operating_systemv < 10.0.110.0.1

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