CVE-2026-87683

What it is

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.

At a glance

Exploitability

Can be exploited from the same network segment with a low-privilege account. High risk of data exposure, data tampering, service disruption.

Exploit odds

0.5% chance of exploitation in the next 30 days (EPSS).

Fix

A patch, advisory or fixed version is referenced. Upgrade or apply it.

Timeline

1. 2026-10-08 02:16 UTC PublishedDisclosed publicly on CVE.org and NVD
2. 2026-10-13 17:27 UTC Last updatedMost recent change to the record

Details

Published

2026-10-08 02:16 UTC

Last modified

2026-10-13 17:27 UTC

Exploit probability

0.5% · EPSS, next 30 days

Weakness

CWE-121

Record status

Analyzed

Affected

• Broadcom Fabric Operating System < 10.0.1

Attack profile CVSS 4.0 · 8.6

Attack vector

Adjacent network

Complexity

Low

Attack requirements

None

Privileges needed

Low

User interaction

None

Confidentiality

High

Integrity

High

Availability

High