CVE-2026-87679: When Brocade Fabric OS versions before 10.0.1 processes trunk configuration operations, the application parses user-supplied list strings into dynamically allocated heap arrays… | LiveThreat CVE Feed — Verisq

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High severity · published Oct 8, 2026

CVE-2026-87679

When Brocade Fabric OS versions before 10.0.1 processes trunk configuration operations, the application parses user-supplied list strings into dynamically allocated heap arrays…

7.2

CVSS

0.4%

EPSS

No

On KEV

Description

When Brocade Fabric OS versions before 10.0.1 processes trunk configuration operations, the application parses user-supplied list strings into dynamically allocated heap arrays without enforcing boundary checks on the maximum allowable number of elements. An authenticated administrator can exploit this vulnerability via crafted REST API requests containing an excessive number of list delimiters, causing heap corruption that can result in service crash or arbitrary code execution.

CVSS vector

CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H

Attack vector

Network

Complexity

Low

Privileges

High

User interaction

None

Confidentiality

High

Integrity

High

Availability

High

Scope

Unchanged

Exploitation

Is it being used?

Exploit prediction (EPSS)0.4% · higher than 29% of CVEs

Exploited in the wildNo evidence yet

CISA KEVNot listed

Ransomware campaign useNot known

Affected products

Which versions

FO

Fabric OS · Brocade

before 10.0.1 · source: vendor

FO

Fabric Operating System · Broadcom

before 10.0.1 · source: NVD

Affected product

FO

Fabric OS

Brocade

All Fabric OS CVEs

References

https://nvd.nist.gov/vuln/detail/CVE-2026-87679

https://www.cve.org/CVERecord?id=CVE-2026-87679

support.broadcom.com

https://support.broadcom.com/external/content/SecurityAdvisories/0/39073

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