CVE-2026-87679 | BDVDB-2026-384584 Detail

BrocadeFabric OS

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.

Impact#

CAPEC-10 Buffer Overflow via Environment Variables

Weaknesses#

CWE-122 Heap-based Buffer Overflow

References#

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

Exploit#

No public exploit known

History#

Version 12026-10-08Record published in the CVE List.

Published

Published: 2026-10-08
Last modified: 2026-10-08

Vendor information

Vendor: Brocade
Product: Fabric OS

All Brocade vulnerabilities

Score

8.5 High

EPSS

less than 1%, Very Low

Estimated chance of exploitation in the next 30 days. EPSS percentile: 29.9.

KEV

Not listed in the CISA Known Exploited Vulnerabilities catalog.

Impact

Memory Corruption

Action

No specific action is recorded in the source data. Check the references for vendor guidance.

Affected Systems

Vulnerable
< 10.0.1
Fixed
10.0.1

Scoring System

CVSS v4.0

8.5 High

CVSS:4.0/AV:A/AC:L/AT:N/PR:H/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N

Metric breakdown
Attack Vector	Adjacent
Attack Complexity	Low
Attack Requirements	None
Privileges Required	High
User Interaction	None
Vulnerable System Confidentiality	High
Vulnerable System Integrity	High
Vulnerable System Availability	High
Subsequent System Confidentiality	None
Subsequent System Integrity	None
Subsequent System Availability	None

CVSS v3.1

Not available

CVSS v3.0

Not available

CVSS v2

Not available

Source: CVE List v5 (record); CISA KEV (kev, action); FIRST EPSS (epss).