CVE-2026-87676

A stack-based buffer overflow vulnerability exists in the security library component of Brocade Fabric OS versions before 10.0.1. When parsing uploaded X.509 PEM certificates for management display, the system improperly validates the length of the Authority Key Identifier (AKI) extension before copying string tokens into an internal memory buffer. An authenticated user with administrative privileges to import custom certificates can supply a certificate containing an intentionally oversized AKI extension. When the system processes or renders the certificate attributes, this can trigger a stack memory corruption leading to a denial-of-service (DoS) condition by crashing the management daemon.

CVSS v3 5.7 MEDIUM

5.7^/10

CVSS v3 : MEDIUM

Vector :

Exploitability : 2.1 / Impact : 3.6

Attack Vector ADJACENT_NETWORK

Attack Complexity LOW

Privileges Required LOW

User Interaction NONE

Confidentiality Impact NONE

Integrity Impact NONE

Availability Impact HIGH

Scope UNCHANGED

References

Link	Resource
https://support.broadcom.com/external/content/SecurityAdvisories/0/39082	Vendor Advisory

Configurations

Configuration 1 (hide)

cpe:2.3:o:broadcom:fabric_operating_system:*:*:*:*:*:*:*:*

History

14 Oct 2026, 14:47

Type	Values Removed	Values Added
CVSS	v2 : ~~unknown~~ v3 : ~~unknown~~	v2 : unknown v3 : 5.7
References	~~() https://support.broadcom.com/external/content/SecurityAdvisories/0/39082 -~~	() https://support.broadcom.com/external/content/SecurityAdvisories/0/39082 - Vendor Advisory
First Time		Broadcom fabric Operating System Broadcom
CPE		cpe:2.3:o:broadcom:fabric_operating_system::::::::

08 Oct 2026, 03:16

Type	Values Removed	Values Added
New CVE

Information

Published : 2026-10-08 03:16

Updated : 2026-10-14 14:47

NVD link : CVE-2026-87676

Mitre link : CVE-2026-87676

CVE.ORG link : CVE-2026-87676

JSON object : View

Products Affected

broadcom

fabric_operating_system

CWE

CWE-121

Stack-based Buffer Overflow

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