CVE-2026-87665

A stack-based buffer overflow vulnerability exists in the Internet Key Exchange (IKEv2) protocol handler on Brocade Fabric OS versions before 10.0.1. The vulnerability occurs when processing initial IKE key exchange requests on extension switches or blades running IPsec-enabled Fibre Channel over IP (FCIP) circuits. An unauthenticated remote attacker can exploit this vulnerability by sending a single, specifically crafted UDP packet (Port 500) containing an oversized Nonce payload. Successful exploitation results in a denial of service (data-plane process crash)

CVSS v3 7.5 HIGH

7.5^/10

CVSS v3 : HIGH

Vector :

Exploitability : 3.9 / Impact : 3.6

Attack Vector NETWORK

Attack Complexity LOW

Privileges Required NONE

User Interaction NONE

Confidentiality Impact NONE

Integrity Impact NONE

Availability Impact HIGH

Scope UNCHANGED

References

Link	Resource
https://support.broadcom.com/external/content/SecurityAdvisories/0/39148	Vendor Advisory

Configurations

Configuration 1 (hide)

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

History

13 Oct 2026, 17:24

Type	Values Removed	Values Added
References	~~() https://support.broadcom.com/external/content/SecurityAdvisories/0/39148 -~~	() https://support.broadcom.com/external/content/SecurityAdvisories/0/39148 - Vendor Advisory
CVSS	v2 : ~~unknown~~ v3 : ~~unknown~~	v2 : unknown v3 : 7.5
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 : 2026-10-13 17:24

NVD link : CVE-2026-87665

Mitre link : CVE-2026-87665

CVE.ORG link : CVE-2026-87665

JSON object : View

Products Affected

broadcom

fabric_operating_system

CWE

CWE-121

Stack-based Buffer Overflow

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