Description
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.
Published: 2026-10-08
Score: 6.9 Medium
EPSS: < 1% Very Low
KEV: No
AI Analysis

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Remediation

Vendor Solution

Security update is provided in Brocade Fabric OS 10.0.1

Tracking

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Advisories

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History

Thu, 08 Oct 2026 14:15:00 +0000

Type Values Removed Values Added
Metrics ssvc

{'options': {'Automatable': 'no', 'Exploitation': 'none', 'Technical Impact': 'partial'}, 'version': '2.0.3'}


Thu, 08 Oct 2026 04:15:00 +0000

Type Values Removed Values Added
Title Stack Buffer Overflow in Brocade Fabric OS Certificate Parser Causes DoS

Thu, 08 Oct 2026 03:45:00 +0000

Type Values Removed Values Added
First Time appeared Brocade
Brocade fabric Os
Vendors & Products Brocade
Brocade fabric Os

Thu, 08 Oct 2026 02:45:00 +0000

Type Values Removed Values Added
Description 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.
Weaknesses CWE-121
References
Metrics cvssV4_0

{'score': 6.9, 'vector': 'CVSS:4.0/AV:A/AC:L/AT:N/PR:L/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N'}


Subscriptions

Brocade Fabric Os
cve-icon MITRE

Status: PUBLISHED

Assigner: brocade

Published:

Updated: 2026-10-08T13:09:01.037Z

Reserved: 2026-09-08T22:51:12.167Z

Link: CVE-2026-87676

cve-icon Vulnrichment

Updated: 2026-10-08T13:06:30.574Z

cve-icon NVD

Status : Received

Published: 2026-10-08T03:16:36.950

Modified: 2026-10-08T13:17:20.520

Link: CVE-2026-87676

cve-icon Redhat

No data.

cve-icon OpenCVE Enrichment

Updated: 2026-10-08T04:00:11Z

Weaknesses
  • CWE-121

    Stack-based Buffer Overflow