CVE-2026-87426NVD

Vulnerability Summary

An unauthenticated network-based attacker can query specific internal management endpoints on Brocade ASCG versions before 3.5.0 to enumerate the configuration details and state of managed Brocade Fabric OS (FOS) switches. This results in the unauthorized disclosure of the customer's SAN fabric management topology and switch connectivity attributes.

Severity Level

MEDIUM(5.3)

Published Date

Oct 8, 2026

Last Modified

Oct 8, 2026

Exploitation Status

No confirmed exploitation yet

EPSS Score (30-Day)

Data Pending

Root Weakness (CWE)

CWE-200: Unknown/Unlisted Weakness ↗

Refer to the official MITRE database for detailed architectural specifications regarding this weakness.

CVSS v4.0 Base Metrics — Score 5.3 (MEDIUM)

Attack VectorAdjacent

Attack ComplexityLow

Attack RequirementsNone

Privileges RequiredNone

User InteractionNone

Confidentiality (Vulnerable System)Low

Integrity (Vulnerable System)None

Availability (Vulnerable System)None

Confidentiality (Subsequent System)None

Integrity (Subsequent System)None

Availability (Subsequent System)None

Affected & Patched Versions

Affected Versions

Brocade Brocade Active Support Connectivity Gateway < 3.5.0

Patched Versions

Brocade Brocade Active Support Connectivity Gateway 3.5.0

🎁7-Day Free Trial — Try Pro or Team, no card required.

📧Email Delivery — Threat intel straight to your inbox.

♾️Unlimited Vendors — Track your entire stack.

🚨All New CVEs — Be the first to know.

📈EPSS Spike Alerts — Catch rising risk before it peaks.

🎯Custom EPSS/CVSS — Filter noise, focus on risk.

🛡️Exploit Intel — A 2nd confirmed-exploit signal beyond KEV.

🐙GitHub Issues — Auto-tracked, no duplicates.

📬Weekly Digest — One clean summary, not inbox spam.

🏷️Watchlist Groups — Tag alerts by team (Infra/AppSec/SOC).

💬Webhooks — Slack & Teams integration.

🔀Smart Routing — Critical alerts to one channel, rest to another.

🚫Ad-Free — Uninterrupted experience.