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CVE-2017-6227

21
FAUCET Score

CVE-2017-6227 is a denial-of-service vulnerability affecting Brocade Fibre Channel SAN products running specific versions of Brocade Fabric OS. An attacker on the same network segment could exploit this by sending specially crafted IPv6 Router Advertisement messages, leading to high CPU consumption and a device hang. Rated as medium severity (CVSS 6.5), it requires adjacent network access but no user interaction. There is no known active exploitation, public exploit code, or significant community discussion surrounding this vulnerability.

Impacted Technologies

VendorProductVersion(s)CPE
< 7.4.2bCPE matchmatch criteria
cpe:2.3:o:broadcom:fabric_operating_system:*:*:*:*:*:*:*:*
8.0.0CPE matchmatch criteria
cpe:2.3:o:broadcom:fabric_operating_system:8.0.0:*:*:*:*:*:*:*
8.0.1CPE matchmatch criteria
cpe:2.3:o:broadcom:fabric_operating_system:8.0.1:*:*:*:*:*:*:*
8.0.2CPE matchmatch criteria
cpe:2.3:o:broadcom:fabric_operating_system:8.0.2:*:*:*:*:*:*:*
8.1.0CPE matchmatch criteria
cpe:2.3:o:broadcom:fabric_operating_system:8.1.0:*:*:*:*:*:*:*

CVSS Data

CVSS version used by this source: 3.0

6.5MEDIUM

CVSS:3.0/AV:A/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

Attack Vector
ADJACENT_NETWORK
Attack Complexity
LOW
Privileges Required
NONE
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
NONE
Integrity Impact
NONE
Availability Impact
HIGH
Exploitability Score
2.8
Impact Score
3.6
CvssVersion
3.0

Exploit Intelligence

EPSS Score
0.54%
Probability of exploitation in next 30 days
EPSS Percentile
42.4%
Percentile rank of EPSS score among Peer Group
As of 2026-07-28
Model: v2026.06.15
This CVE's current EPSS score of 0.0054 is in the 66th percentile among its peer group of 1,802 CVEs.

Social Chatter

The average CVE in this peer group has 0.0 Twitter, 0.0 Reddit, 0.1 Bluesky, 0.0 Mastodon, and 0.1 GitHub mentions.

Media Mentions

No media coverage found for this CVE.

The average CVE in this peer group has 0.1 InfoSec Media, 0.0 Vendor Blog, and 0.0 Security Researcher mentions.

Remediation

Remediation records are not available for this CVE.

References

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