CVE-2024-4173

Unauthenticated service disruption via exposed Kafka ports

Published Apr 25, 2024 · Updated Aug 1, 2024

Improper network exposure in Brocade SANnav allows remote attackers on an adjacent network to interrupt service through exposed Kafka ports. The IPTables configuration leaves Kafka and Schema Registry ports 19094, 19095, 18081, and 18082 open across the WAN instead of limiting access to discovered Fabric OS switches. No authentication or user interaction is required; versions before 2.2.0 also run Kafka as root with default credentials, expanding confidentiality and integrity impact.

CVSS severity7.6
High
EPSS probability0.59%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Improper network exposure in Brocade SANnav allows remote attackers on an adjacent network to interrupt service through exposed Kafka ports. The IPTables configuration leaves Kafka and Schema Registry ports 19094, 19095, 18081, and 18082 open across the WAN instead of limiting access to discovered Fabric OS switches. No authentication or user interaction is required; versions before 2.2.0 also run Kafka as root with default credentials, expanding confidentiality and integrity impact.

The record

CVE
CVE-2024-4173
Published
Apr 25, 2024
Updated
Aug 1, 2024
Vendor
Brocade Communications Systems
Product
SANnav
Classifications
CWE-200, T1210
Attack vector
adjacent
Privileges
unauthenticated

Timeline

How it unfolded

  1. Apr 25, 2024CVE publishedPublication date reported by the CVE source.
  2. Aug 1, 2024Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

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Is a vulnerable build present?

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  1. Affected versionversion=*

What conditions does exploitation require?

Attack vectoradjacent
Required privilegesunauthenticated

What is affected?

Brocade Communications Systems · SANnavversion=*

Published CVSS scores

7.6Brocade Communications Systems, LLCCVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:H
9.8NIST NVDCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

CVSS describes severity. EPSS estimates exploitation probability.

Attacks

What attackers are doing with it

Daily unique IPs observed by Shadowserver honeypots for known exploited vulnerabilities (KEVs). Missing observations do not establish an absence of attacks.

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No observations available

Sep 9, 2026Sep 15, 2026
Latest reporting daySep 15, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectoradjacent
Privilegesunauthenticated
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-200Exposure of Sensitive Information to an Unauthorized Actor
T1210Exploitation of Remote Services

Public exploit references

No public exploit references are available in this record.

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Technologies

Your stack

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Your stack

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