CVE-2022-33186Network attack vector

Unauthenticated command execution via EZServer requests

Published Dec 8, 2022 · Updated Apr 23, 2025

OS command injection in Brocade Fabric OS 9.1.1, 9.0.1e, 8.2.3c, 7.4.2j and earlier allows remote attackers to control switches. The root-level superd service on UDP port 52357 accepts cleartext EZSwitchSetup management requests without authentication and routes requester-controlled fields into system() command paths. EZServer must be enabled; successful requests can alter zoning, ports, or IP configuration or disable the switch.

CVSS severity9.4
Critical
EPSS probability1.56%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

OS command injection in Brocade Fabric OS 9.1.1, 9.0.1e, 8.2.3c, 7.4.2j and earlier allows remote attackers to control switches. The root-level superd service on UDP port 52357 accepts cleartext EZSwitchSetup management requests without authentication and routes requester-controlled fields into system() command paths. EZServer must be enabled; successful requests can alter zoning, ports, or IP configuration or disable the switch.

The record

CVE
CVE-2022-33186
Published
Dec 8, 2022
Updated
Apr 23, 2025
Vendor
Brocade Communications Systems
Product
Brocade Fabric OS
Classifications
CWE-78, T1190
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. Dec 8, 2022CVE publishedPublication date reported by the CVE source.
  2. Apr 23, 2025Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

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Is a vulnerable build present?

Compare these published version ranges with your installed build and any vendor patches.

  1. Affected versionversion=Brocade Fabric OS software v9.1.1, v9.0.1e, v8.2.3c, v7.4.2j, and earlier versions

What conditions does exploitation require?

Attack vectornetwork
Required privilegesunauthenticated

What is affected?

Brocade Communications Systems · Brocade Fabric OSversion=Brocade Fabric OS software v9.1.1, v9.0.1e, v8.2.3c, v7.4.2j, and earlier versions

Published CVSS scores

9.4BroadcomCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:H/A:H
9.8CISA ADP VulnrichmentCVSS: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.

Daily unique IPsNo honeypot observations are available for this CVE in the selected window.

No observations available

Sep 10, 2026Sep 16, 2026
Latest reporting daySep 16, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectornetwork
Privilegesunauthenticated
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-78Improper Neutralization of Special Elements used in an OS Command ('OS Command Injection')
T1190Exploit Public-Facing Application

Public exploit references

No public exploit references are available in this record.

Labels summarize the accepted research assessment. They do not indicate a test against your environment.

Technologies

Your stack

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Your stack

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