CVE-2019-16203Network attack vector

Credential exposure via ESRS CLI arguments

Published Feb 5, 2020 · Updated Aug 5, 2024

Information exposure in Brocade Fabric OS before 8.2.2a and 8.2.1d allows remote authenticated users to expose ESRS server credentials via CLI options. The ESRS client stores command-line arguments in switch CLI history or the audit log when credentials are supplied during configuration, allowing later disclosure through a SupportSave to support personnel. ESRS is not enabled by default, so exploitation requires the client to be configured with command-line credentials; other switch users cannot view the values directly.

CVSS severity7.5
High
EPSS probability1.38%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Information exposure in Brocade Fabric OS before 8.2.2a and 8.2.1d allows remote authenticated users to expose ESRS server credentials via CLI options. The ESRS client stores command-line arguments in switch CLI history or the audit log when credentials are supplied during configuration, allowing later disclosure through a SupportSave to support personnel. ESRS is not enabled by default, so exploitation requires the client to be configured with command-line credentials; other switch users cannot view the values directly.

The record

CVE
CVE-2019-16203
Published
Feb 5, 2020
Updated
Aug 5, 2024
Vendor
Brocade Communications Systems
Product
Brocade Fabric OS
Classifications
CWE-532, T1552.001
Attack vector
network
Privileges
authenticated

Timeline

How it unfolded

  1. Feb 5, 2020CVE publishedPublication date reported by the CVE source.
  2. Aug 5, 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?

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

  1. Affected versionversion=Brocade Fabric OS Versions before v8.2.2a and v8.2.1d

What conditions does exploitation require?

Attack vectornetwork
Required privilegesauthenticated

What is affected?

Brocade Communications Systems · Brocade Fabric OSversion=Brocade Fabric OS Versions before v8.2.2a and v8.2.1d

Published CVSS scores

7.5NVDCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N
5.0NVDAV:N/AC:L/Au:N/C:P/I:N/A:N

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
Privilegesauthenticated
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-532Exposure of Sensitive Information Through Log Files
T1552.001Unsecured Credentials in Files

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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