CVE-2023-27589Network attack vector

Root access denial via conditional collision check

Published Mar 14, 2023 · Updated Feb 25, 2025

Improper privilege management in MinIO allows remote authenticated users with consoleAdmin rights to disable root credential access. In AddUser and ImportIAM, the root-key collision check ran only when owner was true, so consoleAdmin callers could add the active root access key to IAM. Successful insertion permanently disables root credentials without interrupting object service.

CVSS severity6.5
Medium
EPSS probability0.90%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Improper privilege management in MinIO allows remote authenticated users with consoleAdmin rights to disable root credential access. In AddUser and ImportIAM, the root-key collision check ran only when owner was true, so consoleAdmin callers could add the active root access key to IAM. Successful insertion permanently disables root credentials without interrupting object service.

The record

CVE
CVE-2023-27589
Published
Mar 14, 2023
Updated
Feb 25, 2025
Vendor
MinIO
Product
MinIO
Classifications
CWE-269, T1531
Attack vector
network
Privileges
admin

Timeline

How it unfolded

  1. Mar 14, 2023CVE publishedPublication date reported by the CVE source.
  2. Feb 25, 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=>= RELEASE.2020-12-23T02-24-12Z, < RELEASE.2023-03-13T19-46-17Z

What conditions does exploitation require?

Attack vectornetwork
Required privilegesadmin

What is affected?

MinIO · MinIOversion=>= RELEASE.2020-12-23T02-24-12Z, < RELEASE.2023-03-13T19-46-17Z

Published CVSS scores

6.5GitHub, Inc.CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:N/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
Privilegesadmin
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-269Improper Privilege Management
T1531Account Access Removal

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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