CVE-2025-36221Network attack vector

Unauthenticated access via default manufacturing passwords

Published May 26, 2026 · Updated May 26, 2026

Default-credential handling in IBM Cloud Pak for Data System Cyclops 11.3.0.2 through Interim Fix 002 allows remote attackers to bypass authentication. The installation credential workflow uses manufacturing-set default passwords rather than unique per-installation values. No privileges or user interaction are required; successful use grants the access assigned to the default-password account, whose permissions IBM does not specify.

CVSS severity5.3
Medium
EPSS probability0.27%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Default-credential handling in IBM Cloud Pak for Data System Cyclops 11.3.0.2 through Interim Fix 002 allows remote attackers to bypass authentication. The installation credential workflow uses manufacturing-set default passwords rather than unique per-installation values. No privileges or user interaction are required; successful use grants the access assigned to the default-password account, whose permissions IBM does not specify.

The record

CVE
CVE-2025-36221
Published
May 26, 2026
Updated
May 26, 2026
Vendor
OpenBMC Project
Product
IBM Cloud Pak for Data System Cyclops
Classifications
CWE-1392, T1078.001
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. May 26, 2026CVE publishedPublication date reported by the CVE source.
  2. May 26, 2026Record 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=11.3.0.2 <=Interim Fix 002

What conditions does exploitation require?

Attack vectornetwork
Required privilegesunauthenticated

What is affected?

OpenBMC Project · IBM Cloud Pak for Data System Cyclopsversion=11.3.0.2 <=Interim Fix 002

Published CVSS scores

5.3IBM CorporationCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:N
7.5NIST NVDCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/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
Privilegesunauthenticated
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-1392Use of Default Credentials
T1078.001Valid Accounts: Default Accounts

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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