CVE-2023-38273Network attack vector

Credential brute forcing via inadequate account lockout

Published Feb 2, 2024 · Updated Aug 2, 2024

Improper account lockout in IBM Cloud Pak System 2.3.1.1, 2.3.2.0, and 2.3.3.0 through 2.3.3.7 allows remote attackers to brute-force credentials. IBM identifies the mechanism only as an inadequate account-lockout setting and does not disclose the affected authentication component or threshold. No prior access or user interaction is required; successful guessing reveals valid account credentials, with no reported integrity or availability impact.

CVSS severity7.5
High
EPSS probability0.67%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Improper account lockout in IBM Cloud Pak System 2.3.1.1, 2.3.2.0, and 2.3.3.0 through 2.3.3.7 allows remote attackers to brute-force credentials. IBM identifies the mechanism only as an inadequate account-lockout setting and does not disclose the affected authentication component or threshold. No prior access or user interaction is required; successful guessing reveals valid account credentials, with no reported integrity or availability impact.

The record

CVE
CVE-2023-38273
Published
Feb 2, 2024
Updated
Aug 2, 2024
Vendor
IBM
Product
Cloud Pak System
Classifications
CWE-307, T1110
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. Feb 2, 2024CVE publishedPublication date reported by the CVE source.
  2. Aug 2, 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=2.3.1.1
  2. Affected versionversion=2.3.1.1, 2.3.2.0, 2.3.3.7
  3. Affected versionversion=2.3.2.0
  4. Affected versionversion=2.3.3.7

What conditions does exploitation require?

Attack vectornetwork
Required privilegesunauthenticated

What is affected?

IBM · Cloud Pak Systemversion=2.3.1.1; version=2.3.1.1, 2.3.2.0, 2.3.3.7; version=2.3.2.0; version=2.3.3.7

Published CVSS scores

7.5NIST NVDCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N
7.5IBM CorporationCVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/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
Privilegesunauthenticated
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-307Improper Restriction of Excessive Authentication Attempts
T1110Brute Force

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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