CVE-2020-4244Network attack vector

Unauthenticated disclosure of valid user accounts

Published May 28, 2020 · Updated Sep 17, 2024

User enumeration in IBM Security Identity Governance and Intelligence 5.2.6 allows remote attackers to identify valid user accounts. IBM identifies the flaw as user enumeration but has not published the affected interface or the response difference that reveals account validity. No authentication or user interaction is required, and the disclosed consequence is limited to learning whether user accounts exist for use in further attacks.

CVSS severity5.3
Medium
EPSS probability1.07%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

User enumeration in IBM Security Identity Governance and Intelligence 5.2.6 allows remote attackers to identify valid user accounts. IBM identifies the flaw as user enumeration but has not published the affected interface or the response difference that reveals account validity. No authentication or user interaction is required, and the disclosed consequence is limited to learning whether user accounts exist for use in further attacks.

The record

CVE
CVE-2020-4244
Published
May 28, 2020
Updated
Sep 17, 2024
Vendor
IBM
Product
IBM Security Identity Governance and Intelligence
Classifications
T1087
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. May 28, 2020CVE publishedPublication date reported by the CVE source.
  2. Sep 17, 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=5.2.6

What conditions does exploitation require?

Attack vectornetwork
Required privilegesunauthenticated

What is affected?

IBM · IBM Security Identity Governance and Intelligenceversion=5.2.6

Published CVSS scores

5.3IBMCVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N
4.6IBMCVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N/E:U/RL:O/RC:C

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.

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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

T1087Account Discovery

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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