CVE-2021-29751Network attack vector

Authenticated cross-user information disclosure

Published Jun 28, 2021 · Updated Sep 17, 2024

Incorrect authorization in IBM Business Automation Workflow 18.0 through 20.0 allows remote authenticated users to read another user's sensitive data. The same flaw affects IBM Business Process Manager 8.5 and 8.6 and Cloud Pak for Business Automation 20.0.3-IF002 and 21.0.1, but IBM has not published the affected component or failed authorization operation. Exploitation requires a nondefault configuration and has no reported ability to alter data or interrupt service.

CVSS severity3.1
Low
EPSS probability0.85%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Incorrect authorization in IBM Business Automation Workflow 18.0 through 20.0 allows remote authenticated users to read another user's sensitive data. The same flaw affects IBM Business Process Manager 8.5 and 8.6 and Cloud Pak for Business Automation 20.0.3-IF002 and 21.0.1, but IBM has not published the affected component or failed authorization operation. Exploitation requires a nondefault configuration and has no reported ability to alter data or interrupt service.

The record

CVE
CVE-2021-29751
Published
Jun 28, 2021
Updated
Sep 17, 2024
Vendor
IBM
Product
Business Automation Workflow
Classifications
Unavailable
Attack vector
network
Privileges
authenticated

Timeline

How it unfolded

  1. Jun 28, 2021CVE 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=18.0
  2. Affected versionversion=19.0
  3. Affected versionversion=20.0

What conditions does exploitation require?

Attack vectornetwork
Required privilegesauthenticated

What is affected?

IBM · Business Automation Workflowversion=18.0; version=19.0; version=20.0
IBM · Business Process Managerversion=8.5; version=8.6
IBM · Cloud Pak for Business Automationversion=20.0.3.IF002; version=21.0.1

Published CVSS scores

3.1IBMCVSS:3.0/AV:N/AC:H/PR:L/UI:N/S:U/C:L/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

No sourced classifications are available.

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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