---
title: "CVE-2026-81212: IBM DataStage on Cloud Pak for Data - Broken Access Control"
description: "IBM DataStage on Cloud Pak for Data 5.4.0.0 contains an unrestricted write vulnerability caused by unauthenticated access to shared Redis, letting anonymous attackers poison any tenant's cached flow parameters, exploit requires no authentication."
url: https://panop.io/threat-heartbeat/CVE-2026-81212/
---

# CVE-2026-81212 IBM DataStage on Cloud Pak for Data - Broken Access Control

IBM DataStage on Cloud Pak for Data 5.4.0.0 contains an unrestricted write vulnerability caused by unauthenticated access to shared Redis, letting anonymous attackers poison any tenant's cached flow parameters, exploit requires no authentication.

CVSS base score 10.0 /10

Critical

CISA KEV

Not listed

Public exploit

None known

Authentication

Not required

[View the NVD record ↗](https://nvd.nist.gov/vuln/detail/CVE-2026-81212)

## Details

Type

Broken Access Control

Impact

Data Tampering

CVSS vector

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:N

Published

20 October 2026

Updated

21 October 2026

Weakness

[CWE-285](https://cwe.mitre.org/data/definitions/285.html)

## Vendor fix

Update to the latest version of IBM DataStage on Cloud Pak for Data.

Patching closes this CVE. It does not tell you which of your systems run the affected version, or what else is exposed alongside them.

## References

- [https://nvd.nist.gov/vuln/detail/CVE-2026-81212](https://nvd.nist.gov/vuln/detail/CVE-2026-81212)
- [https://www.ibm.com/support/pages/node/7289603](https://www.ibm.com/support/pages/node/7289603)

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## What this record can't tell you

- Whether you run the affected software, and where
- Whether an attacker can actually reach and exploit it
- The misconfigurations that never get a CVE number
- What it would cost the business, ranked into what to fix first

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