What is CVE-2026-81212?

CVE-2026-81212 is a critical-severity vulnerability in IBM Datastage On Cloud Pak For Data, classified under Improper Authorization. CVSS score: 10.0/10. Published 2026-10-20.

How severe is CVE-2026-81212?

Critical severity. CVSS v3 base score is 10.0 out of 10.

Auth bypass in IBM Datastage On Cloud Pak For Data

CVE-2026-81212

IBM DataStage on Cloud Pak for Data 5.4.0.0 allows an unauthenticated user to perform an arbitrary write into shared Redis under any tenant's key. This collapses the platform's credential-encryption boundary and lets an anonymous caller poison any tenant's cached flow parameters.

Published 2026-10-20 · last modified 2026-10-21.

CVSS v3 metric

CVSS v3 base score 10.0 (Critical). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:N.

EPSS exploit prediction

No EPSS score from FIRST.org yet. New CVEs usually get one within a few days; no score means no signal yet, not low risk. How EPSS works.

Affected products

IBM Datastage On Cloud Pak For Data — versions 5.4.0.0

Weakness classification (CWE)

CWE-285 — Improper Authorization

References

www.ibm.com/support/pages/node/7289603 (vendor-advisory, patch)

Frequently asked questions

What is CVE-2026-81212?: CVE-2026-81212 is a critical-severity vulnerability in IBM Datastage On Cloud Pak For Data, classified under Improper Authorization. CVSS score: 10.0/10. Published 2026-10-20.
How severe is CVE-2026-81212?: Critical severity. CVSS v3 base score is 10.0 out of 10.