What is CVE-2026-16346?

CVE-2026-16346 is a critical-severity vulnerability in IBM Datastage On Cloud Pak For Data, classified under Improper Authorization. CVSS score: 9.9/10. Published 2026-09-22.

How severe is CVE-2026-16346?

Critical severity. CVSS v3 base score is 9.9 out of 10.

Auth bypass in IBM Datastage On Cloud Pak For Data

CVE-2026-16346

IBM DataStage on Cloud Pak for Data 5.4.0.0 could allow a remote authenticated attacker to execute arbitrary commands due to improper neutralization of special elements used in an OS command.

Published 2026-09-22.

CVSS v3 metric

CVSS v3 base score 9.9 (Critical). Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H.

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/7288649 (vendor-advisory, patch)

Frequently asked questions

What is CVE-2026-16346?: CVE-2026-16346 is a critical-severity vulnerability in IBM Datastage On Cloud Pak For Data, classified under Improper Authorization. CVSS score: 9.9/10. Published 2026-09-22.
How severe is CVE-2026-16346?: Critical severity. CVSS v3 base score is 9.9 out of 10.