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 · last modified 2026-10-06.

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

EPSS: 0.006 (50.0th percentile), scored 2026-11-04.

Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 50th percentile — 50.0% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.

EPSS over last 30 days · oldest: 0.005 · newest: 0.006 · change: +0.002

Affected products

IBM Datastage On Cloud Pak For Data — versions 5.4.0.0
IBM Datastage On Cloud Pak For Data — versions 5.4.0

Weakness classification (CWE)

CWE-285 — Improper Authorization

References

www.ibm.com/support/pages/node/7288649 (vendor-advisory, Patch, patch, Vendor Advisory)

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.