Vulnerability in IBM Datastage On Cloud Pak For Data

CVE-2026-16338

IBM DataStage on Cloud Pak for Data 5.4.0.0 IBM DataStage could allow a remote authenticated attacker to perform an arbitrary file write due to improper validation of file paths.

Published · last modified .

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: 0.004 (38.2th percentile), scored .

Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 38th percentile — 38.2% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.

EPSS trend (30 days)EPSS over the last 30 days for CVE-2026-16338: held from 0.004 to 0.004.

EPSS over last 30 days · oldest: 0.004 · newest: 0.004 · change: +0.000

Affected products

Weakness classification (CWE)

References

Frequently asked questions

What is CVE-2026-16338?
CVE-2026-16338 is a critical-severity vulnerability in IBM Datastage On Cloud Pak For Data, classified under External Control of File Name or Path. CVSS score: 9.9/10. Published 2026-09-14.
How severe is CVE-2026-16338?
Critical severity. CVSS v3 base score is 9.9 out of 10.