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.

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.

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.

Affected products

Ibm Datastage On Cloud Pak For Data — versions 5.4.0.0

Weakness classification (CWE)

CWE-73 — External Control of File Name or Path

References

psirt@us.ibm.com (vendor-advisory, patch)

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.