What is CVE-2026-17073?

CVE-2026-17073 is a medium-severity vulnerability in IBM I, classified under Improper Access Control. CVSS score: 5.4/10. Published 2026-10-16.

How severe is CVE-2026-17073?

Medium severity. CVSS v3 base score is 5.4 out of 10.

Vulnerability in IBM I

CVE-2026-17073

IBM i 7.3, 7.4, 7.5, and 7.6 could allow a local attacker to obtain sensitive information due to missing subtree checks during file handle resolution.

Published 2026-10-16 · last modified 2026-10-16.

CVSS v3 metric

CVSS v3 base score 5.4 (Medium). Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:L/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 I — versions 7.3, 7.4, 7.5

Weakness classification (CWE)

CWE-284 — Improper Access Control

References

www.ibm.com/support/pages/node/7292423 (vendor-advisory, patch)

Frequently asked questions

What is CVE-2026-17073?: CVE-2026-17073 is a medium-severity vulnerability in IBM I, classified under Improper Access Control. CVSS score: 5.4/10. Published 2026-10-16.
How severe is CVE-2026-17073?: Medium severity. CVSS v3 base score is 5.4 out of 10.