CVE-2026-17057: IBM I

Critical severity, CVSS 9.1. EPSS: 0.4% chance of exploitation in the next 30 days.

IBM i 7.6, 7.5, 7.4, and 7.3 could allow a remote attacker to cause a denial of service and affect data integrity due to missing authentication for critical functions.

Affected products

• IBM I: version 7.3 only; version 7.4 only; version 7.5 only; version 7.6 only

Published 2026-09-04. Last modified 2026-09-08.