CVE-2026-18249: IBM I

Critical severity, CVSS 9.9. 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 authenticated attacker to gain elevated privileges due to improper validation of pointers read from Java-controlled addresses.

Affected products

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

Published 2026-08-13. Last modified 2026-08-19.