CVE-2026-17276: IBM I

Critical severity, CVSS 9.9. EPSS: 0.5% 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 escalate privileges due to improper authorization in the handling of high-authority threads.

Affected products

• IBM I: from 7.3, up to and including 7.6

Published 2026-08-12. Last modified 2026-08-13.