CVE-2026-18151: IBM I

Medium severity, CVSS 4.2. EPSS: 0.1% 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 obtain sensitive information due to a race condition during the WebSocket handshake process.

Affected products

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

Published 2026-09-14. Last modified 2026-09-16.