CVE-2026-18669: IBM I

High severity, CVSS 8.8. EPSS: 0.7% chance of exploitation in the next 30 days.

IBM i 7.6, 7.5, 7.4, and 7.3 is vulnerable to a privilege escalation as the result of a remote code execution vulnerability in the activation engine component. An authenticated attacker can execute a maliciously planted script with root authority.

Affected products

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

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