CVE-2026-18515: IBM I

Medium severity, CVSS 4.3. EPSS: 0.3% 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 place files into the file system with Navigator for i when they should be blocked by Navigator configuration. This could allow attackers to upload files onto the system to places the Navigator support did not intend, but only if the profile could already do that by itself.

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.