Privilege Escalation Vulnerability in IBM i Operating System
CVE-2026-18509

8.2HIGH

Key Information:

Vendor

IBM
Status
I
Vendor
CVE Published:
13 August 2026

What is CVE-2026-18509?

A vulnerability in the IBM i operating system allows local authenticated attackers to escalate their privileges through the Navigator for i debugger. This exploitation can lead to unauthorized access to sensitive data and the ability to manipulate user profiles, potentially allowing attackers to create new accounts with elevated privileges, thus compromising the integrity and security of the system.

Affected Version(s)

i 7.6

i 7.5

i 7.4

References

https://www.ibm.com/support/pages/node/7283279
vendor-advisorypatch

CVSS V3.1

Score:
8.2
Severity:
HIGH
Confidentiality:
High
Integrity:
High
Availability:
High
Attack Vector:
Network
Attack Complexity:
High
Privileges Required:
Low
User Interaction:
None
Scope:
Changed

Timeline

  • Vulnerability published

  • Vulnerability Reserved

.