Privilege Escalation Vulnerability in IBM i Operating System
CVE-2026-16856

8.8HIGH

Key Information:

Vendor

IBM
Status
I
Vendor
CVE Published:
12 August 2026

What is CVE-2026-16856?

A local attacker can exploit a vulnerability in IBM i versions 7.6 and 7.5 to gain elevated privileges. This exploit arises from the improper handling of special elements in OS command executions, potentially allowing unauthorized access and control over system resources. Users are advised to review the vendor advisory for mitigation steps and apply any recommended patches.

Affected Version(s)

i 7.6

i 7.5

References

https://www.ibm.com/support/pages/node/7283284
vendor-advisorypatch

CVSS V3.1

Score:
8.8
Severity:
HIGH
Confidentiality:
High
Integrity:
High
Availability:
High
Attack Vector:
Network
Attack Complexity:
Low
Privileges Required:
Low
User Interaction:
None
Scope:
Unchanged

Timeline

  • Vulnerability published

  • Vulnerability Reserved

.