Local Authorization Vulnerability in IBM i Operating System
CVE-2026-18343

4.4MEDIUM

Key Information:

Vendor

IBM
Status
I
Vendor
CVE Published:
12 October 2026

What is CVE-2026-18343?

A local authorization vulnerability in IBM i versions 7.3, 7.4, 7.5, and 7.6 allows an attacker with local access to modify the BOOTP table due to inadequate authorization controls. This can potentially compromise system integrity and lead to further exploitation. Users are advised to apply patches as outlined in the official vendor advisory to mitigate this risk.

Affected Version(s)

i 7.6

i 7.5

i 7.4

References

https://www.ibm.com/support/pages/node/7290194
vendor-advisorypatch

CVSS V3.1

Score:
4.4
Severity:
MEDIUM
Confidentiality:
Low
Integrity:
Low
Availability:
Low
Attack Vector:
Local
Attack Complexity:
Low
Privileges Required:
Low
User Interaction:
None
Scope:
Unchanged

Timeline

  • Vulnerability published

  • Vulnerability Reserved

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