Remote User Profile Enumeration in IBM i 7.3 to 7.6
CVE-2026-17487

5.3MEDIUM

Key Information:

Vendor

IBM
Status
I
Vendor
CVE Published:
12 October 2026

What is CVE-2026-17487?

IBM i versions 7.3, 7.4, 7.5, and 7.6 could be exploited by an attacker remotely due to a flaw that allows for user profile enumeration. This vulnerability arises from the system’s response to authentication attempts, where distinct error codes can be returned during the sign-on process. These codes may inadvertently disclose information about valid user profiles, making it easier for attackers to conduct targeted attacks. It is crucial for organizations using these versions to assess their exposure and apply available patches to mitigate the risk.

Affected Version(s)

i 7.6

i 7.5

i 7.4

References

https://www.ibm.com/support/pages/node/7290096
vendor-advisorypatch

CVSS V3.1

Score:
5.3
Severity:
MEDIUM
Confidentiality:
Low
Integrity:
None
Availability:
Low
Attack Vector:
Network
Attack Complexity:
Low
Privileges Required:
None
User Interaction:
None
Scope:
Unchanged

Timeline

  • Vulnerability published

  • Vulnerability Reserved

.