Authentication Vulnerability in IBM AIX and PowerVM Products
CVE-2026-16686

8.2HIGH

Key Information:

Vendor

IBM
Status
Aix
Powervm ViOS
Vendor
CVE Published:
19 August 2026

What is CVE-2026-16686?

IBM AIX versions 7.2 and 7.3, along with IBM PowerVM VIOS version 4.1, are susceptible to a vulnerability that allows remote attackers to gain unauthorized access to NFS-exported filesystems. This weakness stems from inadequate authentication mechanisms, which can result in potential data breaches and unauthorized data manipulation. It is critical for users of these products to apply the recommended patches and enhance their security measures to mitigate this risk.

Affected Version(s)

AIX 7.2

AIX 7.3

PowerVM VIOS 4.1

References

https://www.ibm.com/support/pages/node/7283858
vendor-advisorypatch

CVSS V3.1

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

Timeline

  • Vulnerability published

  • Vulnerability Reserved

Credit

CVE-2026-14970, CVE-2026-15061, CVE-2026-15078, CVE-2026-15065, CVE-2026-15068 were reported to IBM by Oneconsult AG (https://oneconsult.com/).
.