Remote Denial of Service Vulnerability in IBM AIX and PowerVM
CVE-2026-16851

7.4HIGH

Key Information:

Vendor

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

What is CVE-2026-16851?

A denial of service vulnerability has been identified in IBM AIX versions 7.2 and 7.3, as well as in IBM PowerVM VIOS 4.1. This vulnerability could potentially allow a remote attacker to exploit it, resulting in service interruptions. The issue stems from a use-after-free error, which could be leveraged to destabilize and disrupt system operations, thereby risking availability and operational integrity.

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:
7.4
Severity:
HIGH
Confidentiality:
None
Integrity:
None
Availability:
None
Attack Vector:
Adjacent Network
Attack Complexity:
Low
Privileges Required:
None
User Interaction:
None
Scope:
Changed

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/).
.