Heap-Based Buffer Overflow Vulnerability in IBM AIX and PowerVM
CVE-2026-16928

7.5HIGH

Key Information:

Vendor

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

What is CVE-2026-16928?

A vulnerability in IBM AIX 7.2, 7.3, and IBM PowerVM VIOS 4.1 can be exploited by remote attackers to induce a denial of service through a heap-based buffer overflow. This flaw may allow attackers to disrupt system functionality, posing serious risks to users such as service unavailability and potential data loss.

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:
7.5
Severity:
HIGH
Confidentiality:
None
Integrity:
None
Availability:
None
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/).
.