Out-of-bounds Read Vulnerability in IBM AIX and PowerVM Products
CVE-2026-16891

3.3LOW

Key Information:

Vendor

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

What is CVE-2026-16891?

IBM AIX versions 7.2 and 7.3, along with IBM PowerVM VIOS 4.1, are susceptible to a vulnerability that enables local attackers to exploit an out-of-bounds read condition. This flaw could potentially lead to the exposure of sensitive information, compromising system integrity and user privacy. Prompt application of security patches from IBM is advised 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:
3.3
Severity:
LOW
Confidentiality:
Low
Integrity:
None
Availability:
Low
Attack Vector:
Local
Attack Complexity:
Low
Privileges Required:
Low
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/).
.