Out-of-Bounds Read Vulnerability in IBM AIX and PowerVM
CVE-2026-18716

7.9HIGH

Key Information:

Vendor

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

What is CVE-2026-18716?

IBM AIX versions 7.2 and 7.3, along with IBM PowerVM VIOS version 4.1, are affected by a vulnerability that could allow remote authenticated attackers to access sensitive information or induce a denial of service through an out-of-bounds read. This vulnerability poses a significant risk, necessitating immediate attention and potential patching as suggested by vendor advisories.

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:
7.9
Severity:
HIGH
Confidentiality:
Low
Integrity:
None
Availability:
Low
Attack Vector:
Local
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/).
.