Remote Code Execution Vulnerability in IBM AIX and PowerVM
CVE-2026-17138

8.1HIGH

Key Information:

Vendor

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

What is CVE-2026-17138?

A vulnerability in IBM AIX versions 7.2 and 7.3, as well as IBM PowerVM VIOS version 4.1, could enable a remote attacker to exploit a stack-based buffer overflow. This flaw allows unauthorized access to execute arbitrary code on the affected systems, potentially compromising the security of data and network integrity. Users are advised to apply patches immediately 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:
8.1
Severity:
HIGH
Confidentiality:
High
Integrity:
High
Availability:
High
Attack Vector:
Network
Attack Complexity:
High
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/).
.