Out-of-Bounds Write Vulnerability in IBM AIX and PowerVM
CVE-2026-17003

7.7HIGH

Key Information:

Vendor

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

What is CVE-2026-17003?

IBM AIX versions 7.2 and 7.3, along with IBM PowerVM VIOS version 4.1, are susceptible to a critical vulnerability that allows an attacker to perform an out-of-bounds write operation. This flaw can potentially lead to unauthorized access and manipulation of sensitive data, jeopardizing both the confidentiality and integrity of the affected systems. Users must ensure they are running patched versions to mitigate the 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:
7.7
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/).
.