Heap-Based Buffer Overflow Vulnerability in IBM AIX and PowerVM Products
CVE-2026-17436

8.8HIGH

Key Information:

Vendor

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

What is CVE-2026-17436?

IBM AIX versions 7.2 and 7.3 and IBM PowerVM VIOS version 4.1 are susceptible to a heap-based buffer overflow vulnerability. This issue could potentially be exploited by remote attackers to execute arbitrary code, posing significant risks to the integrity and availability of affected systems.

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:
8.8
Severity:
HIGH
Confidentiality:
High
Integrity:
High
Availability:
High
Attack Vector:
Adjacent 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/).
.