---
id: CVE-2026-16951
title: >-
  IBM AIX 7.2, and 7.3 and IBM PowerVM VIOS 4.1 could allow a local
  authenticated attacker to execute arbitrary code due to a heap-based buffer
  overflow.
summary: >-
  IBM AIX 7.2, and 7.3 and IBM PowerVM VIOS 4.1 could allow a local
  authenticated attacker to execute arbitrary code due to a heap-based buffer
  overflow.
severity: medium
cvss: 6.7
cvssVector: 'CVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H'
cwe:
  - CWE-787
published: '2026-08-20'
updated: '2026-08-22'
source: NVD
sourceUrl: 'https://nvd.nist.gov/vuln/detail/CVE-2026-16951'
references:
  - url: 'https://www.ibm.com/support/pages/node/7283858'
    label: psirt@us.ibm.com
tags:
  - nvd
epss: 0.00129
epssPercentile: 0.02914
ingestedAt: '2026-08-23T03:41:35.946Z'
---

## Overview

IBM AIX 7.2, and 7.3 and IBM PowerVM VIOS 4.1 could allow a local authenticated attacker to execute arbitrary code due to a heap-based buffer overflow.

## Remediation

Refer to the linked advisories for vendor-supplied fixes and affected version ranges.