CVE-2026-16894

Received Received - Intake

Stack Buffer Overflow in IBM AIX and PowerVM VIOS

Publication date: 2026-08-19

Last updated on: 2026-08-19

Assigner: IBM Corporation

Description

IBM AIX 7.2, and 7.3 and IBM PowerVM VIOS 4.1 could allow a remote attacker to execute arbitrary code due to a stack buffer overflow.

CVSS Scores

EPSS Scores

Probability:
Percentile:

Meta Information

Published

2026-08-19

Last Modified

2026-08-19

Generated

2026-08-20

AI Q&A

2026-08-20

EPSS Evaluated

N/A

NVD

CVE-2026-16894

EUVD

EUVD-2026-62826

Affected Vendors & Products

Vendor	Product	Version / Range
ibm	aix	7.2
ibm	aix	7.3
ibm	powervm_vios	4.1
ibm	aix	From 7.2 (inc)
ibm	aix	From 7.3 (inc)
ibm	powervm_vios	From 4.1 (inc)

Helpful Resources

Exploitability

CWE

KEV

CWE ID	Description
CWE-787	The product writes data past the end, or before the beginning, of the intended buffer.

Attack-Flow Graph

Executive Summary

This is a stack buffer overflow vulnerability in IBM AIX 7.2, 7.3, and IBM PowerVM VIOS 4.1. It allows a remote attacker to execute arbitrary code by sending specially crafted input that overflows a stack buffer.

Impact Analysis

An attacker could exploit this to run malicious code on your system, potentially taking control of it, stealing data, or disrupting services. Systems exposed to network traffic are most at risk.

Compliance Impact

This vulnerability could lead to unauthorized access or data breaches, violating GDPR (data protection) and HIPAA (health data privacy) requirements. Organizations must patch systems to maintain compliance.

Mitigation Strategies

Apply IBM-provided patches or updates for AIX 7.2, 7.3, and PowerVM VIOS 4.1 immediately. Isolate affected systems from untrusted networks until patched. Monitor IBM security advisories for updates and follow their recommended mitigation steps.

Hi! I’m here to help you understand CVE-2026-16894. Ask me anything about the vulnerability, its impact, or mitigation strategies.

0/70