CVE-2026-16936

Received Received - Intake

Buffer Overflow in IBM AIX and PowerVM VIOS

Publication date: 2026-08-20

Last updated on: 2026-08-20

Assigner: IBM Corporation

Description

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

CVSS Scores

EPSS Scores

Probability:
Percentile:

Meta Information

Published

2026-08-20

Last Modified

2026-08-20

Generated

2026-08-21

AI Q&A

2026-08-21

EPSS Evaluated

N/A

NVD

CVE-2026-16936

EUVD

EUVD-2026-63672

Affected Vendors & Products

Vendor	Product	Version / Range
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 buffer overflow vulnerability in IBM AIX 7.2, 7.3, and IBM PowerVM VIOS 4.1. A local attacker could exploit it to execute arbitrary code by sending specially crafted input that exceeds the buffer's capacity.

Detection Guidance

This vulnerability involves a buffer overflow in IBM AIX 7.2, 7.3, and PowerVM VIOS 4.1. Detection requires checking system versions and applying IBM's official patches or updates. No specific commands are provided in the context to directly detect this issue.

Impact Analysis

A successful exploit could allow an attacker to gain control of the affected system, potentially leading to unauthorized access, data theft, or system disruption. Since it requires local access, physical or remote login access is needed.

Compliance Impact

This vulnerability could lead to unauthorized access or data breaches, which may violate compliance requirements under GDPR, HIPAA, or other regulations. Organizations must address it to maintain data protection and security standards.

Mitigation Strategies

Apply IBM-provided patches or updates for AIX 7.2, 7.3, and PowerVM VIOS 4.1 to address the buffer overflow vulnerability.

Hi! I’m here to help you understand CVE-2026-16936. Ask me anything about the vulnerability, its impact, or mitigation strategies.

0/70