CVE-2026-17157

Received Received - Intake

Stack 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 remote attacker to execute arbitrary code due to a stack buffer overflow.

CVSS Scores

EPSS Scores

Probability:
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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-2026-17157

EUVD

EUVD-2026-63720

Affected Vendors & Products

Vendor	Product	Version / Range
ibm	aix	7.2
ibm	aix	7.3
ibm	powervm_vios	4.1

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 vulnerability is a stack buffer overflow 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 buffer on the stack.

Impact Analysis

This vulnerability can lead to complete system compromise. An attacker could gain full control over the affected system, allowing them to install malware, steal data, or disrupt operations. It may also enable lateral movement within a network if the system is connected to others.

Compliance Impact

This vulnerability could lead to data breaches, which may violate GDPR and HIPAA requirements for data protection and confidentiality. Organizations using affected systems may face compliance violations, legal penalties, and reputational damage.

Mitigation Strategies

Apply the latest IBM AIX or PowerVM VIOS security patches immediately. Isolate affected systems from untrusted networks. Monitor for unusual network traffic or unauthorized code execution attempts.

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