CVE-2026-16926
Received Received - Intake

File Overwrite Vulnerability 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 overwrite arbitrary files due to improper neutralization of special elements in input.

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Meta Information

Published
2026-08-20
Last Modified
2026-08-20
Generated
2026-08-20
AI Q&A
2026-08-20
EPSS Evaluated
N/A
NVD
CVE-2026-16926
EUVD
EUVD-2026-63386

Affected Vendors & Products

Showing 3 associated CPEs
Vendor Product Version / Range
ibm aix 7.2
ibm aix 7.3
ibm powervm_vios 4.1

Helpful Resources

Exploitability

CWE
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KEV
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CWE ID Description
CWE-73 The product allows user input to control or influence paths or file names that are used in filesystem operations.

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Executive Summary

This vulnerability in IBM AIX 7.2, 7.3, and IBM PowerVM VIOS 4.1 allows a remote attacker to overwrite arbitrary files due to improper input neutralization. This means an attacker could send specially crafted input to manipulate or replace files on the system without proper validation.

Detection Guidance

This vulnerability involves improper input handling in IBM AIX and PowerVM VIOS, allowing remote attackers to overwrite files. Detection requires checking for unauthorized file modifications or suspicious network activity targeting these systems. No specific commands are provided in the context.

Impact Analysis

This vulnerability could allow attackers to overwrite critical system files, leading to system instability, unauthorized access, or complete system compromise. It may result in data loss, unauthorized modifications, or denial of service if exploited.

Compliance Impact

This vulnerability could lead to non-compliance with GDPR, HIPAA, or other regulations by enabling unauthorized file access or modification. It may result in data breaches, loss of data integrity, or failure to protect sensitive information, triggering regulatory penalties.

Mitigation Strategies

Apply IBM-provided patches or updates for AIX 7.2, 7.3, and PowerVM VIOS 4.1 to address the improper input neutralization issue. Monitor IBM security advisories for specific fixes and follow their recommended mitigation steps.

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