CVE-2026-18824

Analyzed Analyzed - Analysis Complete

Remote Command Execution in IBM AIX and PowerVM VIOS

Publication date: 2026-08-20

Last updated on: 2026-09-04

Assigner: IBM Corporation

Description

IBM AIX 7.2, and 7.3 and IBM PowerVM VIOS 4.1 could allow a remote authenticated attacker to execute arbitrary commands due to improper neutralization of special elements used in an OS command.

CVSS Scores

EPSS Scores

Probability:
Percentile:

Meta Information

Published

2026-08-20

Last Modified

2026-09-04

Generated

2026-09-10

AI Q&A

2026-08-21

EPSS Evaluated

2026-09-09

NVD

CVE-2026-18824

EUVD

EUVD-2026-63741

Affected Vendors & Products

Vendor	Product	Version / Range
ibm	vios	From 4.1.0 (inc) to 4.1.0.50 (exc)
ibm	vios	From 4.1.1.0 (inc) to 4.1.1.30 (exc)
ibm	vios	From 4.1.2.0 (inc) to 4.1.2.20 (exc)
ibm	aix	From 7.2.5 (inc) to 7.2.5.212 (inc)
ibm	aix	From 7.3.2 (inc) to 7.3.2.5 (inc)
ibm	aix	From 7.3.3 (inc) to 7.3.3.2 (inc)
ibm	aix	From 7.3.4 (inc) to 7.3.4.1 (inc)

Helpful Resources

Exploitability

CWE

KEV

CWE ID	Description
CWE-78	The product constructs all or part of an OS command using externally-influenced input from an upstream component, but it does not neutralize or incorrectly neutralizes special elements that could modify the intended OS command when it is sent to a downstream component.

Attack-Flow Graph

Executive Summary

This vulnerability allows a remote authenticated attacker to execute arbitrary commands on IBM AIX 7.2, 7.3, and IBM PowerVM VIOS 4.1 due to improper neutralization of special elements used in an OS command.

Detection Guidance

This vulnerability involves improper neutralization of special elements in OS commands, allowing remote authenticated attackers to execute arbitrary commands. Detection requires checking for vulnerable IBM AIX 7.2, 7.3, or PowerVM VIOS 4.1 versions and reviewing command execution logs for suspicious activity.

Impact Analysis

An attacker could gain control over the affected systems, leading to unauthorized access, data theft, or disruption of services. This requires the attacker to be authenticated remotely.

Compliance Impact

This vulnerability could lead to unauthorized access or data breaches, which may violate compliance requirements such as GDPR or HIPAA, potentially resulting in legal penalties and reputational damage.

Mitigation Strategies

Apply IBM-provided patches or updates for AIX 7.2, 7.3, and PowerVM VIOS 4.1 to address the improper neutralization issue. Restrict remote access to authenticated users only and monitor for unusual command execution patterns.

Hi! I’m here to help you understand CVE-2026-18824. Ask me anything about the vulnerability, its impact, or mitigation strategies.

0/70