CVE-2026-85656
Received Received - Intake

OS Command Injection in log4j-cve-2021-44228-hotpatch

Publication date: 2026-09-04

Last updated on: 2026-09-04

Assigner: AMZN

Description
An OS command injection issue in the log4j-cve-2021-44228-hotpatch package in Amazon Linux before 1.3-9 might allow a local user to execute arbitrary commands with root privileges via a Java process whose executable path contains embedded newline characters.

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Meta Information

Published
2026-09-04
Last Modified
2026-09-04
Generated
2026-09-05
AI Q&A
2026-09-04
EPSS Evaluated
N/A
NVD
CVE-2026-85656
EUVD
EUVD-2026-71619

Affected Vendors & Products

Showing 1 associated CPE
Vendor Product Version / Range
amazon log4j-cve-2021-44228-hotpatch to 1.3-9 (exc)

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Exploitability

CWE
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KEV
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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

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Executive Summary

This vulnerability is an OS command injection issue in the log4j-cve-2021-44228-hotpatch package for Amazon Linux. It allows a local user to execute arbitrary commands with root privileges by exploiting a Java process with embedded newline characters in its executable path.

Detection Guidance

Check for the presence of the vulnerable log4j-cve-2021-44228-hotpatch package in Amazon Linux before version 1.3-9. Use commands like 'rpm -q log4j-cve-2021-44228-hotpatch' or 'yum list installed log4j-cve-2021-44228-hotpatch' to verify the installed version.

Impact Analysis

If exploited, this vulnerability could allow an attacker with local access to gain full root privileges on the affected system. This could lead to complete system compromise, unauthorized data access, or further network infiltration.

Compliance Impact

This vulnerability allows local users to execute arbitrary commands with root privileges via a Java process with embedded newline characters in the executable path. This could lead to unauthorized access, data breaches, or system compromise, which may violate compliance requirements under GDPR (data protection) and HIPAA (health data security).

Mitigation Strategies

Update the log4j-cve-2021-44228-hotpatch package to version 1.3-9 or later. Remove or disable any Java processes with executable paths containing embedded newline characters to prevent command injection.

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