CVE-2026-81349

Analyzed Analyzed - Analysis Complete

Azure HDInsights OS Command Injection Vulnerability

Publication date: 2026-09-08

Last updated on: 2026-09-23

Assigner: Microsoft Corporation

Description

Improper neutralization of special elements used in an os command ('os command injection') in Azure HDInsights allows an authorized attacker to elevate privileges over a network.

CVSS Scores

EPSS Scores

Probability:
Percentile:

Meta Information

Published

2026-09-08

Last Modified

2026-09-23

Generated

2026-09-30

AI Q&A

2026-09-09

EPSS Evaluated

2026-09-27

NVD

CVE-2026-81349

Affected Vendors & Products

Vendor	Product	Version / Range
microsoft	azure_hdinsight	to 5.1 (exc)

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 is an OS command injection vulnerability in Azure HDInsights where improper neutralization of special elements allows an authorized attacker to execute arbitrary commands over a network and elevate their privileges.

Impact Analysis

An attacker could gain higher-level access to your Azure HDInsights environment, potentially allowing them to take control of systems, access sensitive data, or disrupt operations.

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 or reputational damage.

Mitigation Strategies

Apply the latest security updates from Microsoft for Azure HDInsights as soon as possible to patch the OS command injection vulnerability. Monitor network traffic for unusual privilege escalation attempts and restrict unauthorized access to Azure HDInsights services.

Hi! I’m here to help you understand CVE-2026-81349. Ask me anything about the vulnerability, its impact, or mitigation strategies.

0/70