CVE-2016-5393

What it is

In Apache Hadoop 2.6.x before 2.6.5 and 2.7.x before 2.7.3, a remote user who can authenticate with the HDFS NameNode can possibly run arbitrary commands with the same privileges as the HDFS service.

At a glance

Exploitability

Can be exploited over the network with a low-privilege account. High risk of data exposure, data tampering, service disruption.

Exploit odds

3.1% chance of exploitation in the next 30 days (EPSS).

Fix

A patch, advisory or fixed version is referenced. Upgrade or apply it.

Timeline

1. 2016-11-29 06:59 UTC PublishedDisclosed publicly on CVE.org and NVD
2. 2026-06-17 00:49 UTC Last updatedMost recent change to the record

Why it ranks here

• Exploited in the wild: no, CISA does not list it.
• Exploit odds: 3.1% in the next 30 days (EPSS).
• Severity: 8.8 HIGH (CVSS).
• Fix: a patch or advisory is linked.

Details

Published

2016-11-29 06:59 UTC

Last modified

2026-06-17 00:49 UTC

Exploit probability

3.1% · EPSS, next 30 days

Weakness

CWE-284 · Improper access control

Record status

Modified

Affected

• Apache Hadoop 2.7.0
• Apache Hadoop 2.7.1
• Apache Hadoop 2.7.2
• Apache Hadoop 2.6.0
• Apache Hadoop 2.6.1
• Apache Hadoop 2.6.2
• Apache Hadoop 2.6.3
• Apache Hadoop 2.6.4

Attack profile CVSS 3.0 · 8.8

Attack vector

Network

Complexity

Low

Privileges needed

Low

User interaction

None

Scope

Unchanged

Confidentiality

High

Integrity

High

Availability

High

Is it in your code?

Hand this to your coding agent. It searches your project for the affected products and checks versions. Nothing leaves your machine.

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