CVE-2025-27821

HIGH

Apache Hadoop 3.2.0-3.4.1 - Out-of-bounds Write in HDFS Native Client

Title source: llm

Description

Out-of-bounds Write vulnerability in Apache Hadoop HDFS native client. This issue affects Apache Hadoop: from 3.2.0 before 3.4.2. Users are recommended to upgrade to version 3.4.2, which fixes the issue.

References (2)

Core 2

Core References

Mailing List, Third Party Advisory

http://www.openwall.com/lists/oss-security/2026/01/23/7

Mailing List, Vendor Advisory vendor-advisory

https://lists.apache.org/thread/kwjhyyx0wl2z9b0mw0styjk0hhdbyplh

Scores

CVSS v3 7.3

EPSS 0.0005

EPSS Percentile 14.5%

Attack Vector NETWORK

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:L

CISA SSVC

Vulnrichment

Exploitation none

Automatable yes

Technical Impact partial

Details

CWE

CWE-787

Status published

Products (2)

apache/hadoop 3.2.0 - 3.4.2

org.apache.hadoop/hadoop-hdfs-native-client 3.2.0 - 3.4.2Maven

Published Jan 26, 2026

Tracked Since Feb 18, 2026