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CVE-2025-27821: Apache Hadoop HDFS Native Client has Out-of-bounds Write Vulnerability

January 26, 2026

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

  • github.com/advisories/GHSA-92cc-952p-v8rh
  • github.com/apache/hadoop
  • github.com/apache/hadoop/commit/2b32e46f666c7645f5d1e026be3982b99319ccb8
  • github.com/apache/hadoop/pull/7481
  • issues.apache.org/jira/browse/HDFS-17754
  • lists.apache.org/thread/kwjhyyx0wl2z9b0mw0styjk0hhdbyplh
  • nvd.nist.gov/vuln/detail/CVE-2025-27821

Code Behaviors & Features

Detect and mitigate CVE-2025-27821 with GitLab Dependency Scanning

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Affected versions

All versions starting from 3.2.0 before 3.4.2

Fixed versions

  • 3.4.2

Solution

Upgrade to version 3.4.2 or above.

Impact 7.3 HIGH

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

Learn more about CVSS

Weakness

  • CWE-787: Out-of-bounds Write

Source file

maven/org.apache.hadoop/hadoop-hdfs-native-client/CVE-2025-27821.yml

Spotted a mistake? Edit the file on GitLab.

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