CVE-2025-27821

HIGH

7.3

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.

CVE Details

CVSS v3.1 Score7.3

SeverityHIGH

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

Attack VectorNETWORK

ComplexityLOW

Privileges RequiredNONE

User InteractionNONE

Published1/26/2026

Last Modified1/27/2026

Sourcenvd

Honeypot Sightings0

Affected Products

apache:hadoop

Weaknesses (CWE)

CWE-787

References

https://lists.apache.org/thread/kwjhyyx0wl2z9b0mw0styjk0hhdbyplh(security@apache.org)

http://www.openwall.com/lists/oss-security/2026/01/23/7(af854a3a-2127-422b-91ae-364da2661108)

IOC Correlations

No correlations recorded

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