CVE-2025-27821 — HDFS native client: Out of bounds write in URI parser of native HDFS client

CVE-2025-27821

HDFS native client: Out of bounds write in URI parser of native HDFS client PUBLISHED

Description (CNA)

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.

Affected (CNA)

Vendor / product	Versions
Apache Software Foundation / HDFS native client	affected 3.2.0 before 3.4.2

CWE

CWE-787

References

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

ADP enrichment

CVE

No English description supplied.

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

CISA-ADP

No English description supplied.

No references supplied.