Out-of-bounds Write Vulnerability in Apache Hadoop HDFS Native Client

CVE-2025-27821

What is CVE-2025-27821?

An out-of-bounds write vulnerability has been identified in the native client of Apache Hadoop HDFS. This flaw allows attackers to manipulate or corrupt data beyond the intended memory boundaries, potentially leading to unexpected behavior or system instability. The issue affects Apache Hadoop versions beginning from 3.2.0 up to, but not including, 3.4.2. Users are strongly encouraged to upgrade to version 3.4.2 to mitigate this security risk and ensure the integrity and reliability of their data processing environments.

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