CVE-2025-27821

high

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

Advisories

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

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

Details

Source: Mitre, NVD

Published: 2026-01-26

Updated: 2026-01-27

Risk Information

CVSS v2

Base Score: 7.5

Vector: CVSS2#AV:N/AC:L/Au:N/C:P/I:P/A:P

Severity: High

CVSS v3

Base Score: 7.3

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