CVE-2025-27821

Published: Jan 26, 2026Modified: Jan 27, 2026

7.3

Vector

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

Exploitability: 3.9 / Impact: 3.4

Source: 134c704f-9b21-4f2e-91b3-4a467353bcc0 (Secondary)

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.

Affected (1)

Products: Apache: Hadoop

Apache

1 product

Hadoop

Configuration A

1 vulnerable

Vulnerable Software	Affected Versions
Apache Hadoop	From 3.2.0 to 3.4.2

Related CWEs

CWE-787

Out-of-bounds Write

The product writes data past the end, or before the beginning, of the intended buffer.

References (2)

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

Source: security@apache.org

Mailing ListVendor Advisory

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

Source: af854a3a-2127-422b-91ae-364da2661108

Mailing ListThird Party Advisory

Timeline

No history available yet.