CVE-2025-27821

HIGH
2026-01-26 [email protected] GHSA-92cc-952p-v8rh
7.3
CVSS 3.1
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CVSS Vector

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:L
Attack Vector
Network
Attack Complexity
Low
Privileges Required
None
User Interaction
None
Scope
Unchanged
Confidentiality
Low
Integrity
Low
Availability
Low

Lifecycle Timeline

3
Patch Released
Mar 31, 2026 - 21:13 nvd
Patch available
Analysis Generated
Mar 12, 2026 - 22:00 vuln.today
CVE Published
Jan 26, 2026 - 10:16 nvd
HIGH 7.3

Tags

Apache Hadoop

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.

Analysis

Out-of-bounds Write vulnerability in Apache Hadoop HDFS native client. This issue affects Apache Hadoop: from 3.2.0 before 3.4.2. [CVSS 7.3 HIGH]

Technical Context

Classified as CWE-787 (Out-of-bounds Write). Affects Hadoop. 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 Products

Vendor: Apache. Product: Hadoop. Versions: up to 3.4.2..

Remediation

Update to version 3.4.2 or later. Enable ASLR, DEP/NX, and stack canaries where possible. Restrict network access to the affected service where possible.

Priority Score

37
Low Medium High Critical
KEV: 0
EPSS: +0.1
CVSS: +36
POC: 0

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CVE-2025-27821 vulnerability details – vuln.today
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