CVE-2025-27821

CWE-787 — Out-of-bounds Write6 documents6 sources
Severity
7.3HIGH
EPSS
0.0%
top 85.66%
CISA KEV
Not in KEV
Exploit
No known exploits
Affected products
2
Apache Software Foundation Hdfs Native ClientApache Hadoop
Timeline
PublishedJan 26

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.

CVSS vector

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:LExploitability: 3.9 | Impact: 3.4

Affected Packages3 packages

▶NVDapache/hadoop3.2.0 — 3.4.2

🔴Vulnerability Details

3
GHSA
Apache Hadoop HDFS Native Client has Out-of-bounds Write Vulnerability↗2026-01-26
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OSV
Apache Hadoop HDFS Native Client has Out-of-bounds Write Vulnerability↗2026-01-26
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CVEList
HDFS native client: Out of bounds write in URI parser of native HDFS client↗2026-01-26
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📋Vendor Advisories

1
Apache
Apache hadoop: CVE-2025-27821↗
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🕵️Threat Intelligence

1
Wiz
CVE-2025-27821 Impact, Exploitability, and Mitigation Steps | Wiz↗
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