CVE-2025-27821

HIGH EPSS 54.0%
Published Jan 26, 20265mo ago · Modified Jun 17, 20262w ago
7.3 CVSS 3.1
High
Find Similar
Published Jan 26, 2026 5mo ago
Last Modified Jun 17, 2026 2w ago

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 Details

Base Score
7.3
Exploitability
3.9
Impact
3.4
Vector string
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

Threat Intelligence

EPSS Exploit Probability
54.0% percentile
Exploit & Patch Status
No Known Exploit
No Patch Available

Weaknesses 1

CWE-787 Out-of-bounds Write Memory Safety

Affected Products 1

VendorProductVersionRange
apachehadoop*≥3.2.0  –  <3.4.2

References 2

  • openwall.com http://www.openwall.com/lists/oss-security/2026/01/23/7
    Mailing ListThird Party Advisory
  • lists.apache.org https://lists.apache.org/thread/kwjhyyx0wl2z9b0mw0styjk0hhdbyplh
    Mailing ListVendor Advisory

Remediation

No remediation data recorded yet

Check vendor advisories and the NVD entry for patch availability.