#VU122008 Out-of-bounds write in Hadoop - CVE-2025-27821
Published: January 24, 2026
Vulnerability identifier: #VU122008
Vulnerability risk: Low
CVSSv4.0: CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N/E:U/U:Clear
CVE-ID: CVE-2025-27821
CWE-ID: CWE-787
Exploitation vector: Local access
Exploit availability:
No public exploit available
Vulnerable software:
Hadoop
Hadoop
Software vendor:
Apache Foundation
Apache Foundation
Description
The vulnerability allows a local user to crash the application.
The vulnerability exists due to a boundary error in the URI parser within the HDFS native client. A local user can pass a specially crafted URI to the application and perform a denial of service attack.
Remediation
Install updates from vendor's website.