---
id: CVE-2025-61871
title: NAS Navigator2 Windows version by BUFFALO INC
summary: >-
  NAS Navigator2 Windows version by BUFFALO INC. registers a Windows service
  with an unquoted file path. A user with the write permission on the root
  directory of the system drive may execute arbitrary code with SYSTEM
  privilege.
severity: medium
cvss: 6.7
cvssVector: 'CVSS:3.0/AV:L/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H'
cwe:
  - CWE-428
published: '2025-10-10'
updated: '2026-10-08'
sourceUpdated: '2026-10-08T13:10:00.200'
source: NVD
sourceUrl: 'https://nvd.nist.gov/vuln/detail/CVE-2025-61871'
references:
  - url: 'https://jvn.jp/en/jp/JVN69099112/'
    label: vultures@jpcert.or.jp
  - url: 'https://www.buffalo.jp/news/detail/20251009-01.html'
    label: vultures@jpcert.or.jp
tags:
  - nvd
epss: 0.00168
epssPercentile: 0.05545
ingestedAt: '2026-10-08T13:42:55.067Z'
---

## Overview

NAS Navigator2 Windows version by BUFFALO INC. registers a Windows service with an unquoted file path. A user with the write permission on the root directory of the system drive may execute arbitrary code with SYSTEM privilege.

## Remediation

Refer to the linked advisories for vendor-supplied fixes and affected version ranges.