---
id: CVE-2025-29897
title: >-
  A buffer copy without checking size of input vulnerability has been reported
  to affect Qsync Central
summary: >-
  A buffer copy without checking size of input vulnerability has been reported
  to affect Qsync Central. If a remote attacker gains a user account, they can
  then exploit the vulnerability to modify memory or crash processes.


  We have alread…
severity: low
cvss: 2.3
cvssVector: 'CVSS:4.0/AV:N/AC:L/AT:P/PR:L/UI:N/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N'
cwe:
  - CWE-120
  - CWE-121
vendor: QNAP Systems Inc.
product: Qsync Central
affected:
  - qsync_central >= 5.0.x < 5.0.0.4
published: '2026-10-15'
updated: '2026-10-15'
sourceUpdated: '2026-10-15T08:16:35.577'
source: NVD
sourceUrl: 'https://nvd.nist.gov/vuln/detail/CVE-2025-29897'
references:
  - url: >-
      https://www.qnap.com/en/app-release-notes?keyword=Qsync%20&app=QsyncServer&product-line=nas
    label: security@qnapsecurity.com.tw
tags:
  - nvd
  - cve.org
cvssSource: cna
ingestedAt: '2026-10-15T07:57:27.839Z'
---

## Overview

A buffer copy without checking size of input vulnerability has been reported to affect Qsync Central. If a remote attacker gains a user account, they can then exploit the vulnerability to modify memory or crash processes.

We have already fixed the vulnerability in the following version:
Qsync Central 5.0.0.4 and later

## Remediation

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