CVE-2025-53595Network attack vector

Authenticated code execution via undisclosed SQL injection

Published Oct 3, 2025 · Updated Oct 3, 2025

SQL injection in QNAP Qsync Central 5.0.0 before 5.0.0.2 allows remote authenticated users to execute unauthorized code or commands. QNAP has not published the affected endpoint, parameter, query construction, or operation that passes attacker-controlled data into SQL. A valid user account is required, and the disclosed consequence is unauthorized code or command execution rather than a documented service interruption.

CVSS severity8.8
High
EPSS probability0.42%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

SQL injection in QNAP Qsync Central 5.0.0 before 5.0.0.2 allows remote authenticated users to execute unauthorized code or commands. QNAP has not published the affected endpoint, parameter, query construction, or operation that passes attacker-controlled data into SQL. A valid user account is required, and the disclosed consequence is unauthorized code or command execution rather than a documented service interruption.

The record

CVE
CVE-2025-53595
Published
Oct 3, 2025
Updated
Oct 3, 2025
Vendor
Linn Products Limited
Product
Qsync Central
Classifications
CWE-89
Attack vector
network
Privileges
authenticated

Timeline

How it unfolded

  1. Oct 3, 2025CVE publishedPublication date reported by the CVE source.
  2. Oct 3, 2025Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

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Is a vulnerable build present?

Compare these published version ranges with your installed build and any vendor patches.

  1. Affected versionversion=5.0.0 <5.0.0.2 ( 2025/07/31 )

What conditions does exploitation require?

Attack vectornetwork
Required privilegesauthenticated

What is affected?

Linn Products Limited · Qsync Centralversion=5.0.0 <5.0.0.2 ( 2025/07/31 )

Published CVSS scores

8.8NIST National Vulnerability DatabaseCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
8.6QNAP Systems, Inc.CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:H/VI:H/VA:N/SC:N/SI:N/SA:N

CVSS describes severity. EPSS estimates exploitation probability.

Attacks

What attackers are doing with it

Daily unique IPs observed by Shadowserver honeypots for known exploited vulnerabilities (KEVs). Missing observations do not establish an absence of attacks.

Daily unique IPsNo honeypot observations are available for this CVE in the selected window.

No observations available

Sep 9, 2026Sep 15, 2026
Latest reporting daySep 15, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectornetwork
Privilegesauthenticated
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-89Improper Neutralization of Special Elements used in an SQL Command ('SQL Injection')

Public exploit references

No public exploit references are available in this record.

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Technologies

Your stack

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Your stack

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