CVE-2025-53595
Official description Straight from the sourceThe vendor's or NVD's own wording, published unedited. Authoritative, but often terse — it says what broke, rarely what to do.
NVD · uneditedAn SQL injection vulnerability has been reported to affect Qsync Central. If a remote attacker gains a user account, they can then exploit the vulnerability to execute unauthorized code or commands. We have already fixed the vulnerability in the following version: Qsync Central 5.0.0.2 ( 2025/07/31 ) and later
Technical summary Written by usOur analysis, written from the advisory, the CVSS vector and the affected-version data. It adds context the advisory leaves out, and never invents facts that are not in the source.
dbcve analysis · moderate confidenceSQL injection vulnerability in Qsync Central allows authenticated remote attackers to execute unauthorized code or commands. The attack requires the attacker to first obtain a valid user account, then inject malicious SQL queries to achieve command execution.
Verify against the referenced sources before acting — the references below are authoritative for this CVE, this summary is not.
Affected products & versions What the vendor confirmedThe version ranges the vendor confirmed as vulnerable. If your version sits inside a range here, treat yourself as exposed until you have upgraded.
NVD · CPE data>= 5.0.0.0, < 5.0.0.2CVSS breakdown How the score is builtThe industry scoring standard. It rates how the flaw is reached, what it takes to exploit, and what an attacker gains — the score is derived from those, not the other way round.
From the vector- Attack vector
- Network
- Complexity
- Low
- Privileges
- Low
- User interaction
- None
- Scope
- Unchanged
- Confidentiality
- High
- Integrity
- High
- Availability
- High
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
Am I affected? How to checkSteps we derive from the advisory and the affected-version data, so you can decide whether this CVE reaches your setup. They are a guide, not a scan — your own configuration is the authority.
dbcve checksWork through these to decide whether this CVE applies to you.
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Locate Qsync Central versionOpen QNAP admin interface, navigate to App Center or the Qsync Central application, and view the installed version information typically displayed in the app details or about sectionAffected if The displayed version is 5.0.0.0 or 5.0.0.1 (falls within >= 5.0.0.0 and < 5.0.0.2)
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Confirm Qsync Central is runningVerify the Qsync Central service is actively running on the QNAP NAS device through the QNAP admin interface under Application Management or via command line if SSH access is availableAffected if The service is running and the version from step 1 is in the affected range
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Identify valid user accountsReview the list of user accounts that have access to Qsync Central through the QNAP admin interface under Users or QuMan (Quota Manager) settingsAffected if Any valid user accounts exist (the vulnerability requires an attacker to obtain a valid user account first)
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Audit application logs for SQL injection indicatorsAccess Qsync Central logs through the QNAP admin interface or locate log files in the QNAP filesystem (typically under /share/Qsync or similar paths) and search for unusual SQL syntax, unexpected database queries, or patterns like UNION SELECT, DROP TABLE, or other SQL keywords that do not correspond to normal operationsAffected if Suspicious SQL patterns are found in logs indicating injection attempts
Your environment is affected if Qsync Central version is 5.0.0.0 or 5.0.0.1 and the application is running with valid user accounts present.
Generated from the published advisory. Verify against your own configuration.
Remediation Closing itWhat it takes to close this. Where a vendor fix exists we point at it; where none exists we say so plainly, and can build one. Effort estimates are scoped from the advisory, not from your codebase.
dbcve · scoped5.0.0.2
Upgrade to Qsync Central version 5.0.0.2 or later. Until patched, restrict user account creation and monitor for suspicious SQL patterns in application logs.
Qsync Central 5.0.0.2 or later
- 1. Log in to the QNAP NAS administration interface.
- 2. Navigate to App Center or the Qsync Central application settings.
- 3. Check the current installed version of Qsync Central.
- 4. If the version is below 5.0.0.2, download Qsync Central version 5.0.0.2 or later from the official QNAP website (www.qnap.com).
- 5. Install or update Qsync Central to version 5.0.0.2 or later.
- 6. Verify the update was successful by checking the installed version number.
Generated from the published advisory — verify against the referenced sources before acting.
- Consultation2.0 h
- Implementation4.0 h
- Testing2.0 h
- Review / QA1.0 h
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Scan for this in your stack
Free · runs locallyCheck whether your project pulls in CVE-2025-53595 — or any other known-vulnerable package — straight from your lock files. Free and open source; it runs locally and uploads nothing.
References Go to the primary sourcePrimary sources — vendor advisories, patches and trackers. Where our summary and a reference disagree, the reference wins.
Primary sourcesPractitioner notes
ContributedPeer-ranked notes from engineers who’ve handled CVE-2025-53595 in production — separate from our analysis above.
The advisory tells you what broke. It rarely tells you what actually worked. If you’ve dealt with this one, that detail is what the next engineer is searching for.
- The version that genuinely resolved it — not the one the vendor claimed
- A config change or rule that shut the vector down
- A gotcha in the upgrade path that cost you an afternoon
No notes yet
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- Verified mitigations, workarounds, and config changes
- Version or environment caveats, and links to real fixes
- No weaponised exploit code, or anything meant to cause harm
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