CVE-2025-57708
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 allocation of resources without limits or throttling vulnerability has been reported to affect Qsync Central. If a remote attacker gains a user account, they can then exploit the vulnerability to prevent other systems, applications, or processes from accessing the same type of resource. We have already fixed the vulnerability in the following version: Qsync Central 5.0.0.4 ( 2026/01/20 ) 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 confidenceQsync Central contains an allocation of resources without limits or throttling vulnerability. A remote attacker who has obtained valid user credentials can exploit this to exhaust resources (likely connections, file handles, or sync sessions) and prevent other systems, applications, or processes from accessing the same type of resource, causing denial of service conditions.
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, < 5.0.0.4CVSS 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
- None
- Integrity
- None
- Availability
- High
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/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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Confirm Qsync Central is installedLocate Qsync Central on the QNAP system through the management interface or by checking installed applicationsAffected if Qsync Central is not found on the system, the vulnerability does not apply
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Identify the installed version of Qsync CentralAccess the QNAP admin interface, navigate to Qsync Central settings, or use the QNAP command line tools to retrieve the software versionAffected if Unable to determine the version - manual verification may be required
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Compare the installed version against the affected rangeCheck if the installed version falls within >= 5.0.0.0 and < 5.0.0.4Affected if The installed version is 5.0.0.0, 5.0.0.1, 5.0.0.2, or 5.0.0.3 - these versions are affected by the vulnerability
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Verify remote access configurationReview whether Qsync Central is exposed to remote network access, as the exploit requires remote attacker accessAffected if Qsync Central is accessible from untrusted networks and user credentials could be obtained by an attacker
The system is affected if Qsync Central is installed and the running version is between 5.0.0.0 and 5.0.0.3 inclusive, and the application is accessible to remote attackers who could obtain valid credentials.
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 · scoped5.0.0.4
Upgrade Qsync Central to version 5.0.0.4 or later. Until then, limit user account exposure and monitor for abnormal resource consumption patterns.
Qsync Central 5.0.0.4
- Verify current Qsync Central version by checking the QNAP admin console
- Backup current Qsync Central configuration and data
- Access QNAP App Center or use the QNAP firmware update mechanism
- Update Qsync Central to version 5.0.0.4 or later
- Verify the update was successful and the new version is running
- Confirm the Qsync Central service is functioning normally
Generated from the published advisory — verify against the referenced sources before acting.
- Consultation2.0 h
- Implementation4.0 h
- Testing3.0 h
- Review / QA2.0 h
An estimate, not a bill — we confirm scope with you before any work starts. Need it this week? Rush from $3,088.
Scan for this in your stack
Free · runs locallyCheck whether your project pulls in CVE-2025-57708 — 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-2025-57708 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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A place for practitioners to share what actually worked: a mitigation you’ve tested, a configuration change, a version- or environment-specific caveat, or a link to a verified patch. The most useful notes rise to the top as peers upvote them, so the signal stays high.
- 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
- No spam, self-promotion, credentials, or personal data