CVE-2025-62854
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 uncontrolled resource consumption vulnerability has been reported to affect File Station 5. If a remote attacker gains a user account, they can then exploit the vulnerability to launch a denial-of-service (DoS) attack. We have already fixed the vulnerability in the following version: File Station 5 5.5.6.5190 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 · high confidenceAn uncontrolled resource consumption vulnerability in File Station 5 allows an authenticated remote attacker with a valid user account to consume excessive resources and cause a denial-of-service condition. The vulnerability has been patched in version 5.5.6.5190 and later.
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>= 5.5.6.4691, < 5.5.6.5190CVSS 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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Verify File Station 5 is installedLocate File Station 5 application in the QNAP NAS interface or check installed packagesAffected if File Station 5 is present on the system
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Determine the installed version of File Station 5Access the File Station application settings or QNAP App Center to view the current version numberAffected if version cannot be determined or is within the affected range
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Compare version against affected rangeCheck if the installed version is >= 5.5.6.4691 AND < 5.5.6.5190Affected if installed version falls within >= 5.5.6.4691 and < 5.5.6.5190
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Verify if user authentication is enabledConfirm that user accounts exist and File Station authentication is activeAffected if authenticated users can access File Station
The system is affected if File Station 5 is installed with a version between 5.5.6.4691 and 5.5.6.5190 inclusive, and valid user accounts can authenticate to the application.
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 · scoped5.5.6.5190
Upgrade File Station 5 to version 5.5.6.5190 or later. As a defense-in-depth measure, enforce strong password policies and monitor for anomalous authenticated session behavior that may indicate exploitation attempts.
File Station 5 version 5.5.6.5190 or later
- Log into the QNAP NAS admin interface
- Navigate to File Station application
- Check the current version under Settings or About
- If the installed version is >= 5.5.6.4691 and < 5.5.6.5190, update File Station to the latest available version
- Ensure the update completes successfully and restart File Station if prompted
- Verify the installed version is 5.5.6.5190 or later
Generated from the published advisory — verify against the referenced sources before acting.
- Consultation2.0 h
- Implementation2.0 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-2025-62854 — 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-2025-62854 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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