CVE-2025-29876
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 · uneditedA NULL pointer dereference 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 5.5.6.4847 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 confidenceA NULL pointer dereference vulnerability in File Station 5 allows an authenticated remote user to trigger a dereference of an invalid memory pointer, causing the application to crash and result in a denial-of-service condition.
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, < 5.5.6.4847CVSS 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
- None
- User interaction
- None
- Scope
- Unchanged
- Confidentiality
- None
- Integrity
- None
- Availability
- High
CVSS:3.1/AV:N/AC:L/PR:N/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 installedAccess QNAP NAS admin console, go to App Center or QNAP Store, and check if File Station 5 is installed. Alternatively, check via QCLI: run 'qcli -a | grep -i file station' or check the QNAP package manager.Affected if File Station 5 is not installed on the system
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Identify the installed version of File Station 5In QNAP admin console, go to App Center, find File Station 5, and note the version number displayed. Alternatively, check via SSH using: 'qpkg --get-file-name FileStation5' or inspect the package metadata in /share/CACHEDEV1_DATA/.qpkg/FileStation5/ or similar path.Affected if Unable to determine the installed version from the system
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Compare installed version against affected rangeThe affected version range is >= 5.5.6.4691 and < 5.5.6.4847. Compare your installed version number to this range. Note that versions below 5.5.6.4691 are NOT affected, and versions 5.5.6.4847 and later are NOT affected.Affected if Installed version is 5.5.6.4691 or any version up to but not including 5.5.6.4847
The system is affected only if File Station 5 is installed AND the installed version falls within the range 5.5.6.4691 through 5.5.6.4846 inclusive.
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 · scoped5.5.6.4847
Update File Station 5 to version 5.5.6.4847 or later to patch the vulnerability.
File Station 5.5.6.4847 or later
- 1. Identify the QNAP NAS device running File Station
- 2. Check the current File Station version (verify it is >= 5.5.6.4691 and < 5.5.6.4847)
- 3. Access the QNAP Admin Console and navigate to the App Center or File Station settings
- 4. Update File Station to version 5.5.6.4847 or later through QNAP's update mechanism
- 5. Verify the update was successful by checking the File Station version after updating
Generated from the published advisory — verify against the referenced sources before acting.
- Consultation1.0 h
- Implementation1.0 h
- Testing2.0 h
- Review / QA1.0 h
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Free · runs locallyCheck whether your project pulls in CVE-2025-29876 — 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-2025-29876 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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