CVE-2025-29886
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 5.5.6.4907 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 confidenceA NULL pointer dereference vulnerability in QNAP File Station 5 allows authenticated remote attackers to cause a denial-of-service condition by triggering the application to dereference a NULL pointer, resulting in a crash.
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, < 5.5.6.4907CVSS 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.
-
Confirm QNAP File Station is installedAccess your QNAP NAS admin console and navigate to the application list or App Center to verify File Station 5 is installed.Affected if File Station 5 is not present on the system, the CVE does not apply.
-
Locate the File Station versionIn the QNAP admin interface, open File Station and access its settings or about section to view the installed version number.Affected if Unable to retrieve a version number from File Station, the CVE cannot be assessed.
-
Compare version against affected rangeTake the installed File Station version (for example, 5.5.6.xxxx) and compare it to the affected range: greater than or equal to 5.5.6.4691 and less than 5.5.6.4907.Affected if The installed version falls within >= 5.5.6.4691 and < 5.5.6.4907, indicating the environment is vulnerable.
-
Verify authentication exposureReview user accounts with access to File Station and check for any unusual or unauthorized authentication activity in the system logs.Affected if The system allows remote authentication to File Station, making it potentially exploitable.
A user is affected if QNAP File Station 5 is installed with a version between 5.5.6.4691 and 5.5.6.4906 inclusive, and the application is accessible to authenticated users.
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 · scoped5.5.6.4907
Update File Station to version 5.5.6.4907 or later to remediate this vulnerability. Organizations should ensure user accounts are properly secured and monitor for unusual authentication patterns.
File Station 5 version 5.5.6.4907 or later
- Log in to the QNAP NAS administration interface (QTS)
- Navigate to App Center
- Search for File Station
- If an update is available, click Update to install version 5.5.6.4907 or later
- Alternatively, navigate to File Station settings and check for updates within the application
- Verify the installed version is 5.5.6.4907 or higher after the update completes
Generated from the published advisory — verify against the referenced sources before acting.
- Consultation1.0 h
- Implementation2.0 h
- Testing2.0 h
- Review / QA1.0 h
An estimate, not a bill — we confirm scope with you before any work starts. Need it this week? Rush from $1,664.
Scan for this in your stack
Free · runs locallyCheck whether your project pulls in CVE-2025-29886 — 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-2025-29886 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
Be the first to add a field note for this CVE — a mitigation you’ve verified, a version caveat, or a link to a working fix. Sign in above to contribute.
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