CVE-2025-22486
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 improper certificate validation vulnerability has been reported to affect File Station 5. If exploited, the vulnerability could allow remote attackers who have gained user access to compromise the security of the system. We have already fixed the vulnerability in the following versions: File Station 5 5.5.6.4791 and later 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 confidenceThis is an improper certificate validation vulnerability in File Station 5 that could allow remote attackers who have obtained user access to compromise system security through flawed TLS/SSL certificate verification, potentially enabling man-in-the-middle attacks or session hijacking.
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, < 5.5.6.4791CVSS 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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Identify File Station 5 installationLocate File Station 5 on the QNAP system. This is typically found in the QNAP App Center or as a running service. Confirm that File Station version 5 (not an earlier version) is installed.Affected if File Station 5 is present on the system
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Determine installed File Station 5 versionCheck the installed version number of File Station 5. This is usually visible in the QNAP App Center under the application details, or can be obtained via QNAP command-line tools if available.Affected if The exact version number cannot be determined or is not visible
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Compare version against vulnerable rangeVerify if the installed version falls within the affected range: version >= 5.5.6.4691 AND version < 5.5.6.4791Affected if Installed version is 5.5.6.4691 or any version up to but not including 5.5.6.4791
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Confirm remote access usageDetermine if File Station 5 remote access features (web interface, file sharing over network) are enabled and accessible. The vulnerability requires an attacker who has obtained user access to exploit the flawed certificate validation.Affected if Remote access is enabled and the system is network-accessible
The system is affected if File Station 5 is installed with a version between 5.5.6.4691 and 5.5.6.4790 inclusive, and remote access features are in use.
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 · scoped5.5.6.4791
Upgrade File Station 5 to version 5.5.6.4791 or later to obtain the certificate validation fix.
File Station 5 version 5.5.6.4791 or later
- Log in to the QNAP NAS admin interface (QTS or QuTS hero)
- Navigate to the App Center or File Station application management
- Check the current installed version of File Station 5
- Locate the File Station update in the available updates
- Update File Station to version 5.5.6.4791 or later
- Verify the update was successful by checking the installed version
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
An estimate, not a bill — we confirm scope with you before any work starts. Need it this week? Rush from $1,984.
Scan for this in your stack
Free · runs locallyCheck whether your project pulls in CVE-2025-22486 — 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-2025-22486 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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