CVE-2017-7638
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 · uneditedQNAP NAS application Media Streaming add-on version 421.1.0.2, 430.1.2.0, and earlier does not authenticate requests properly. Successful exploitation could lead to change of the Media Streaming settings, and leakage of sensitive information of the QNAP NAS.
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 confidenceThe QNAP NAS Media Streaming add-on versions 421.1.0.2, 430.1.2.0, and earlier fails to properly authenticate incoming HTTP requests, allowing remote attackers to modify Media Streaming settings and access sensitive system information without any authentication credentials.
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<= 430.1.2.0<= 421.1.0.2CVSS 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
- Low
- Integrity
- Low
- Availability
- None
CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:N
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.
-
Verify Media Streaming add-on is installedAccess QNAP NAS Admin Panel (http://[NAS-IP]:8080 or https://[NAS-IP]:8081), navigate to App Center or QTS Desktop, locate Media Streaming in installed applicationsAffected if Media Streaming add-on appears in the list of installed applications
-
Check Media Streaming add-on versionIn QNAP Admin Panel, find Media Streaming in App Center, click on the application to view version details; compare against affected versions 421.1.0.2 and 430.1.2.0Affected if Installed version is 421.1.0.2 or earlier, OR version 430.1.2.0 or earlier
-
Confirm Media Streaming web interface is accessibleAttempt to access Media Streaming portal via HTTP (http://[NAS-IP]:[port]/mserver/) or verify the service listens on network ports 8080, 8081, or default streaming portsAffected if Media Streaming web interface responds to HTTP requests without authentication required
-
Check if remote access to NAS is enabledIn QNAP Admin Panel, verify Network & Virtual Switch settings; confirm if NAS management interface or Media Streaming is exposed to WAN/external networkAffected if NAS or Media Streaming web interface is reachable from external networks (not restricted to LAN only)
If Media Streaming add-on version is 421.1.0.2 or earlier (or 430.1.2.0 or earlier) AND the web interface is network-accessible, the environment is affected by this authentication bypass vulnerability.
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.
From vendor dataUpdate the QNAP Media Streaming add-on to the latest patched version available from QNAP's official support portal to remediate the authentication bypass.
- 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-2017-7638 — 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-2017-7638 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