CVE-2019-9098
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 issue was discovered on Moxa MGate MB3170 and MB3270 devices before 4.1, MB3280 and MB3480 devices before 3.1, MB3660 devices before 2.3, and MB3180 devices before 2.1. An Integer overflow in the built-in web server allows remote attackers to initiate DoS.
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 confidenceInteger overflow vulnerability in the built-in web server of Moxa MGate series industrial protocol gateways (MB3170, MB3270, MB3280, MB3480, MB3660, MB3180) allows remote unauthenticated attackers to cause denial of service via specially crafted HTTP requests.
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<= 4.0<= 4.0<= 2.0<= 3.0<= 3.0<= 2.2CVSS 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
- 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.
-
Identify the MGate modelAccess the device web interface or check the device label/management console to confirm the exact model number (MB3170, MB3270, MB3180, MB3280, MB3480, or MB3660).Affected if The device is one of these six models.
-
Check the installed firmware versionLog into the device web interface and navigate to the System Settings or Firmware Information page to view the current firmware version. Alternatively, use the device's command-line interface or management software to query the firmware version.Affected if The firmware version is at or below 4.0 for MB3170/MB3270, at or below 2.0 for MB3180, at or below 3.0 for MB3280/MB3480, or at or below 2.2 for MB3660.
-
Confirm the built-in web server is enabledAccess the device management interface and verify that the HTTP/HTTPS web server service is currently enabled in the network settings or services configuration.Affected if The web server feature is enabled and accessible over the network.
-
Assess network accessibility of the web interfaceDetermine if the device web interface is exposed to untrusted networks by checking firewall rules, VLAN configuration, or networkACLs that control access to the device IP address on ports 80/443.Affected if The web interface is reachable from networks outside the trusted management network.
If the device is an affected MGate model, runs a firmware version within the affected ranges, has the web server enabled, and is network-accessible to untrusted parties, the environment is vulnerable to this CVE.
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 firmware to version 4.1 or later for MB3170/MB3270, 3.1 or later for MB3280/MB3480, 2.3 or later for MB3660, and 2.1 or later for MB3180. If immediate patching is not possible, restrict network access to the device web interface via firewall or VLAN segmentation.
- Consultation2.0 h
- Implementation4.0 h
- Testing3.0 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 $2,800.
Scan for this in your stack
Free · runs locallyCheck whether your project pulls in CVE-2019-9098 — 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-2019-9098 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