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Oncell G3470a Lte Eu T FirmwareOperating system · Moxa

CVE-2024-4638

HIGH · 8.8 CVSS v3.1 Published 2024-06-25
Fix available
A fix is available. Upgrade to after 1.7.7 or later.
See remediation →
94/100
Remediation priority · Urgent
Remotely reachable Zero-click

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 · unedited
OnCell G3470A-LTE Series firmware versions v1.7.7 and prior have been identified as vulnerable due to a lack of neutralized inputs in the web key upload function. An attacker could modify the intended commands sent to target functions, which could cause malicious users to execute unauthorized commands.

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 confidence

Command injection vulnerability in the web key upload function of OnCell G3470A-LTE Series industrial cellular gateway firmware (v1.7.7 and prior). The lack of input sanitization allows attackers to modify commands and execute unauthorized operating system commands remotely.

MitigationApply vendor firmware update v1.7.8 or later; if unavailable, implement network segmentation and restrict administrative web interface access to trusted IPs only.

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
Oncell G3470a Lte Eu T FirmwareOperating system
Affected:<= 1.7.7
Oncell G3470a Lte Eu FirmwareOperating system
Affected:<= 1.7.7
Oncell G3470a Lte Us FirmwareOperating system
Affected:<= 1.7.7
Oncell G3470a Lte Us T FirmwareOperating system
Affected:<= 1.7.7

CVSS 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 checks

Work through these to decide whether this CVE applies to you.

  1. Identify device model
    Access the device web interface or check the physical device label for the exact model number (OnCell G3470A-LTE). Confirm it is the G3470A-LTE Series industrial cellular gateway.
    Affected if The device is a Moxa OnCell G3470A-LTE variant (EU, EU-T, US, or US-T).
  2. Check firmware version
    Log into the device web administrative interface and navigate to the System Status or Firmware Information page to view the installed firmware version. Alternatively, check via CLI if accessible.
    Affected if The installed firmware version is 1.7.7 or any prior version (1.7.7, 1.7.6, etc.).
  3. Verify web key upload function is accessible
    Locate the web key upload feature in the device web interface, typically under Configuration, Security, or Certificate/Key Management settings. Confirm the feature is present and accessible.
    Affected if The web key upload function exists and is accessible without additional authentication beyond standard admin credentials.
  4. Assess web interface exposure
    Determine if the device administrative web interface is reachable from untrusted networks. Check network firewall rules, NAT configurations, or port forwards that expose HTTP/HTTPS ports (typically 80/443) to the internet or untrusted segments.
    Affected if The administrative web interface is exposed to untrusted networks or the internet without IP restriction.

A defender is affected if they operate any OnCell G3470A-LTE variant running firmware version 1.7.7 or prior, with the web key upload feature accessible and the administrative interface exposed to untrusted networks.

Generated from the published advisory. Verify against your own configuration.

Check your environment

Paste your version and any relevant configuration and it will be compared against the affected criteria above. Do not include secrets or credentials.

AI-assisted, checked against the advisory. Informational, not a guarantee.

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 · scoped
Upgrade available Upgrade to a release after 1.7.7
Interim mitigation

Apply vendor firmware update v1.7.8 or later; if unavailable, implement network segmentation and restrict administrative web interface access to trusted IPs only.

Recommended fix Moderate confidence

OnCell G3470A-LTE firmware v1.7.8 or later (latest available version from Moxa)

  1. 1. Identify the specific OnCell G3470A-LTE model variant in use (EU, EU T, US, or US T)
  2. 2. Navigate to the official Moxa support website at www.moxa.com
  3. 3. Locate the OnCell G3470A-LTE product page and check for firmware downloads
  4. 4. Download the latest available firmware version (version must be higher than v1.7.7)
  5. 5. Consult the product firmware upgrade manual for detailed upgrade instructions
  6. 6. Before upgrading, backup the current device configuration
  7. 7. Perform the firmware upgrade following the vendor's documented procedure
  8. 8. After upgrade, verify the device is functioning normally and the web interface is accessible
Caveat Review Moxa release notes for any changes to configuration parameters or feature compatibility before upgrading

Generated from the published advisory — verify against the referenced sources before acting.

Fix this in Oncell G3470a Lte Eu T Firmware Scoped from the published advisory
  • Consultation8.0 h
  • Implementation16.0 h
  • Testing12.0 h
  • Review / QA4.0 h
40.0 hours of engineering $7,000
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References Go to the primary sourcePrimary sources — vendor advisories, patches and trackers. Where our summary and a reference disagree, the reference wins.

Primary sources

Practitioner notes

Contributed

Peer-ranked notes from engineers who’ve handled CVE-2024-4638 in production — separate from our analysis above.

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What this is

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.

What belongs here
  • 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