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Tc Mguard Rs4000 4g Vzw Vpn FirmwareOperating system · Phoenixcontact

CVE-2024-7699

HIGH · 8.8 CVSS v3.1 Published 2024-09-10
Fix available
A fix is available. Upgrade to 8.9.3 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
An low privileged remote attacker can execute OS commands with root privileges due to improper neutralization of special elements in user data.

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

This is a command injection vulnerability where a low-privileged remote attacker can execute arbitrary OS commands with root privileges due to improper neutralization of special elements in user data. User-supplied input is being passed to system calls without proper sanitization, allowing attackers to inject shell metacharacters and escalate privileges.

MitigationImplement proper input validation and sanitization, preferably using parameterized commands or allowlist validation instead of blacklisting. Ensure all user input is treated as untrusted and never directly passed to system shell commands.

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
Tc Mguard Rs4000 4g Vzw Vpn FirmwareOperating system
Affected:< 8.9.3
Tc Mguard Rs4000 4g Vpn FirmwareOperating system
Affected:< 8.9.3
Tc Mguard Rs4000 4g Att Vpn FirmwareOperating system
Affected:< 8.9.3
Tc Mguard Rs4000 3g Vpn FirmwareOperating system
Affected:< 8.9.3
Tc Mguard Rs2000 4g Vzw Vpn FirmwareOperating system
Affected:< 8.9.3
Tc Mguard Rs2000 4g Vpn FirmwareOperating system
Affected:< 8.9.3
Tc Mguard Rs2000 4g Att Vpn FirmwareOperating system
Affected:< 8.9.3
Tc Mguard Rs2000 3g Vpn FirmwareOperating system
Affected:< 8.9.3

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 the device model
    Locate the Mguard device label or check the web interface/system information to confirm whether the unit is an RS2000 or RS4000 variant with 3G, 4G, 4G ATT, or 4G VZW configuration.
    Affected if The device is not one of the listed models (RS2000 or RS4000 variants).
  2. Check the installed firmware version
    Access the device management interface or use the vendor-provided tool to retrieve the current firmware version. Compare the version number against 8.9.3.
    Affected if The firmware version is lower than 8.9.3 (e.g., 8.9.2, 8.8.x, etc.).
  3. Verify remote access is enabled
    Check the device network configuration to determine if the management interface, VPN portal, or web-based remote access service is exposed to untrusted networks.
    Affected if Remote management or VPN access interfaces are accessible from untrusted networks.
  4. Confirm user privilege settings
    Review the user accounts configured on the device and check whether low-privilege accounts exist or if all users have administrative/root-level access.
    Affected if The device allows low-privilege user accounts to access features that process user-supplied input.

The environment is affected if the device is an RS2000 or RS4000 Mguard VPN model running firmware version lower than 8.9.3, with remote management or web interfaces accessible to untrusted users.

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 8.9.3 or later
Fixed in 8.9.3
Interim mitigation

Implement proper input validation and sanitization, preferably using parameterized commands or allowlist validation instead of blacklisting. Ensure all user input is treated as untrusted and never directly passed to system shell commands.

Recommended fix Moderate confidence

Tc Mguard RS2000/RS4000 VPN Firmware 8.9.3 or later

  1. 1. Identify the current firmware version of the Tc Mguard device by accessing the admin interface or checking system information.
  2. 2. Download the firmware version 8.9.3 or later from the official Tc Mguard vendor support portal or authorized distributor.
  3. 3. Backup the current device configuration before applying the firmware update.
  4. 4. Access the device administration interface and navigate to the firmware update/upgrade section.
  5. 5. Upload the downloaded firmware file (8.9.3 or later) to the device.
  6. 6. Initiate the firmware update process and wait for completion - do not power off the device during this process.
  7. 7. After the device restarts, verify the new firmware version is installed correctly.
  8. 8. Verify the device configuration is intact and all VPN services are functioning properly.
Caveat Review vendor release notes for any configuration changes or feature modifications in version 8.9.3 before upgrading

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

Fix this in Tc Mguard Rs4000 4g Vzw Vpn Firmware Scoped from the published advisory
  • Consultation6.0 h
  • Implementation12.0 h
  • Testing10.0 h
  • Review / QA6.0 h
34.0 hours of engineering $5,940
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Scan for this in your stack

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dbcve dependency scanner

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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-2024-7699 in production — separate from our analysis above.

No notes yet

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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