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Iq Gateway FirmwareOperating system · Enphase

CVE-2024-21878

CRITICAL · 9.8 CVSS v3.1 Published 2024-08-12
Fix available
A fix is available. Upgrade to 8.2.4225 or later.
See remediation →
100/100
Remediation priority · Urgent
Remotely reachable No privileges 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
Improper Neutralization of Special Elements used in a Command ('Command Injection') vulnerability in Enphase IQ Gateway (formerly known as Envoy) allows OS Command Injection. This vulnerability is present in an internal script.This issue affects Envoy: from 4.x up to and including 8.x and is currently unpatched.

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 confidence

A command injection vulnerability in Enphase IQ Gateway (Envoy) firmware versions 4.x through 8.x allows attackers to inject OS commands through an internal script that improperly handles special elements. This is a critical (CVSS 9.8) pre-authentication flaw affecting the device's internal scripting functionality.

MitigationSince unpatched, implement network segmentation to isolate IQ Gateway devices from untrusted networks, restrict management interfaces to trusted IP ranges, and monitor for anomalous behavior. Consider compensating controls such as web application firewalls or intrusion detection while awaiting vendor patch.

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
Iq Gateway FirmwareOperating system
Affected:>= 4.0, < 8.2.4225

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
None
User interaction
None
Scope
Unchanged
Confidentiality
High
Integrity
High
Availability
High

CVSS:3.1/AV:N/AC:L/PR:N/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 Enphase IQ Gateway (Envoy) device on your network and confirm it is the correct model. Check the device label or management interface for the model name.
    Affected if The device is not an Enphase IQ Gateway (Envoy)
  2. Check firmware version
    Access the IQ Gateway web interface or use the enphase-local-api (typically at http://<device-ip>/api/v1/production.json) to retrieve the firmware version. Compare it to the affected range: 4.0.0 through 8.2.4224.
    Affected if The installed firmware version is >= 4.0.0 and < 8.2.4225
  3. Verify internal scripting interface accessibility
    The vulnerability affects an internal script that handles special elements. Check if the device's internal CGI scripts or diagnostic endpoints are accessible from the network. Look for endpoints like /admin or /cgi-bin/ paths in the web interface.
    Affected if The internal scripting or diagnostic interface is exposed and reachable from the network
  4. Assess network exposure
    Determine if the IQ Gateway management interface (HTTP/HTTPS on ports 80/443 or 8080/8443) is accessible from untrusted networks. Check firewall rules and network segmentation surrounding the device.
    Affected if The device management interface is directly accessible from untrusted or external networks without restriction

You are affected if the device is an Enphase IQ Gateway with firmware version 4.0.0 through 8.2.4224 and the internal scripting interface is network-accessible.

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 8.2.4225 or later
Fixed in 8.2.4225
Interim mitigation

Since unpatched, implement network segmentation to isolate IQ Gateway devices from untrusted networks, restrict management interfaces to trusted IP ranges, and monitor for anomalous behavior. Consider compensating controls such as web application firewalls or intrusion detection while awaiting vendor patch.

Recommended fix High confidence

Upgrade to IQ Gateway firmware version 8.2.4225 or later

  1. 1. Access the IQ Gateway web interface or Enphase Installer App to check the current firmware version.
  2. 2. Navigate to the firmware update section in the device settings.
  3. 3. Download IQ Gateway firmware version 8.2.4225 or later from Enphase's official support website (enphase.com/support).
  4. 4. Initiate the firmware update through the web interface or Enphase mobile app, following the on-screen instructions.
  5. 5. Ensure the device remains powered on and connected during the update process.
  6. 6. After the update completes, verify the firmware version has been updated to 8.2.4225 or higher to confirm the vulnerability is remediated.
Caveat Review Enphase release notes for any configuration or compatibility changes between your current version and 8.2.4225+

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

Fix this in Iq Gateway Firmware Scoped from the published advisory
  • Consultation4.0 h
  • Implementation8.0 h
  • Testing4.0 h
  • Review / QA2.0 h
18.0 hours of engineering $3,200
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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-2024-21878 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