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Enphase Installer Toolkit Android App

Plan Patch8.6ICS-CERT ICSA-23-171-02Jun 20, 2023
Attack VectorNetwork
Auth RequiredNone
ComplexityLow
User InteractionNone needed
Summary

The Enphase Installer Toolkit Android App contains hard-coded credentials that allow an attacker to obtain sensitive information and gain unauthorized access to Enphase inverter management interfaces. Successful exploitation could allow an attacker to access inverter configuration, monitoring, and control capabilities without proper authentication. Enphase has released a security update to address this vulnerability.

What this means
What could happen
An attacker with network access to the Installer Toolkit app could extract hard-coded credentials and gain unauthorized access to Enphase solar inverters and energy management systems, potentially allowing them to monitor, modify, or disable solar installations and energy data.
Who's at risk
Solar installation technicians and facility managers who use the Enphase Installer Toolkit Android app to configure and monitor Enphase inverters and battery storage systems. Any organization with distributed solar/battery installations managed through this toolkit is affected, especially those in grid operator, municipal utility, or large commercial settings.
How it could be exploited
An attacker on the same network as an Android device running the Installer Toolkit app could intercept traffic or reverse-engineer the app binary to extract hard-coded credentials stored in the application code. These credentials would grant direct access to Enphase inverter management interfaces without needing to authenticate through normal channels.
Prerequisites
  • Network access to Android device running Installer Toolkit app
  • Access to network traffic or ability to analyze app binary
Remotely exploitableNo authentication requiredLow complexity exploitationHard-coded credentialsAffects energy management systems
Exploitability
Low exploit probability (EPSS 0.1%)
Affected products (1)
ProductAffected VersionsFix Status
Installer Toolkit: <= 3.27.0≤ 3.27.0No fix yet
Remediation & Mitigation
0/3
Schedule — requires maintenance window
0/1

Patching may require device reboot — plan for process interruption

HOTFIXUpdate Enphase Installer Toolkit to the patched version released in Update A
Long-term hardening
0/2
HARDENINGRestrict network access to devices running Installer Toolkit; keep them on a separate network segment isolated from production systems and the internet
HARDENINGIf remote access to Installer Toolkit is required, route it through a VPN or secure tunnel with access controls
View full CISA ICS-CERT advisory
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