The MOD3 command traffic between the monitoring application and the inverter is transmitted in plaintext without encryption or obfuscation. This vulnerability may allow an attacker with access to a local network to intercept, manipulate, replay, or forge critical data, including read/write operations for voltage, current, and power configuration, operational status, alarms, telemetry, system reset, or inverter control commands, potentially disrupting power generation or reconfiguring inverter settings.
https://www.cisa.gov/news-events/ics-advisories/icsa-25-219-07
https://eg4electronics.com/wp-content/uploads/2025/09/EG4-Wi-Fi-Dongle-Dongle-Firmware-Update.pdf
Published: 2025-08-08
Updated: 2026-04-15
Base Score: 5.9
Vector: CVSS2#AV:L/AC:H/Au:N/C:C/I:C/A:P
Severity: Medium
Base Score: 6.9
Vector: CVSS:3.1/AV:L/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:L
Severity: Medium
Base Score: 7.5
Vector: CVSS:4.0/AV:L/AC:L/AT:P/PR:N/UI:N/VC:H/VI:H/VA:L/SC:N/SI:N/SA:N
Severity: High
EPSS: 0.00006