Description
The public-facing product registration endpoint server responds
differently depending on whether the S/N is valid and unregistered,
valid but already registered, or does not exist in the database.
Combined with the fact that serial numbers are sequentially assigned,
this allows an attacker to gain information on the product registration
status of different S/Ns.
Affected products
| Vendor | Product | Affected | Fixed |
|---|---|---|---|
| EG4 Electronics | EG4 12kPV | all versions | — |
| EG4 Electronics | EG4 18kPV | all versions | — |
| EG4 Electronics | EG4 Flex 21 | all versions | — |
| EG4 Electronics | EG4 Flex 18 | all versions | — |
| EG4 Electronics | EG4 6000XP | all versions | — |
| EG4 Electronics | EG4 12000XP | all versions | — |
| EG4 Electronics | EG4 GridBoss | all versions | — |
Advisories 1
- ICSA-25-219-07 EG4 Electronics EG4 Inverters (Update B) CISA ICS & IT advisories · Sep 9, 2025