What’s Vulnerable › Vulnerabilities

CVE-2025-46414: EG4 Electronics EG4 Inverters Improper Restriction of Excessive Authentication Attempts

• Severity: high (CVSS 8.1 v3.1)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 0.4% probability of exploitation in the next 30 days
• Public exploit or detection template: none known
• Published: 2025-08-08 · updated 2026-06-17
• Weakness: CWE-307

Description

The affected product does not limit the number of attempts for inputting the correct PIN for a registered product, which may allow an attacker to gain unauthorized access using brute-force methods if they possess a valid device serial number. The API provides clear feedback when the correct PIN is entered. This vulnerability was patched in a server-side update on April 6, 2025.

Affected products

• EG4 Electronics EG4 12000XP: all versions
• EG4 Electronics EG4 12kPV: all versions
• EG4 Electronics EG4 18kPV: all versions
• EG4 Electronics EG4 6000XP: all versions
• EG4 Electronics EG4 Flex 18: all versions
• EG4 Electronics EG4 Flex 21: all versions
• EG4 Electronics EG4 GridBoss: all versions

References

• https://eg4electronics.com/contact/
• https://www.cisa.gov/news-events/ics-advisories/icsa-25-219-07

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