What’s Vulnerable › Vulnerabilities

CVE-2025-53520: EG4 Electronics EG4 Inverters Download of Code Without Integrity Check

• Severity: high (CVSS 8.8 v3.1)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 0.2% 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-494

Description

The affected product allows firmware updates to be downloaded from EG4's website, transferred via USB dongles, or installed through EG4's Monitoring Center (remote, cloud-connected interface) or via a serial connection, and can install these files without integrity checks. The TTComp archive format used for the firmware is unencrypted and can be unpacked and altered without detection.

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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