# CVE-2025-53520

## Summary

- **CVE ID:** CVE-2025-53520
- **Severity:** HIGH
- **CVSS Score:** 8.8 (CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:A/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N)
- **CWE:** CWE-494
- **Published:** Aug 8, 2025
- **Last Modified:** Mar 13, 2026

## 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 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)

## References

- [CNA](https://www.cisa.gov/news-events/ics-advisories/icsa-25-219-07)
- [CNA](https://eg4electronics.com/contact/)

## Exploitation Prediction (EPSS)

- **EPSS Score:** 0.20%
- **EPSS Percentile:** 10.4

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_Exported from OnDuty AI Vulnerability Intelligence on 2026-09-11._