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

> Attackers can install malicious firmware on EG4 inverters because the system lacks integrity checks for update files, allowing arbitrary code execution.

- **Severity:** High 8.6 (`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`)
- **Exploited in the wild:** Not known
- **Login needed:** Not needed
- **Attackable:** Over the internet
- **Victim action needed:** A user has to click or open something
- **Fix available:** No
- **Published:** 8 Aug 2025
- **Updated:** 8 Aug 2025
- **Also known as:** GHSA-w46c-9jvj-8r29

## What is CVE-2025-53520?

CVE-2025-53520 is a high-severity code injection vulnerability in EG4 12000XP, published on 8 Aug 2025. An attacker can exploit it over the internet without logging in, and only if a user opens a file or follows a link.

### Official 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.

Weakness: CWE-494 (Download of Code Without Integrity Check)

## Which versions are affected by CVE-2025-53520?


## How do I fix CVE-2025-53520?

No fix has been published for CVE-2025-53520 yet. Limit exposure of the affected software until one is available.

## Is CVE-2025-53520 being exploited?

There is no known exploitation of CVE-2025-53520 in the wild and no public exploit code.

## Fix prompt for AI coding agents

```text
Check this codebase for CVE-2025-53520 and fix it if it is affected.

What it is: CVE-2025-53520 is a high-severity code injection vulnerability in EG4 12000XP, published on 8 Aug 2025. An attacker can exploit it over the internet without logging in, and only if a user opens a file or follows a link.
Exploitation: There is no known exploitation of CVE-2025-53520 in the wild and no public exploit code.

Affected product: EG4 12000XP. No package-level version data is available, so check the vendor advisory linked from the reference page.

Task:
1. Search the dependency manifests and lockfiles (for example package.json, package-lock.json, requirements.txt, poetry.lock, uv.lock, pom.xml, build.gradle, go.mod, Cargo.lock, Gemfile.lock) and any Dockerfiles for the affected packages, including transitive dependencies.
2. If an affected version is in use, upgrade it to the fixed version for its release line with the project's package manager, so the lockfile is regenerated. Prefer the smallest upgrade that fixes it.
3. If there is no fix, or the upgrade would break the build, do not guess: explain the risk and the safest workaround instead.
4. Run the tests and summarise what changed and why.
5. If nothing in the project is affected, say so and change nothing.

Reference: https://insights.sbomify.com/CVE-2025-53520/ (Markdown: https://insights.sbomify.com/CVE-2025-53520/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2025-53520
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2025-53520
- OSV: https://osv.dev/vulnerability/CVE-2025-53520

---
From sbomify Insights: https://insights.sbomify.com/CVE-2025-53520/
Summaries are generated and may contain mistakes; the official description above is the record.