8.8
HIGH CVSS 3.1
CVE-2025-53520
EG4 Firmware Update Vulnerability - Unchecked Archive Exploitation
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.

INFO

Published Date :

Aug. 8, 2025, 5:15 p.m.

Last Modified :

Aug. 8, 2025, 8:30 p.m.

Remotely Exploit :

Yes !
Affected Products

The following products are affected by CVE-2025-53520 vulnerability. Even if cvefeed.io is aware of the exact versions of the products that are affected, the information is not represented in the table below.

No affected product recoded yet

CVSS Scores
The Common Vulnerability Scoring System is a standardized framework for assessing the severity of vulnerabilities in software and systems. We collect and displays CVSS scores from various sources for each CVE.
Score Version Severity Vector Exploitability Score Impact Score Source
CVSS 3.1 HIGH [email protected]
CVSS 4.0 HIGH [email protected]
References to Advisories, Solutions, and Tools

Here, you will find a curated list of external links that provide in-depth information, practical solutions, and valuable tools related to CVE-2025-53520.

URL Resource
https://eg4electronics.com/contact/
https://www.cisa.gov/news-events/ics-advisories/icsa-25-219-07
CWE - Common Weakness Enumeration

While CVE identifies specific instances of vulnerabilities, CWE categorizes the common flaws or weaknesses that can lead to vulnerabilities. CVE-2025-53520 is associated with the following CWEs:

We scan GitHub repositories to detect new proof-of-concept exploits. Following list is a collection of public exploits and proof-of-concepts, which have been published on GitHub (sorted by the most recently updated).

Results are limited to the first 15 repositories due to potential performance issues.

The following list is the news that have been mention CVE-2025-53520 vulnerability anywhere in the article.

  • The Cyber Express
CISA Warns of Critical ICS Flaws in Siemens, Tigo Energy, and EG4 Equipment

The U.S. Cybersecurity and Infrastructure Security Agency (CISA) have released four new Industrial Control Systems (ICS) advisories. These advisories expose multiple vulnerabilities in widely used ICS ... Read more

Published Date: Aug 22, 2025 (18 hours, 59 minutes ago)
  • Daily CyberSecurity
CISA Alert: Critical Flaws Expose EG4 Electronics Inverters to Remote Takeover

The U.S. Cybersecurity and Infrastructure Security Agency (CISA) has issued a risk evaluation warning about multiple high-severity vulnerabilities affecting all versions of several EG4 Electronics inv ... Read more

Published Date: Aug 09, 2025 (2 weeks ago)

The following table lists the changes that have been made to the CVE-2025-53520 vulnerability over time.

Vulnerability history details can be useful for understanding the evolution of a vulnerability, and for identifying the most recent changes that may impact the vulnerability's severity, exploitability, or other characteristics.

  • New CVE Received by [email protected]

    Aug. 08, 2025

    Action Type Old Value New Value
    Added 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.
    Added CVSS V4.0 AV:N/AC:L/AT:N/PR:N/UI:A/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X
    Added CVSS V3.1 AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
    Added CWE CWE-494
    Added Reference https://eg4electronics.com/contact/
    Added Reference https://www.cisa.gov/news-events/ics-advisories/icsa-25-219-07
EPSS is a daily estimate of the probability of exploitation activity being observed over the next 30 days. Following chart shows the EPSS score history of the vulnerability.
Vulnerability Scoring Details
Base CVSS Score: 8.6
Attack Vector
Attack Complexity
Attack Requirements
Privileges Required
User Interaction
VS Confidentiality
VS Integrity
VS Availability
SS Confidentiality
SS Integrity
SS Availability
Base CVSS Score: 8.8
Attack Vector
Attack Complexity
Privileges Required
User Interaction
Scope
Confidentiality Impact
Integrity Impact
Availability Impact