---
id: "CVE-2026-41022"
kind: "vulnerability"
aliases: ["CVE-2026-41022"]
title: "Eaton easySoft accepts unverified TLS certificates from easyE4 devices"
severity: "medium"
cvss: 5.9
epss: null
exploited: false
status: "open"
category: "infrastructure"
products: []
ecosystems: []
tags: ["easye4", "easysoft", "eaton", "ics", "infrastructure", "on-prem", "power-management"]
not_affected_if: ["isolated-management-network", "no-easye4", "no-easysoft"]
published_at: "2026-10-27T12:17:07+00:00"
first_seen_at: "2026-10-27T12:31:38+00:00"
updated_at: "2026-10-27T12:32:11+00:00"
sources: [{"source": "nvd", "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-41022", "first_seen_at": "2026-10-27T12:31:38+00:00"}]
---

# Eaton easySoft accepts unverified TLS certificates from easyE4 devices

Eaton easySoft does not properly check the TLS certificates presented by easyE4 devices. A network attacker in the path can impersonate an easyE4 device and read or change traffic between the two.

_Summary, check and fix written by a model from the sources; labelled as such._

## How to check

- Check the installed easySoft version in the application's About or help menu, or on the host's installed programs list.
- Confirm whether easySoft connects to easyE4 devices over TLS on the local network: `unknown` if the sources do not say which versions are affected.

## Fix

- Update easySoft to the vendor-fixed version: `unknown` (the sources do not name it).
- Check the Eaton security advisory for the fixed release and certificate-handling guidance: `unknown`.

## Timeline

- 2026-10-27T12:31:38+00:00 nvd https://nvd.nist.gov/vuln/detail/CVE-2026-41022

## From the sources

Eaton easySoft improperly validates TLS certificates presented by easyE4 devices. A network-adjacent attacker could exploit this weakness to perform a man-in-the-middle attack and potentially intercept or modify communications between easySoft and easyE4.

---

_Free to read at a human pace. An API with keys and an MCP server are in preparation; early access: hello@infrastack.ai_