---
id: "CVE-2026-41021"
kind: "vulnerability"
aliases: ["CVE-2026-41021"]
title: "Eaton easyE4: weak password policy lets captured hashes be cracked"
severity: "high"
cvss: 7.5
epss: null
exploited: false
status: "open"
category: "infrastructure"
products: []
ecosystems: []
tags: ["easye4", "eaton", "industrial-control", "infrastructure", "self-hosted"]
not_affected_if: []
published_at: "2026-10-27T12:17:07+00:00"
first_seen_at: "2026-10-27T12:31:38+00:00"
updated_at: "2026-10-27T12:32:01+00:00"
sources: [{"source": "nvd", "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-41021", "first_seen_at": "2026-10-27T12:31:38+00:00"}]
---

# Eaton easyE4: weak password policy lets captured hashes be cracked

Eaton easyE4 devices enforce an insufficiently strong password policy. An attacker who obtains a password hash, for example through CVE-2026-41020, can guess passwords offline and may recover user credentials.

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

## How to check

- unknown

## Fix

- unknown

## Timeline

- 2026-10-27T12:31:38+00:00 nvd https://nvd.nist.gov/vuln/detail/CVE-2026-41021

## From the sources

Eaton easyE4 uses an insufficiently strong password policy. An attacker who obtains a password hash, including through CVE-2026-41020, could perform an offline password-guessing attack and potentially recover user credentials.

---

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