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CVE-2023-43776— Weak encoding vulnerability in easyE4

Quick assessment

Affected
Eaton easyE4
Exploitation
Public or AI PoC available; prioritize validation
Recommended action
Check the vendor advisory and references for a fixed version. If immediate upgrade is impossible, restrict exposure and increase monitoring.

Eaton easyE4 PLC是美国伊顿（Eaton）公司的一款 PLC。 Eaton easyE4 PLC存在安全漏洞，该漏洞源于程序文件中的设备密码采用弱编码算法存储。

CVSS 6.8 · Medium EPSS 0.12% · P2

Possible ATT&CK Techniques 1 AI

T1552.004 · Private Keys
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I. Basic Information for CVE-2023-43776

Vulnerability Information
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Vulnerability Title
Weak encoding vulnerability in easyE4
Source: CVE Program / CVE List V5
Vulnerability 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).
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:P/AC:H/PR:H/UI:R/S:C/C:H/I:H/A:H
Source: CVE Program / CVE List V5
Vulnerability Type
口令使用弱密码学算法
Source: CVE Program / CVE List V5
Vulnerability Title
Eaton easyE4 PLC 加密问题漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
Eaton easyE4 PLC是美国伊顿（Eaton）公司的一款 PLC。 Eaton easyE4 PLC存在安全漏洞，该漏洞源于程序文件中的设备密码采用弱编码算法存储。
Source: CNNVD (China National Vulnerability Database)
CVSS Information
N/A
Source: CNNVD (China National Vulnerability Database)
Vulnerability Type
N/A
Source: CNNVD (China National Vulnerability Database)

Affected Products

Vendor Product Affected Versions CPE Subscribe
Eaton easyE4 0 ~ 2.02 -

II. Public POCs for CVE-2023-43776

# POC Description Source Link Shenlong Link
1 Password recovery easySoft and easyE4 (CVE-2023-43776 and CVE-2023-43777) https://github.com/SySS-Research/easy-password-recovery POC Details
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III. Intelligence Information for CVE-2023-43776

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Other References for CVE-2023-43776 (1)

IV. Related Vulnerabilities

Same vendor: Eaton
Same weakness: CWE-261

V. Comments for CVE-2023-43776

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