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CVE-2024-8419— Improper Access Control vulnerability in AC4xxS devices

Quick assessment

Affected
ifm electronic GmbH ifm Smart PLC AC402s
Exploitation
No confirmed in-the-wild exploitation; assess based on exposure
Recommended action
Check the vendor advisory and references for a fixed version. If immediate upgrade is impossible, restrict exposure and increase monitoring.

ifm electronic Smart PLC AC4xxS是德国易福门电子（ifm electronic）公司的一系列主机/网关。 ifm electronic Smart PLC AC4xxS存在访问控制错误漏洞，该漏洞源于端点脚本缺少身份验证，可能导致未经授权的远程攻击者通过网络使系统进入故障安全状态。

CVSS 7.5 · High EPSS 0.42% · P35

Possible ATT&CK Techniques 1 AI

T1190 · Exploit Public-Facing Application
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I. Basic Information for CVE-2024-8419

Vulnerability Information
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Vulnerability Title
Improper Access Control vulnerability in AC4xxS devices
Source: CVE Program / CVE List V5
Vulnerability Description
The endpoint hosts a script that allows an unauthorized remote attacker to put the system in a fail-safe state over the network due to missing authentication.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
Source: CVE Program / CVE List V5
Vulnerability Type
关键功能的认证机制缺失
Source: CVE Program / CVE List V5
Vulnerability Title
ifm electronic Smart PLC AC4xxS 访问控制错误漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
ifm electronic Smart PLC AC4xxS是德国易福门电子（ifm electronic）公司的一系列主机/网关。 ifm electronic Smart PLC AC4xxS存在访问控制错误漏洞，该漏洞源于端点脚本缺少身份验证，可能导致未经授权的远程攻击者通过网络使系统进入故障安全状态。
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
ifm electronic GmbH ifm Smart PLC AC402s 4.04 ~ 4.3.17 -
ifm electronic GmbH ifm Smart PLC AC422s 4.04 ~ 4.3.17 -
ifm electronic GmbH ifm Smart PLC AC424s 4.04 ~ 4.3.17 -
ifm electronic GmbH ifm Smart PLC AC432s 4.04 ~ 4.3.17 -
ifm electronic GmbH ifm Smart PLC AC434s 4.04 ~ 4.3.17 -

II. Public POCs for CVE-2024-8419

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III. Intelligence Information for CVE-2024-8419

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Vendor Advisories for CVE-2024-8419 (1)

IV. Related Vulnerabilities

Same weakness: CWE-306

V. Comments for CVE-2024-8419

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