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CVE-2020-12516— WAGO: PLC families 750-88x and 750-352 prone to DoS attack

Quick assessment

Affected
WAGO 750-331/xxx-xxx
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.

WAGO是德国万可（WAGO）的一款750-88x系列可编程逻辑控制器。该设备专门为在工业环境下应用而设计的数字运算操作电子系统。 WAGO 750-88x和750-352系列存在资源管理错误漏洞，该漏洞源于设备未对资源使用有效控制从而导致不受控制的资源消耗，攻击者可利用该漏洞使设备拒绝服务。

CVSS 7.5 · High EPSS 1.89% · P79

Possible ATT&CK Techniques 1 AI

T1499 · Endpoint Denial of Service
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I. Basic Information for CVE-2020-12516

Vulnerability Information
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Vulnerability Title
WAGO: PLC families 750-88x and 750-352 prone to DoS attack
Source: CVE Program / CVE List V5
Vulnerability Description
Older firmware versions (FW1 up to FW10) of the WAGO PLC family 750-88x and 750-352 are vulnerable for a special denial of service attack.
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
未加控制的资源消耗(资源穷尽)
Source: CVE Program / CVE List V5
Vulnerability Title
WAGO 750-88x和750-352 资源管理错误漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
WAGO是德国万可（WAGO）的一款750-88x系列可编程逻辑控制器。该设备专门为在工业环境下应用而设计的数字运算操作电子系统。 WAGO 750-88x和750-352系列存在资源管理错误漏洞，该漏洞源于设备未对资源使用有效控制从而导致不受控制的资源消耗，攻击者可利用该漏洞使设备拒绝服务。
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
WAGO 750-331/xxx-xxx FW1<=FW10 -
WAGO 750-352 FW1<=FW10 -
WAGO 750-829 FW1<=FW10 -
WAGO 750-831/xxx-xxx FW1<=FW10 -
WAGO 750-852 FW1<=FW10 -
WAGO 750-880/xxx-xxx FW1<=FW10 -
WAGO 750-881 FW1<=FW10 -
WAGO 750-882 FW1<=FW10 -
WAGO 750-885 FW1<=FW10 -
WAGO 750-889 FW1<=FW10 -

II. Public POCs for CVE-2020-12516

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III. Intelligence Information for CVE-2020-12516

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Vendor Advisories for CVE-2020-12516 (2)

IV. Related Vulnerabilities

Same vendor: WAGO
Same weakness: CWE-400