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CVE-2021-22786

Quick assessment

Affected
Schneider Electric Modicon M340 CPU (part numbers BMXP34*)
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.

Schneider Electric Modicon M580和Schneider Electric Modicon M340都是法国施耐德电气（Schneider Electric）公司的产品。Schneider Electric Modicon M580是一款可编程自动化控制器。Schneider Electric Modicon M340是一款用于工业过程和基础设施的中程PLC（可编程逻辑控制器）。 Schneider Electric多款产品存在信息泄露漏洞，该漏洞源于当通过Modbus TCP协

CVSS 7.5 · High EPSS 0.63% · P47

Possible ATT&CK Techniques 1 AI

T1005 · Data from Local System
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I. Basic Information for CVE-2021-22786

Vulnerability Information
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Vulnerability Title
N/A
Source: CVE Program / CVE List V5
Vulnerability Description
A CWE-200: Information Exposure vulnerability exists that could cause the exposure of sensitive information stored on the memory of the controller when communicating over the Modbus TCP protocol. Affected Products: Modicon M340 CPU (part numbers BMXP34*) (Versions prior to V3.30), Modicon M580 CPU (part numbers BMEP* and BMEH*) (Versions prior to SV3.20), Modicon MC80 (BMKC80) (Versions prior to V1.6), Modicon M580 CPU Safety (part numbers BMEP58*S and BMEH58*S) (All Versions), Modicon Momentum MDI (171CBU*) (Versions prior to V2.3), Legacy Modicon Quantum (All Versions)
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N
Source: CVE Program / CVE List V5
Vulnerability Type
信息暴露
Source: CVE Program / CVE List V5
Vulnerability Title
多款Schneider Electric产品 信息泄露漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
Schneider Electric Modicon M580和Schneider Electric Modicon M340都是法国施耐德电气（Schneider Electric）公司的产品。Schneider Electric Modicon M580是一款可编程自动化控制器。Schneider Electric Modicon M340是一款用于工业过程和基础设施的中程PLC（可编程逻辑控制器）。 Schneider Electric多款产品存在信息泄露漏洞，该漏洞源于当通过Modbus TCP协
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
Schneider Electric Modicon M340 CPU (part numbers BMXP34*) All ~ V3.30 -
Schneider Electric Modicon M580 CPU (part numbers BMEP* and BMEH*) All ~ V3.20 -
Schneider Electric Modicon M580 CPU Safety (part numbers BMEP58*S and BMEH58*S) All Versions -
Schneider Electric Modicon MC80 (BMKC80) All ~ V1.6 -
Schneider Electric Modicon Momentum CPU (171CBU*) All ~ V2.3 -
Schneider Electric Legacy Modicon Quantum All Versions -

II. Public POCs for CVE-2021-22786

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III. Intelligence Information for CVE-2021-22786

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Other References for CVE-2021-22786 (1)

Same Patch Batch · Schneider Electric · 2023-02-01 · 8 CVEs total

CVE-2022-2329 9.8 CRITICAL Schneider Electric IGSS Data Server 输入验证错误漏洞
CVE-2022-24324 9.8 CRITICAL Schneider Electric IGSS Data Server 缓冲区错误漏洞
CVE-2022-42970 9.8 CRITICAL Schneider Electric Easy UPS Online Monitoring Software 访问控制错误漏洞
CVE-2022-42971 9.8 CRITICAL Schneider Electric Easy UPS Online Monitoring Software 代码问题漏洞
CVE-2022-4062 7.8 HIGH Schneider Electric EcoStruxure Power Commission 授权问题漏洞
CVE-2022-42972 7.8 HIGH Schneider Electric Easy UPS Online Monitoring Software 安全漏洞
CVE-2022-42973 7.8 HIGH Schneider Electric Easy UPS Online Monitoring Software 信任管理问题漏洞

IV. Related Vulnerabilities

Same product: Modicon M340 CPU (part numbers BMXP34*)
Same vendor: Schneider Electric
Same weakness: CWE-200

V. Comments for CVE-2021-22786

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