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CVE-2011-20002

Quick assessment

Affected
Siemens SIMATIC S7-1200 CPU V1 family (incl. SIPLUS variants)
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.

Siemens SIMATIC S7-1200 CPU V1 family和Siemens SIMATIC S7-1200 CPU V2 family都是德国西门子（Siemens）公司的一系列可编程逻辑控制器。 Siemens SIMATIC S7-1200 CPU V1 family和Siemens SIMATIC S7-1200 CPU V2 family存在安全漏洞，该漏洞源于工程软件通信中存在捕获重放问题，可能导致攻击者执行任意记录的命令。

CVSS 7.4 · High EPSS 0.31% · P21

Possible ATT&CK Techniques 1 AI

T1557 · Adversary-in-the-Middle
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I. Basic Information for CVE-2011-20002

Vulnerability Information
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Vulnerability Title
N/A
Source: CVE Program / CVE List V5
Vulnerability Description
A vulnerability has been identified in SIMATIC S7-1200 CPU V1 family (incl. SIPLUS variants) (All versions < V2.0.2), SIMATIC S7-1200 CPU V2 family (incl. SIPLUS variants) (All versions < V2.0.2). Affected controllers are vulnerable to capture-replay in the communication with the engineering software. This could allow an on-path attacker between the engineering software and the controller to execute any previously recorded commands at a later time (e.g. set the controller to STOP), regardless whether or not the controller had a password configured.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:H/A:H
Source: CVE Program / CVE List V5
Vulnerability Type
使用捕获-重放进行的认证绕过
Source: CVE Program / CVE List V5
Vulnerability Title
Siemens SIMATIC S7-1200 CPU V1 family和Siemens SIMATIC S7-1200 CPU V2 family 安全漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
Siemens SIMATIC S7-1200 CPU V1 family和Siemens SIMATIC S7-1200 CPU V2 family都是德国西门子（Siemens）公司的一系列可编程逻辑控制器。 Siemens SIMATIC S7-1200 CPU V1 family和Siemens SIMATIC S7-1200 CPU V2 family存在安全漏洞，该漏洞源于工程软件通信中存在捕获重放问题，可能导致攻击者执行任意记录的命令。
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
Siemens SIMATIC S7-1200 CPU V1 family (incl. SIPLUS variants) 0 ~ V2.0.2 -
Siemens SIMATIC S7-1200 CPU V2 family (incl. SIPLUS variants) 0 ~ V2.0.2 -

II. Public POCs for CVE-2011-20002

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III. Intelligence Information for CVE-2011-20002

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Same Patch Batch · Siemens · 2025-10-14 · 12 CVEs total

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CVE-2025-40755 8.8 HIGH Siemens SINEC NMS SQL注入漏洞
CVE-2025-40809 7.8 HIGH Siemens Solid Edge SE2025和Siemens Solid Edge SE2024 缓冲区错误漏洞
CVE-2025-40810 7.8 HIGH Siemens Solid Edge SE2025和Siemens Solid Edge SE2024 缓冲区错误漏洞
CVE-2025-40811 7.8 HIGH Siemens Solid Edge SE2025和Siemens Solid Edge SE2024 缓冲区错误漏洞
CVE-2025-40812 7.8 HIGH Siemens Solid Edge SE2025和Siemens Solid Edge SE2024 缓冲区错误漏洞
CVE-2011-20001 7.5 HIGH Siemens SIMATIC S7-1200 CPU V1 family和Siemens SIMATIC S7-1200 CPU V2 family 输入验证错误漏洞
CVE-2025-40772 7.4 HIGH Siemens SiPass integrated 跨站脚本漏洞
CVE-2025-40774 4.4 MEDIUM Siemens SiPass Integrated 安全漏洞
CVE-2025-40773 3.5 LOW Siemens SiPass integrated 安全漏洞

IV. Related Vulnerabilities

Same product: SIMATIC S7-1200 CPU V1 family (incl. SIPLUS variants)
Same vendor: Siemens
Same weakness: CWE-294

V. Comments for CVE-2011-20002

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