CVE-2011-20001
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I. Basic Information for CVE-2011-20001
Vulnerability Information
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Vulnerability Title
N/A
Source: NVD (National Vulnerability Database)
Vulnerability Description
A vulnerability has been identified in SIMATIC S7-1200 CPU V1 family (incl. SIPLUS variants) (All versions < V2.0.3), SIMATIC S7-1200 CPU V2 family (incl. SIPLUS variants) (All versions < V2.0.3). The web server interface of affected devices improperly processes incoming malformed HTTP traffic at high rate. This could allow an unauthenticated remote attacker to force the device entering the stop/defect state, thus creating a denial of service condition.
Source: NVD (National Vulnerability Database)
CVSS Information
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
Source: NVD (National Vulnerability Database)
Vulnerability Type
输入验证不恰当
Source: NVD (National Vulnerability Database)
Vulnerability Title
Siemens SIMATIC S7-1200 CPU V1 family和Siemens SIMATIC S7-1200 CPU V2 family 输入验证错误漏洞
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存在输入验证错误漏洞，该漏洞源于Web服务器接口处理高速畸形HTTP流量不当，可能导致未经认证的远程攻击者强制设备进入停止或故障状态，造成拒绝服务
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 |
|---|---|---|---|---|
| Siemens | SIMATIC S7-1200 CPU V1 family (incl. SIPLUS variants) | 0 ~ V2.0.3 | - | |
| Siemens | SIMATIC S7-1200 CPU V2 family (incl. SIPLUS variants) | 0 ~ V2.0.3 | - |
II. Public POCs for CVE-2011-20001
| # | POC Description | Source Link | Shenlong Link |
|---|
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Same Patch Batch · Siemens · 2025-10-14 · 12 CVEs total
| CVE-2025-40765 | 9.8 CRITICAL | Siemens TeleControl Server Basic 访问控制错误漏洞 |
| CVE-2025-40771 | 9.8 CRITICAL | Siemens SIMATIC CP Series 访问控制错误漏洞 |
| 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-2011-20002 | 7.4 HIGH | Siemens SIMATIC S7-1200 CPU V1 family和Siemens SIMATIC S7-1200 CPU V2 family 安全漏洞 |
| 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
V. Comments for CVE-2011-20001
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