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I. Basic Information for CVE-2021-33720
Vulnerability Information
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Vulnerability Title
N/A
Source: NVD (National Vulnerability Database)
Vulnerability Description
A vulnerability has been identified in SIPROTEC 5 relays with CPU variants CP050 (All versions < V8.80), SIPROTEC 5 relays with CPU variants CP100 (All versions < V8.80), SIPROTEC 5 relays with CPU variants CP300 (All versions < V8.80). Specially crafted packets sent to port 4443/tcp could cause a Denial-of-Service condition.
Source: NVD (National Vulnerability Database)
CVSS Information
N/A
Source: NVD (National Vulnerability Database)
Vulnerability Type
未进行输入大小检查的缓冲区拷贝(传统缓冲区溢出)
Source: NVD (National Vulnerability Database)
Vulnerability Title
Siemens SIPROTEC 5 代码注入漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
Siemens SIPROTEC 5是德国西门子（Siemens）公司的一款多功能继电器。 Siemens SIPROTEC 5 存在代码注入漏洞，该漏洞源于使用 tcp 协议发送到端口 4443 的特别制作的数据包可能导致拒绝服务条件或潜在的远程代码执行。
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
VendorProductAffected VersionsCPESubscribe
SiemensSIPROTEC 5 relays with CPU variants CP050 All versions < V8.80 -
SiemensSIPROTEC 5 relays with CPU variants CP100 All versions < V8.80 -
SiemensSIPROTEC 5 relays with CPU variants CP300 All versions < V8.80 -
II. Public POCs for CVE-2021-33720
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III. Intelligence Information for CVE-2021-33720
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IV. Related Vulnerabilities
Same product: SIPROTEC 5 relays with CPU variants CP050
Same vendor: Siemens
Same weakness: CWE-120
V. Comments for CVE-2021-33720

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