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I. Basic Information for CVE-2021-47705
Vulnerability Information

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Vulnerability Title
CNC_Ctrl DllUnregisterServer Access Violation
Source: NVD (National Vulnerability Database)
Vulnerability Description
COMMAX UMS Client ActiveX Control 1.7.0.2 contains a heap-based buffer overflow vulnerability that allows attackers to execute arbitrary code by providing excessively long string arrays through multiple functions. Attackers can exploit improper boundary validation in CNC_Ctrl.dll to cause heap corruption and potentially gain system-level access.
Source: NVD (National Vulnerability Database)
CVSS Information
N/A
Source: NVD (National Vulnerability Database)
Vulnerability Type
跨界内存写
Source: NVD (National Vulnerability Database)
Vulnerability Title
COMMAX UMS Client ActiveX Control 缓冲区错误漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
COMMAX UMS Client ActiveX Control是韩国COMMAX公司的一个浏览器插件。 COMMAX UMS Client ActiveX Control 1.7.0.2版本存在缓冲区错误漏洞,该漏洞源于CNC_Ctrl.dll存在堆缓冲区溢出问题,可能导致执行任意代码。
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
COMMAX Co., Ltd.COMMAX UMS Client ActiveX Control 1.7.0.2 -
II. Public POCs for CVE-2021-47705
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III. Intelligence Information for CVE-2021-47705
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IV. Related Vulnerabilities
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