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CVE-2021-47705

CNC_Ctrl DllUnregisterServer Access Violation

CVSS 8.7 HIGHEPSS 0.4%CWE-787
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.
CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:P/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N
Affected products
COMMAX Co., Ltd. · COMMAX UMS Client ActiveX Control

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References
https://www.commax.comhttps://www.exploit-db.com/exploits/50232https://www.vulncheck.com/advisories/commax-ums-client-activex-control-cnc-ctrl-dll-heap-buffer-overflowhttps://www.zeroscience.mk/en/vulnerabilities/ZSL-2021-5664.php