CVE-2021-47705
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.
No affected software listed.
- https://www.commax.com
- https://www.exploit-db.com/exploits/50232
- https://www.vulncheck.com/advisories/cncctrl-dllunregisterserver-access-violation
- https://www.vulncheck.com/advisories/commax-ums-client-activex-control-cnc-ctrl-dll-heap-buffer-overflow
- https://www.zeroscience.mk/en/vulnerabilities/ZSL-2021-5664.php
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