VULNERABILITY INTELLIGENCE
CVE-2021-47705
EPSS probability0.49%
CISA KEVNot currently listed
Published2025-12-09
Last modified2026-06-17
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.
Weakness classification
- disclosure@vulncheck.com: CWE-787