High severityNVD Advisory· Published Dec 9, 2025· Updated Apr 15, 2026
CVE-2021-47719
CVE-2021-47719
Description
COMMAX WebViewer ActiveX Control 2.1.4.5 contains a buffer overflow vulnerability that allows attackers to execute arbitrary code by providing excessively long string arrays through multiple functions. Attackers can exploit boundary errors in Commax_WebViewer.ocx to cause buffer overflow conditions and potentially gain code execution.
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Affected products
1- Range: = 2.1.4.5
Patches
Vulnerability mechanics
References
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