Eltima Software Virtual Serial Port (VSPAX) ActiveX control (VSPort.DLL) allows remote attackers to cause a denial of service via certain function calls, as demonstrated via the (1) Attach, (2) Write, and (3) WriteStr functions.

Multiple unspecified vulnerabilities in Eltima Software RunService ActiveX control (RunService.dll) allow remote attackers to cause a denial of service via certain functions when "improperly used", as demonstrated by the AcceptControls subroutine.