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.

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.