An ActiveX control in HscRemoteDeploy.dll in Honeywell Enterprise Buildings Integrator (EBI) R310, R400.2, R410.1, and R410.2; SymmetrE R310, R410.1, and R410.2; ComfortPoint Open Manager (aka CPO-M) Station R100; and HMIWeb Browser client packages allows remote attackers to execute arbitrary code via a crafted HTML document.