Higgs Properties at CMS

A new boson has been discovered using proton--proton collision data recorded by CMS during the first run of the LHC, corresponding to integrated luminosities of $5.1\,\textrm{fb}^{-1}$ at $7\,\textrm{TeV}$ and $19.6\,\textrm{fb}^{-1}$ at $8\,\textrm{TeV}$. It has been observed in several decay channels with a best-fit signal strength, expressed in units of standard model Higgs boson cross section, of $0.80\pm 0.14$ at the measured mass of $125.7\pm 0.3(\textrm{stat.})\pm 0.3(\textrm{syst.}) \,\textrm{GeV}$. Consistency of its couplings with respect to the expectation from a standard model Higgs boson have been tested and no significant deviation has been observed