Searches for BSM Higgs bosons in the VV, Vh, and hh final states in CMS

We present recent searches for high-mass scalar bosons ($H$) decaying to light-Higgs ($h$) or gauge ($V$) bosons in the CMS experiment, using 13 TeV proton-proton collision data from the RunII of the LHC machine. Namely, searches for $H \rightarrow ZZ$, $A \rightarrow Zh$, and $H \rightarrow hh$ are reported. Model-independent constraints on cross-sections or parameter exclusions in specific theory frameworks beyond the Standard Model, such as 2-Higgs-Doublet Models, are presented.