  A search is presented for decays beyond the standard model of the 125 GeV
Higgs bosons to a pair of light bosons, based on models with extended scalar
sectors. Light boson masses between 5 and 62.5 GeV are probed in final states
containing four tau leptons, two muons and two b quarks, or two muons and two
tau leptons. The results are from data in proton-proton collisions
corresponding to an integrated luminosity of 19.7 inverse femtobarns,
accumulated by the CMS experiment at the LHC at a center-of-mass energy of 8
TeV. No evidence for such exotic decays is found in the data. Upper limits are
set on the product of the cross section and branching fraction for several
signal processes. The results are also compared to predictions of
two-Higgs-doublet models, including those with an additional scalar singlet.
