  Recently the CDF Collaboration has announced a new precise measurement of the
$W$-boson mass $M_W$ that deviates from the Standard Model (SM) prediction by
$7\sigma$. The discrepancy in $M_W$ is about $\Delta_W\simeq70$ MeV and
probably caused by a beyond the SM physics. Within a certain scenario of
extension of the SM, we obtain the relation
$\Delta_W\simeq\frac{3\alpha}{8\pi}M_W\simeq70$ MeV, where $\alpha$ is the
electromagnetic fine structure constant. The main conjecture is the appearance
of longitudinal components of the $W$-bosons as the Goldstone bosons of a
spontaneously broken additional $SU(2)$ global symmetry at distances much
smaller than the electroweak symmetry breaking scale. We argue that within this
scenario, the masses of charged Higgs scalars can get an electromagnetic
radiative contribution which enhances the observed value of $M_{W^\pm}$ with
respect to the usual SM prediction. Our relation for $\Delta_W$ follows from
the known one-loop result for the corresponding effective Coleman-Weinberg
potential in combination with the Weinberg sum rules.
