Recent photoproduction measurements of the ${\ensuremath{\rho}}^{0}$ vector meson in the nuclear medium have revealed a substantial reduction in its mass from the vacuum value. The decay of the ${\ensuremath{\rho}}^{0}$ within the strong nucleonic field at low relative ${\ensuremath{\rho}}^{0}$-$N$ momenta, and the collective ${N}^{*}{(1520)N}^{\ensuremath{-}1}$ excitation, have both been presented previously as plausible explanations. In this Rapid Communication we show that the reduction can be explained through a bound ${\ensuremath{\rho}}^{0}$-nucleus state. The depth of the potential required to produce the bound state is consistent with that extracted from Dirac phenomenology using Brown-Rho scaling.