  Searches for supersymmetry (SUSY) models with a compressed mass spectrum are
theoretically motivated but also pose experimental challenges. Two recent
searches from the CMS Collaboration targeting leptonic final states that can
originate from such models are presented. The first search investigates SUSY
signatures with two opposite sign or three low momentum leptons, while the
second probes the parameter space of top squark models, where the mass
difference of the lightest SUSY particles is close to the mass of the top
quark. Both searches are based on the full dataset collected by CMS during Run
2 of the Large Hadron Collider, corresponding to 137 fb$^{-1}$.
