Modified elastomer composition, crosslinked elastomer composition, and molded article thereof

A modified elastomer composition comprising following components (A), (B′), and (D),

• wherein the components (A), (B′) and (D) are grafted with following component (E):
• component (A) comprising an ethylene-α-olefin-non-conjugated diene copolymer rubber;
• component (B′) comprising an ethylene-α-olefin copolymer rubber whose melting end peak temperature measured using a differential scanning calorimeter (DSC) is 90° C. or higher and which contains no non-conjugated diene units;
• component (D) comprising an unsaturated silane compound;
• and
• component (E) comprising a peroxide,
• a content of the component (A) is 5 to 50 parts by mass based on 100 parts by mass of a total of the component (A) and the component (B′), and
• a content of the component (B′) is 95 to 50 parts by mass based on 100 parts by mass of the total of the component (A) and the component (B′).