[RPG] Does being prone affect your Combat Maneuver Defense (CMD)

pathfinder-1eprone

When a character is prone, is their CMD penalized?

Best Answer

Yes. Penalties to your AC affect your CMD:

Any penalties to a creature's AC also apply to its CMD.

and you have an AC penalty (to melee attacks at least) when prone.

A prone defender gains a +4 bonus to Armor Class against ranged attacks, but takes a –4 penalty to AC against melee attacks.