Direct damage attacks have a 10/20/30% chance to grant Exploit Weakness, causing your next Maul to deal 30% more damage and cost 75% less Force. This effect cannot occur more than once every 15 seconds. Each rank beyond the first reduces this rate limit by 3 seconds.
Patch 1.4.0 (26 Sep 2012): When Exploit Weakness activates, your next Maul deals 30% more damage and costs 75% less Force. This cannot occur more than once every 15 seconds, but each rank after the first reduces this rate limit by 3 seconds.