Mozilla Firefox before 56.0 :- Mozilla developers and community members Christian Holler, Jason Kratzer, Tobias Schneider, Tyson Smith, David Keeler, Nicolas B. Pierron, Mike Hommey, Ronald Crane, Tooru Fujisawa, and Philipp reported memory safety bugs present in Firefox. Some of these bugs showed evidence of memory corruption and we presume that with enough effort that some of these could be exploited to run arbitrary code.