An issue was discovered in GraphicsMagick 1.3.26. A NULL pointer dereference vulnerability was found in the function ReadEnhMetaFile in coders/emf.c, which allows attackers to cause a denial of service via a crafted file. References: https://sourceforge.net/p/graphicsmagick/bugs/475/ Patch: http://hg.graphicsmagick.org/hg/GraphicsMagick/rev/ea074081678b