When GraphicsMagick 1.3.25 processes an RGB TIFF picture (with metadata indicating a single sample per pixel) in coders/tiff.c, a buffer overflow occurs, related to QuantumTransferMode.
When GraphicsMagick 1.3.25 processes a DPX image (with metadata indicating a large width) in coders/dpx.c, a denial of service (OOM) can occur in ReadDPXImage().
The MagickRealloc function in memory.c in Graphicsmagick 1.3.25 allows remote attackers to cause a denial of service (crash) via large dimensions in a jpeg image.
Heap-based buffer overflow in the WPG format reader in GraphicsMagick 1.3.25 and earlier allows remote attackers to have unspecified impact via a colormap with a large number of entries.