Buffer overflow in IrfanView 4.00 and earlier allows user-assisted remote attackers to execute arbitrary code via a crafted .IFF file.

Buffer overflow in IrfanView before 4.37, when a multibyte-character directory name is used, allows user-assisted remote attackers to execute arbitrary code via a crafted file that is incorrectly handled by the Thumbnail tooltips feature in the Thumbnails window.

Stack-based buffer overflow in IrfanView 3.99 and 4.00 allows user-assisted remote attackers to execute arbitrary code via a crafted palette (.pal) file.

Heap-based buffer overflow in IrfanView before 4.27 allows remote attackers to cause a denial of service (application crash) or possibly execute arbitrary code via a crafted PSD image with RLE compression.

IrfanView before 4.27 does not properly handle an unspecified integer variable during processing of PSD images, which allows remote attackers to cause a denial of service (application crash) or possibly execute arbitrary code via a crafted image file that triggers a heap-based buffer overflow, related to a "sign-extension error."