Buffer overflow in Sumatrapdfreader Sumatrapdf
CVE-2026-107736
SumatraPDF is a multi-format reader for Windows. In 3.6.1 and earlier, MaybeFlipBitmap() asks GDI+ to read the attacker-controlled PropertyTagOrientation size through GetPropertyItem() while supplying only a fixed 64-byte buf on the stack. Opening a crafted TIFF with enough EXIF Orientation values can cause attacker-selected bytes to overwrite stack control data, while tested builds terminate through the stack cookie check. No broader impact is claimed beyond the advisory-supported conditions. No fixed version is available as of this review.
Vulnerability class: Buffer Overflow
Published · last modified .
EPSS exploit prediction
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Affected products
- Sumatrapdfreader Sumatrapdf — versions <= 3.6.1