CVE-2020-35845: Faststone Image Viewer

High severity, CVSS 7.8. EPSS: 0.9% chance of exploitation in the next 30 days.

FastStone Image Viewer 7.5 has an out-of-bounds write (via a crafted image file) at FSViewer.exe+0x96cf.

Affected products

• Faststone Image Viewer: version 7.5 only

Published 2021-01-26. Last modified 2026-06-17.