CVE-2022-36947: Faststone Image Viewer

Critical severity, CVSS 9.8. EPSS: 2.8% chance of exploitation in the next 30 days.

Unsafe Parsing of a PNG tRNS chunk in FastStone Image Viewer through 7.5 results in a stack buffer overflow.

Affected products

• Faststone Image Viewer: before 7.6 (fixed in 7.6)

Published 2022-08-18. Last modified 2026-06-17.