CVE-2026-30040

Description

A heap overflow in the FSViewer.exe process of FastStone Image Viewer v8.3 allows attackers to cause a execute arbitrary code in the context of the current process via supplying a crafted JPEG 2000 (JP2) file.

CVSS Vector

References

• https://kb.cert.org/vuls/id/936962
• https://www.faststone.org/FSIVDownload.htm