CVE-2026-30040

CVSS 6.5 MEDIUMCWE-122

Vexday Risk Score

10Low

SSVC decision (CISA)

Track

No exploitation signal → monitor

CVSS 6.5EPSS —KEV nãoPoC —Nuclei —Metasploit —Patch —

Lifecycle

26 Jun 2026Published on NVD

Recommendation: Monitor — no exploitation signal at the moment.

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:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:L

Affected products

n/a · n/a

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References

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