CVE-2026-30040
MEDIUMCVSS 6.5/10
Last modified
CVE-2026-30040 is a medium-severity vulnerability rated 6.5/10 on the CVSS scale. 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..
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.
Metrics
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:L
Weakness Enumeration
References
Timeline
- Published
- Last Modified
- Status
- Deferred
Frequently Asked Questions
What is CVE-2026-30040?
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.
How severe is CVE-2026-30040?
CVE-2026-30040 has a CVSS score of 6.5/10 (MEDIUM severity).
How do I fix CVE-2026-30040?
Check the vendor references and advisories linked above for patched versions and mitigation guidance. You can also run a Strix scan to test if your systems are affected.
Are you affected by CVE-2026-30040?
Run a free Strix scan to check your systems for this vulnerability.
Scan your code nowSource: NVD / NIST